La dependencia del ejercicio físico en deportes de resistencia: relación con la regulación emocional y el afecto negativo / Dependence on physical exercise in endurance sports: relationship with emotional regulation and negative affect

El ejercicio físico en altos volúmenes y descontrolado puede generar dependencia psicológica y cambios en el estado de ánimo. La regulación emocional y el afecto negativo son procesos relevantes para el desarrollo de patrones adictivos. Este estudio analizó las diferencias en afecto negativo y regulación emocional en función del perfil de práctica del ejercicio físico; la relación entre la dependencia del ejercicio, la regulación emocional y el afecto negativo; y el papel mediador de la regulación emocional en dicha relación. Participaron 375 practicantes de deportes de resistencia. Las diferencias en los perfiles de práctica del ejercicio físico fueron significativas en todas las variables de estudio. La dependencia del ejercicio correlacionó de forma positiva y significativa con las dificultades de regulación emocional y con el afecto negativo. Las dificultades de regulación emocional fueron predictoras de la dependencia del ejercicio. Hubo un efecto de mediación de las dificultades de regulación emocional entre el afecto negativo y la dependencia del ejercicio. Mejorar las habilidades de regulación emocional podría prevenir la aparición de la dependencia del ejercicio.(AU)

The copious and uncontrolled practice of exercise can generate psychologicaldependence and mood changes. Emotional regulation and negative affectivity arerelevant processes for the development of addictive patterns. This study analysedthe differences in negative affectivity and emotional regulation based on thepractice profile of exercise; the relationship between exercise dependence,emotional regulation, and negative affectivity; and the mediating role of emotionalregulation in such relationship. 375 endurance sports practitioners participated.The differences in the physical exercise practice profiles were significant in all thestudy variables. Exercise dependence correlated positively and significantly withemotional regulation difficulties and with negative affectivity. Emotional regulationdifficulties were predictors of exercise dependence. There was a mediating effectof emotional regulation difficulties between negative affect and exercisedependence. Improving emotional regulation skills could prevent the onset ofexercise dependence.(AU)

Effects of different lower limb strengthening protocols on muscle activity, strength and power in sedentary and physically inactive subjects: a systematic review / Efectos de diferentes protocolos de fortalecimiento de miembro inferior sobre la fuerza, potencia y actividad muscular en sujetos sedentarios y físicamente inactivos: una revisión sistemática

The purpose of this systematic review was: a) to determine the quality of evidence from studies assessing the effects of different lower limb strengthening protocols on muscle activity, strength, and power in sedentary and/or physically inactive subjects; and b) to determine the effectiveness of lower extremity strengthening protocols on muscle activity, strength, and power in sedentary and/or physically inactive subjects. Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) statements were followed using keywords associated with strength training, lower limb, sedentary, and physical inactivity. Four databases were used: Medline via PubMed, Web of Science, Scopus and SPORTDiscus. Methodological quality was assessed using the PEDro scale. A total of 164 articles were retrieved, six included in this review. Four studies were classified as fair methodological quality, and two were considered of good methodological quality. Due to the heterogeneity in methodological aspects and the limited number of articles including the variables under study, it was not possible to establish a measure of effectiveness of lower limb strengthening protocols on muscle activity, strength, or power. In conclusion, strength training in the lower limb seems to improve the levels of strength, power, and muscular activity in sedentary subjects. However, due to the limited number of articles, methodological variability, and training methods used, it is necessary to conduct new studies that control these variables.(AU)

El propósito de esta revisión sistemática fue: a) determinar la calidad de la evidencia de los estudios que evaluaron los efectos de diferentesprotocolos de fortalecimiento de miembros inferiores sobre la actividad, la fuerza y la potencia muscular en sujetos sedentarios y/o físicamenteinactivos; y b) determinar la efectividad de los protocolos de fortalecimiento sobre la actividad, fuerza y potencia muscular de miembros infe-riores en sujetos sedentarios y/o físicamente inactivos. Se siguieron los criterios PRISMA (Preferred Reporting Items for Systematic Review andMeta-Analyse) utilizando palabras clave asociadas con el entrenamiento de fuerza, extremidades inferiores, sedentarismo e inactividad física. Serevisaron cuatro bases de datos: Medline vía PubMed, Web of Science, Scopus y SPORTDiscus. La calidad metodológica se evaluó mediante laescala PEDro. Se recuperaron 164 artículos en total, seis incluidos en esta revisión. Cuatro estudios se clasificaron como de calidad metodológicaregular y dos se consideraron de buena calidad metodológica.Debido a la heterogeneidad en los aspectos metodológicos y al escaso número de artículos que incluyeron las variables en estudio, no fue posibleestablecer una medida de efectividad de los protocolos de fortalecimiento de miembros inferiores sobre la actividad, la fuerza o la potenciamuscular. En conclusión, el entrenamiento de fuerza en el miembro inferior parece mejorar los niveles de fuerza, potencia y actividad muscular ensujetos sedentarios. No obstante, debido al número limitado de artículos, la variabilidad metodológica y los métodos de entrenamiento utilizados,es necesario realizar nuevos estudios que controlen estas variables.(AU)

Effects of resistance training on heat shock response (HSR), HSP70 expression, oxidative stress, inflammation, and metabolism in middle-aged people

Resistance training (RT) can increase the heat shock response (HSR) in the elderly. As middle-aged subjects already suffer physiological declines related to aging, it is hypothesized that RT may increase the HSR in these people. To assess the effects of resistance training on heat shock response, intra and extracellular HSP70, oxidative stress, inflammation, body composition, and metabolism in middle-aged subjects. Sixteen volunteers (40 – 59 years) were allocated to two groups: the trained group (n = 7), which performed 12 weeks of RT; and the physically inactive—control group (n = 9), which did not perform any type of exercise. The RT program consisted of 9 whole-body exercises (using standard gym equipment) and functional exercises, carried out 3 times/week. Before and after the intervention, body composition, muscle mass, strength, functional capacity, and blood sample measurements (lipid profile, glucose, insulin, oxidative damage, TNF-α, the HSR, HSP70 expression in leukocytes, and HSP72 in plasma) were performed. The HSR analysis demonstrated that this response is maintained at normal levels in middle-aged people and that RT did not cause any improvement. Also, RT increases muscle mass, strength, and functional capacity. Despite no additional changes of RT on the antioxidant defenses (catalase, glutathione peroxidase, and reductase) or inflammation, lipid peroxidation was diminished by RT (group x time interaction, p = 0.009), indicating that other antioxidant defenses may be improved after RT. HSR is preserved in middle-aged subjects without metabolic complications. In addition, RT reduces lipid peroxidation and can retard muscle mass and strength loss related to the aging process. (AU)

Effects of resistance training on heat shock response (HSR), HSP70 expression, oxidative stress, inflammation, and metabolism in middle-aged people

Resistance training (RT) can increase the heat shock response (HSR) in the elderly. As middle-aged subjects already suffer physiological declines related to aging, it is hypothesized that RT may increase the HSR in these people. To assess the effects of resistance training on heat shock response, intra and extracellular HSP70, oxidative stress, inflammation, body composition, and metabolism in middle-aged subjects. Sixteen volunteers (40 – 59 years) were allocated to two groups: the trained group (n = 7), which performed 12 weeks of RT; and the physically inactive—control group (n = 9), which did not perform any type of exercise. The RT program consisted of 9 whole-body exercises (using standard gym equipment) and functional exercises, carried out 3 times/week. Before and after the intervention, body composition, muscle mass, strength, functional capacity, and blood sample measurements (lipid profile, glucose, insulin, oxidative damage, TNF-α, the HSR, HSP70 expression in leukocytes, and HSP72 in plasma) were performed. The HSR analysis demonstrated that this response is maintained at normal levels in middle-aged people and that RT did not cause any improvement. Also, RT increases muscle mass, strength, and functional capacity. Despite no additional changes of RT on the antioxidant defenses (catalase, glutathione peroxidase, and reductase) or inflammation, lipid peroxidation was diminished by RT (group x time interaction, p = 0.009), indicating that other antioxidant defenses may be improved after RT. HSR is preserved in middle-aged subjects without metabolic complications. In addition, RT reduces lipid peroxidation and can retard muscle mass and strength loss related to the aging process. (AU)

Vibration training and quadriceps muscle strength in soccer players' knee joints

Objective: This paper discusses the effect of vibration training on the strength of knee flexion and extension muscle group of football players. Methods: This test was carried out in a local sports college from January 2021 to January 2022. Taking 22 football playersin the college as an example, the athletes were divided into experimental group and observation group by digital grouping method, with 11 people in each group. The observation group was trained with the conventional lower limb physical training method, but also on the equipment. In the process of the experiment, the researchers will focus on the analysis of vibration training on the knee flexion and extension muscle group of football players, and compare the data and effects of the two groups of athletes. The experiment lasted for eight weeks. Results:The data of the experimental group were better than those of the observation group. Vibration training had a significant effect on improving the muscle strength of knee flexion and extension muscle group of football players, P > 0.05. Conclusion:In this eight-week experiment, the vibration training program with 30Hz frequency and 2mm amplitude can significantly improve the muscle strength of knee flexion and extension muscles of college athletes. Compared with the traditional training method, the vibration training program has more advantages, mainly reflected in the tolerance of athletes. However, there is little difference between the method and the traditional training method in the athlete's explosive power, and no great advantage is seen (AU)

Effects of Muscle Strength Training in Prostate Cancer: A Systematic Review

Introduction: Prostate cancer is one of the most frequently diagnosed cancers in males. Treatment options cause a series of side effects that can lead to a deterioration in the physical and quality of life of patients, such as musculoskeletal changes, atrophy or muscle weakness, due to the testosterone suppression. Scientific evidence has shown that exercise mitigates the side effects induced by cancer treatment. This study aimed to analyse the effects of muscular strength work on the organism of patients with prostate cancer in the treatment phase. Material and Methods: PubMed, Scopus, SPORTDiscus, CINAHL, Medline, Web of Science and PEDro databases were searched in January 2022. The Medical Subject Headings “resistance training”, “prostatic neoplasms”, “strength training” and “prostate cancer” were used. Results: A total of 13 articles were analysed. In all of them, statistically significant changes were found in strength, physical performance, muscle mass and cardiovascular and respiratory health after the implementation of a strength exercise program. Other variables did not achieve the expected changes. Conclusions: A strength exercise program improves strength, physical performance, muscle mass and cardiovascular health in patients with prostate cancer. However, whether it improves other parameters, such as body fat, power, bone density and quality of life, is unclear (AU)

Impact of Resistance Training on Energy Intake and Appetite Regulation for Obese or Overweight Individuals: A Systematic Literature Review / Impacto del entrenamiento de resistencia en la ingesta de energía y la regulación del apetito en personas obesas o con sobrepeso: una revisión sistemática de la literatura

Individuals experiencing obesity or overweight conditions frequently encounter difficulties in managing their appetite. The sustained practice of resistance training over an extended duration presents a potential avenue for regulating appetite among this demographic. Despite the extensive examination of long-term resistance training in existing literature, a consensus on pertinent issues remains elusive, necessitating a comprehensive review. This paper aims to evaluate empirical studies examining alterations in energy intake and appetite among obese or overweight individuals engaging in prolonged resistance training regimens. Information was gathered from databases including EBSCOhost, Science Direct, PubMed, and Web of Science. Search queries were executed on Google Scholar and other sources, utilizing key terms pertinent to energy intake (or appetite), resistance training, and overweight (or obesity) for identifying relevant studies. A comprehensive evaluation of 38 full-text articles was conducted, resulting in the inclusion of eight articles in the review. The PEDro scale was utilized to assess bias and completeness risk, with no exclusion of any articles during this process. The impact of resistance training on energy intake in overweight or obese individuals was observed through sessions lasting 35–45 minutes conducted twice a week over a nine-month period. The exercise significantly influenced parameters such as energy intake, glucose levels, leptin concentrations, Homeostatic Model Assessment of Insulin Resistance (HOMA-IR), Neuropeptide Y (NPY), and adiponectin. However, no significant effects were noted on perceived fullness and hunger, ghrelin PP, or PYY. Resistance training has the potential to impact energy intake and appetite regulation in overweight or obese individuals. Further research is warranted, particularly in exploring its effects on female and adolescent populations, implementing a sample size calculation strategy, conducting comparisons across three intensities, and undertaking a comprehensive analysis of relevant variables.(AU)

Entrenamiento de la fuerza en niños y adolescentes: Una Revisión sistemática años 2018-2022 / Strength training in children and adolescents: A systematic review years 2018-2022

Con el pasar del tiempo y especialmente en los últimos años el entrenamiento de la fuerza en niños y adolescentes ha venido tomando fuerza, convirtiéndose en uno de los componentes más importantes en el desarrollo de las capacidades físicas y motrices. El objetivo es Identificar las tendencias más recientes en lo referente a la prescripción del entrenamiento de la fuerza en niños y adolescentes la metodología: se desarrollo una revisión sistemática en la que fueron analizados 648 artículos de los cuales sólo 10 fueron seleccionados dada su relevancia y relación con el tema, además dichos artículos fueron extraídos de las bases de datos: Google Académico, Redalyc, Dialnet, y Scielo. En los resultados se pudo identificar en la revisión, (N=11) investigaciones experimentales cuantitativas y (N=15) estudios de revisión (cualitativas), así como un total de (n=234) participantes de ambos sexos en las intervenciones experimentales y un total de (n=139) estudios consultados en los artículos de revisión sistemática. En las conclusiones se logró identificar que el entrenamiento con pesos libres, y peso corporal son la tendencia más usada a la hora de prescribir entrenamiento de la fuerza. Consigo, se destaca que son los métodos de entrenamiento con pesas y bandas elásticas los implementos más utilizados para llevar a cabo su realización. La frecuencia recomendada es de 2 a 3 días por semana. El volumen que se destaca es de 2 a 3 series y 6 a 15 repeticiones por ejercicio donde la intensidad que prevalece son los porcentajes del 60% al 85% por ciento de 1RM o una intensidad moderada en la escala del esfuerzo percibido (AU)

With the passing of time and especially in recent years, strength training in children and adolescents has been gaining strength, becoming one of the most important components in physical and motor development. The objective is to identify the most recent trends regarding the prescription of strength training in children and adolescents. The methodology: a systematic review was developed in which 648 articles were analyzed, of which only 10 were selected given their relevance and relationship. with the subject, in addition said articles were extracted from the databases: Google Scholar, Redalyc, Dialnet, and Scielo. In the results it was possible to identify in the review, (N=11) quantitative experimental investigations and (N=15) review studies (qualitative), as well as a total of (n=234) participants of both sexes in the experimental interruptions and a total of (n=139) studies consulted in the systematic review articles. In the conclusions it will be identified that training with free weights and body weight are the most used trend when prescribing strength training. With it, it stands out that the methods of training with weights and elastic bands are the most used implements to carry out their realization. The recommended frequency is 2 to 3 days per week weeks. The volume that stands out is 2 to 3 sets and 6 to 15 repetitions per exercise where the prevailing intensity is 60% to 85% percent of 1RM or moderate intensity on the perceived exertion scale (AU)

Efectos del Entrenamiento de Fuerza sobre el perfil lipídico en niños y adolescentes con sobrepeso y obesidad. Una revisión sistemática / Effects of Resistance Training on lipid profile in overweight and obese children and adolescents. A systematic review

El desarrollo de enfermedades cardiovasculares (ECV) ateroscleróticas comienza en edades tempranas y está influenciado por factores genéticos y ambientales. La literatura actual propone el entrenamiento de fuerza (EF) como un medio para reducir el riesgo de ECV y mejorar el perfil lipídico en niños y adolescentes con sobrepeso y obesidad. Con el objetivo de examinar los efectos de un programa de EF en este grupo de población, se realizó una revisión sistemática utilizando el protocolo PRISMA y se buscaron estudios en cinco bases de datos (Pubmed, Scopus, the Cochrane Library, Embase y Web of Science). Un total de 11 estudios cumplieron los criterios finales de inclusión. Los resultados de esta revisión indicaron que las intervenciones de EF supervisadas y realizadas al menos 3 días a la semana con una duración de 8 semanas, mejoraron significativamente los parámetros lipídicos del colesterol (CT) y las lipoproteínas de baja densidad (LDL). Los programas de EF pueden ser considerados como un tratamiento no farmacológico adecuado para mejorar el perfil lipídico y la salud cardiovascular de niños y adolescentes con sobrepeso y obesidad (AU)

The development of atherosclerotic cardiovascular disease (CVD) begins early in life and is influenced by genetic and environmental factors. Resistance training (RT) is proposed as a means to reduce CVD risk and improve lipid profile in overweight and obese children and adolescents. In order to examine the effects of an RT programme in this population group, a systematic review was conducted using the PRISMA and protocol and using a total of five databases (Pubmed, Scopus, the Cochrane Library, Embase and Web of Science). A total of 11 studies met the final inclusion criteria. The results of these studies indicated that supervised PE interventions performed at least 3 days per week with lasting 8 weeks significantly improved lipid parameters of cholesterol (TC) and low-density lipoprotein (LDL). Consequently, it was concluded that RT programmes can be considered as a suitable non-pharmacological treatment to improve the lipid profile and cardiovascular health of overweight and obese children and adolescents (AU)

Influence of Functional Training on Special Technical Movement Ability and Athletic Performance of Male Basketball Players / Influencia del entrenamiento funcional en la capacidad de movimientos técnicos especiales y el rendimiento atlético de jugadores de baloncesto masculinos

Functional training, since Beijing Olympic Games, from field of medical rehabilitation to field of competitive sports, advanced scientific training concepts and training methods have gradually been recognized by domestic competitive sports workers and coaches. Therefore, functional training should be developed to grass-roots team to lay a solid foundation for sustainable development of competitive sports in our country. In this paper, a complete set of functional physical training program is designed by using methods of literature, expert interviews, experiments, mathematical statistics, and logical analysis. Finally, it is found that functional training can improve physical coordination of men's basketball. And symmetry, flexibility of athletes' ankle joints, thoracic spine, shoulder joints and stability of knee joints and cores have been improved, reducing probability of sports injuries, providing a theoretical basis for innovative scientific training of male basketball players in my country.(AU)

Effect Analysis of Functional Physical Fitness Training in Youth Amateur Track and Field Training Based on Improved Genetic Algorithm Under Functional Analysis / Análisis del efecto del entrenamiento de aptitud física funcional en el entrenamiento de atletismo de aficionados jóvenes basado en un algoritmo genético mejorado bajo análisis funcional

Athletics is in the basic position in sports, the improvement of sports quality, sports technology mastery is inseparable from athletics training, athletics training is an important way to improve the level of sports. China's amateur track and field training has played a major channel and role in the basic training of track and field, which has experienced nearly 50 years of development and achieved some excellent results, but it is not ideal. The economic development in the society has a great impact on the basic training of track and field, and only by solving the problems in the basic training of track and field well can we really improve the level of track and field in China. Youth amateur track and field training not only stimulates athletes' interest in sports and mastering track and field skills, but also lays the foundation for athletes' sports through physical training. At present, the physical training of our youth is not ideal. With the help of amateur training in track and field, it will bring continuous optimization to the athletes' physical training effect. To strengthen the attention and analysis of the basic and special strategies of physical fitness training in youth athletics amateur training, guide the development of the most reasonable physical fitness training plan and select the most suitable physical fitness training methods, so as to achieve the stable improvement of athletes' physical fitness and achieve the ideal goal of physical fitness training. Therefore, this paper introduces scientific quantitative and customized indexes into athletic training from the perspective of genetic algorithm, so as to improve the scientific and cutting-edge analysis of training effects.(AU)

Characteristics of the metabolically unhealthy phenotype in menopausal resistance training practitioners / Características del fenotipo metabólicamente no saludable en practicantes de entrenamiento deresistencia en la menopausia

Objective: to evaluate clinical, metabolic and body characteristics related to the metabolically unhealthy phenotype (MUH) in menopausal womenwho practice resistance training (RT).Methods: cross-sectional study with a sample of 31 women. Clinical and metabolic variables were measured. Body adiposity was assessedby body mass index, waist circumference, visceral adiposity index (VAI) and lipid accumulation product (LAP). Body composition analysis wasperformed by DEXA.Results: the prevalence of the MH phenotype was 74.2 %. Metabolically healthy (MH) women were younger, had more years of RT practice,higher HDL-c levels and lower VAI and android/gynoid ratio (A/G) than the MUH women. Women with inadequacy of HDL-c, TG, A/G and VAI had12.50 (95 % CI: 3.30-47.23), 4.83 (95 % CI: 2.37-9.85), 5.20 (95 % CI: 1.90-14.16) and 3.12 (95 % CI: 1.07-9.04) times greater prevalenceof the MUH phenotype, respectively, than those with adequacy of these parameters. Binary logistic regression analysis demonstrated that age isa predictor of the MUH phenotype (OR = 1.254; 95 % CI: 1.00-1.56) and this variable showed correlation with TG, VAI and A/G. There was noassociation between thyrotropin and MUH phenotype in the present sample.Conclusion: age and visceral adiposity are predictors for the MUH phenotype in RT practitioners in menopause, which may initially be characterized by alterations in serum lipid profile. (AU)

Objetivo: evaluar las características clínicas, metabólicas y corporales relacionadas con el fenotipo metabólicamente no saludable (MNS) enmujeres menopáusicas que practican entrenamiento de resistencia (ER).Métodos: estudio transversal con 31 mujeres. Se midieron variables clínicas y metabólicas. La adiposidad corporal se evaluó mediante el índicede masa corporal, la circunferencia de la cintura, el índice de adiposidad visceral (IAV) y el producto de acumulación de lípidos (PAL). El análisisde composición corporal fue realizado por DEXA.Resultados: la prevalencia del fenotipo metabólicamente saludable (MS) fue del 74,2 %. Las mujeres metabólicamente saludables (MS) eranmás jóvenes, tenían más años de práctica de ER, niveles más altos de HDL-c y menor IAV y relación androide/ginoide (A/G) que las mujeresMNS. Hubo asociación del fenotipo MNS con los niveles de HDL-c y A/G. Las mujeres con insuficiencia de HDL-c, TG, A/G y IAV tuvieron 12,50(IC 95 %: 3,30-47,23), 4,83 (IC 95 %: 2,37-9,85), 5,20 (IC 95 %: 1,90-14,16) y 3,12 (IC 95 %: 1,07-9,04) veces mayor prevalencia del fenotipoMNS, respectivamente, que aquellas con adecuación de estos parámetros. El análisis de regresión logística binaria demostró que la edad es unpredictor del fenotipo MUH (OR = 1,254; IC 95 %: 1,00-1,56) y esta variable mostró correlación con TG, VAI and A/G. No hubo asociación entrela tirotropina y el fenotipo MUH en la presente muestra.Conclusión: la edad y la adiposidad visceral son predictores del fenotipo MUH en practicantes de ER en la menopausia, que puede caracterizarseinicialmente alteraciones en el perfil plasmático de insípidos. (AU)

A Study of the Training Load of Chinese Men Cross-Country Skiers in the Winter Olympic / Un estudio de la carga de entrenamiento de los esquiadores de fondo chinos en los Juegos Olímpicos de Invierno

This study examines the training load and performance of Chinese male cross-country skiers in preparation for the 2022 Winter Olympics. The research aims to establish a solid foundation for organising training loads and managing competitive readiness in Chinese cross-country skiing competitions. The study used quantitative data from four Chinese male athletes during the preparation period for the Beijing Winter Olympic Games in 2021. The Garmin 945 heart rate monitor was used to observe and document the training load, including factors such as training content, duration, distance, intensity level, and timing. The index test method was employed to assess the athletes' blood index at biweekly intervals. The Chinese skiers underwent a general preparation period that lasted 164 days, a special preparation period that lasted 70 days, and a pre-competition period that lasted 26 days. The overall training volume exceeded that of world-class athletes, with a notable emphasis on terrestrial training. The prevalence of endurance training was lower in comparison to world-class athletes, with a greater emphasis on strength training. The training intensity exhibited a modest increase, with a distribution pattern of low, medium, and high levels of intensity. The frequency of training and land training declined from the general preparation period to the pre-competition period, while the frequency of snow training increased. The intensity of the competition arrangement during the special preparation period was heightened.(AU)

Effect of Instability Resistance Training on Sports Performance Among Athletes: A Systematic Review / Efecto del entrenamiento de resistencia a la inestabilidad sobre el rendimiento deportivo de los atletas: una revisión sistemática

The aim of this investigation is to systematically review the impact of instability resistance training (IRT) on sports performance, providing both theoretical and practical insights for athletes in routine training. Adhering to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, databases such as Web of Science, EBSCOhost (SPORTDiscus), PubMed, and Scopus were employed for the comprehensive collection of original references. A total of 402 articles were gathered, with only 17 meeting the specified analytical criteria. The quality of each article was assessed using the PEDro scale, resulting in scores ranging from 2 to 6 across the 17 articles. IRT exhibited significant efficacy in enhancing sports and athletic performance across disciplines such as Judo, cricket, weightlifting, rifle shooting, sprinting, handball, soccer, and basketball, with the exception of 25 male elite golf players. Theoretically, this study posits that IRT, rooted in functional training, represents an advancement in activating core muscles, fostering coordination between agonistic and antagonistic muscles, and enhancing muscle proprioception – pivotal physiological foundations for augmenting exercise performance. Moreover, by emphasizing the integration of training actions and the role of the "power chain," IRT, adopting an unstable format akin to specialized exercises or increasing difficulty, aims to enhance training efficiency. Empirical evidence demonstrates that continuous IRT positively influences sports performance, with moderate IRT identified as a secure and effective stimulation method. Consequently, this review advocates for the incorporation of IRT into athletes' daily training routines to optimize sports performance.(AU)

Impact of Cardiovascular-Respiratory Parameters on High-Intensity Football Training / Impacto de los parámetros cardiovasculares-respiratorios en el entrenamiento de fútbol de alta intensidad

The efficacy of soccer players is influenced by morphological, functional, and psychological characteristics that define the optimal playing style and game outcomes. It is generally accepted that soccer is a prolonged, high-intensity, intermittent sport where players must sprint repeatedly and frequently throughout a 90-minute match. The average intensity of their exercise is between 80 and 90 percent of their maximum heart rate or anaerobic threshold. This innovative study aims to determine how high-intensity football affects cardiovascular and pulmonary characteristics. The data for this study are collected using a Likert scale from university soccer players. The research revealed that cardiovascular and respiratory parameters significantly influence high-intensity football training. This study is innovative due to its research concept and substantial implications for theory and practice. The prospective directions of this research are also essential for critically advancing the body of knowledge.(AU)

Respuestas autonómicas y análisis de la carga interna mediante la evaluación aguda de la variabilidad de la frecuencia cardíaca tras una sesión de entrenamiento funcional de alta intensidad / Autonomic responses and internal load analysis through acute assessment of heart rate variability after a high-intensity functional training session

Backgroud: Heart rate variability (HRV) measurement is an important tool that may help indicate possible physiological changes, and HRV monitorization could be a great strategy for clinical analysis (autonomic control) and performance (internal load).Objective: The aim of the present study was to evaluate autonomic responses and internal load through HRV during a higintensity functional training (HIFT) session.Material and method: Thirty-three individuals (22 men and 11 women) participated in the study (Age: Mean = 34.9 ± 7.2years; Weight: Mean = 72.3 ± 13.7 kg; Height: Mean = 1.72 ± 0.1 m; BMI: Mean = 24.4 ± 3.0 kg/m²). All participants engaged ina 60-to-90-minute HIFT session. HRV analysis was performed during the specific warm-up period (targeted warm-up or skilltraining that followed the general mobility and light cardiovascular warm-up), during exercise (approximately 50 minutes),and in the recovery phase (10 minutes post-training). A Polar H10 heart rate monitor chest strap (Kempele, Finland®) wasused to collect HRV and was connected to the Elite HRV mobile application. The data were further transferred to Kubios HRVStandart software, version 3.3.1, in order to process the acquired data.Results: For isolated analyzes (pre- and post-), differences were found for SDNN (P<0.001), RMSSD (P<0.001) and HF(P=0.041), yet not for LF / HF (P=0.483). In the analysis of HRV kinetics, significant results were found between momentsfor RR, SDNN, RMSSD, LF and HF (P<0.05). In the analysis of the internal load, the highest level of stress was identified in 40(P=0.010) and 50 minutes of exercise (P=0.001), as well as in recovery (P<0.001), this assessment being carried out throughHRV through the LnRMSSD index. A negative correlation was observed between maximum heart rate (HRmax) and LnRMSSDat 40 (r=-0.51) and 50 minutes of exercise (r=-0.58). In recovery, the correlation was positive, yet insignificant (r=0.032)...(AU)

Introducción: La medición de la variabilidad de la frecuencia cardiaca (HRV) es una herramienta importante que puedeayudar a indicar posibles cambios fisiológicos. La monitorización de la HRV podría ser una gran estrategia para el análisisclínico (control autonómico) y el rendimiento (carga interna).Objetivo: El objetivo del presente estudio fue evaluar las respuestas autonómicas y la carga interna a través de la VFC duranteuna sesión de entrenamiento funcional de alta intensidad (HIFT).Material y método: Treinta y tres individuos (22 hombres y 11 mujeres) participaron en el estudio (Edad: Media = 34,9 ±7,2 años; Peso: Media = 72,3 ± 13,7 kg; Altura: Media = 1,72 ± 0,1 m; IMC: Media = 24,4 ± 3,0 kg / m²). Todos los participantesparticiparon en una sesión HIFT de 60 a 90 minutos. El análisis de la VFC se realizó durante el periodo de calentamiento específico (calentamiento dirigido o entrenamiento de habilidades que seguía al calentamiento cardiovascular ligero y demovilidad general), durante el ejercicio (aproximadamente 50 minutos) y en la fase de recuperación (10 minutos despuésdel entrenamiento). Se utilizó una banda de pecho con pulsómetro Polar H10 (Kempele, Finlandia®) para recoger la VFC y seconectó a la aplicación móvil Elite HRV. Los datos se transfirieron posteriormente al software Kubios HRV Standart, versión3.3.1, para procesar los datos adquiridos.Resultados: En los análisis aislados (pre y post), se encontraron diferencias para SDNN (p <0,001), RMSSD (p <0,001) y HF(p = 0,041), pero no para LF / HF (p = 0,483). En el análisis de la cinética de la VFC, se encontraron resultados significativos entremomentos para RR, SDNN, RMSSD, LF y HF (p <0,05). En el análisis de la carga interna, el mayor nivel de estrés se identificóen 40 (p = 0,010) y 50 minutos de ejercicio (p = 0,001), así como en la recuperación (p <0,001), realizándose esta valoración...(AU)

Efectos de un programa de entrenamiento de fuerza máxima en nadadores de competición: una revisión sistemática / Effects of a maximum strength training programme on competitive swimmers: a systematic review

Introducción: Los programas de entrenamiento de fuerza máxima han sido utilizados tradicionalmente en la planificación ennatación, principalmente como un trabajo complementario. Aunque existen pruebas de la utilidad que puede evidenciar estetipo de preparación física, aún no queda claro cómo un programa de entrenamiento de fuerza máxima afecta a las diferentesvariables del rendimiento en nadadores.Objetivo: El objetivo de esta revisión sistemática fue realizar una revisión de la literatura sobre los efectos de un programaentrenamiento de fuerza máxima sobre las variables asociadas al rendimiento en natación (velocidad de nado, frecuencia debrazada, longitud de brazada, virajes y tiempo de reacción) en nadadores de competición.Material y método: La búsqueda fue realizada hasta febrero de 2022 en distintas bases de datos (Web of Science, Pubmedy Scopus). Criterios de inclusión: 1) Estudios que analizaran parámetros de rendimiento en natación; 2) intervenciones conprogramas de entrenamiento de fuerza máxima (≥85% RM) de al menos cuatro semanas de duración; 3) sujetos con nivelcompetitivo nacional o superior; 4) sujetos cuatro años de experiencia competitiva en natación y diez horas de entrenamientosemanales; y 5) artículos en los que se comparan los efectos del entrenamiento de fuerza máxima en el rendimiento en natación.Resultados: Un total de 8 estudios cumplieron los criterios de inclusión. Ocho de los estudios analizaron efectos en lavelocidad de nado, cinco efectos en la frecuencia de brazada, cinco en la longitud de brazada, tres en la reacción de saliday dos en los virajes.Conclusión: Un programa de entrenamiento de fuerza máxima tiene un efecto positivo sobre la velocidad de nado. De igualmanera puede afectar variables cinemáticas como la longitud de brazada, por otro lado, no se observan en la frecuencia debrazada.(AU)

Introduction: Maximal strength training programs have been traditionally used in swimming planning, mainly as a comple-mentary dry-land workout. Although there is evidence of the utility of this type of physical preparation, it is still unclear howa maximal strength training program affects different performance variables in swimmers.Objective: The objective of this systematic review was to conduct a literature review on the effects of a maximal strengthtraining program on the variables associated with swimming performance (swimming speed, stroke frequency, stroke length,turns and reaction time) in competitive swimmers.Material and method: The primary search was performed until February 2022 in different databases (Web of Science, Pub-med and Scopus). Inclusion criteria: 1) studies analyzing swimming performance parameters; 2) interventions with maximalstrength training programs (≥85% RM) of at least four weeks duration; 3) subjects with national competitive level or higher; 4)subjects with at least four years of competitive swimming experience and ten hours of training per week; and 5) investigationscomparing the effects of maximal strength training on swimming performance.Results: A total of eight studies met the inclusion criteria. Eight of the studies examined effects on swim speed, five effectson stroke frequency, five on stroke length, three on start reaction, and two on turns.Conclusion: A maximal strength training program has a positive effect on swimming speed. Likewise, they significantlyincrease kinematic variables such as stroke length. However, no evidences of significant stroke frequency modification havebeen identified.(AU)

Seguridad y eficacia del Método Pilates sobre el dolor físico, funcional y musculoesquelético en mujeres mayores / Safety and efficacy of the Pilates Method on physical, functional and musculoskeletal pain in older women

El Método Pilates (MP) se propone como una estrategia no farmacológica para el manejo del dolor. Sin embargo, se sabe poco sobre la seguridad del método aplicado a los ancianos. El objetivo fue identificar el impacto de la MP en mujeres ancianas sin quejas de dolor musculoesquelético severo general y específico, considerando el dolor musculoesquelético físico, funcional y crónico. 19 ancianas se sometieron a 24 semanas de intervención con MP. Medimos la percepción de funcionalidad, dolor general y segmentación respectivamente por tres subescalas del SF-36 (capacidad funcional, aspectos físicos y dolor) y el Cuestionario Nórdico Musculoesquelético (NMQ). Para SF-36 tuvimos: capacidad funcional χ 2 (2) = 1.529, p = 0.465, limitaciones por aspectos físicos χ 2 (2) = 1.960, p = 0.375 y dolor χ 2 (2) = 1.213, p = 0.545 , no se encontraron diferencias significativas para ninguna de las variables a lo largo del tiempo. En cuanto al NMQ, observamos una diferencia significativa solo para la cadera / muslo, disminuyendo las quejas de dolor, hormigueo y entumecimiento en Q2 en comparación con Q1 (p = 0.01) y aumentando en Q3 en comparación con Q2 (p = 0.03). Se sugiere que el MP es seguro y aplicable en este público, ya que presentó resultados estables y no agravó la condición de dolor (general y localizado). (AU)

Study On the Influence of Training Methods on Track and Field Athletes’ Performance / Estudio sobre la influencia de los métodos de entrenamiento en el rendimiento de los atletas de atletismo

The study undertakes a thorough review of the variables impacting the track and field athletes' unsatisfactory performance in an effort to improve their performance. It looks into how track and field athletes' training methods affect their physical performance. It also comes up with a way to measure their training progress and makes it easier to figure out how different factors affect their overall performance. Then, experiments are done to make sure that these results are true. This study also looks at the exact methods and approaches that track and field athletes use to train and improve their ability. The relationship between different training techniques and the performance outcomes in field events including the long jump, high jump, shot put, and javelin throw is carefully examined. This study tries to pinpoint the most efficient methods for realizing athletes' potential by examining the effects of various training strategies on their physical prowess, technique mastery, and overall performance. The suggested evaluation model is a useful tool for evaluating how well athletes' training programs are working. It considers a number of performance characteristics, such as technique precision, mental agility, strength, and endurance. Coaches and trainers can create training plans that are specific to each athlete's demands by a methodical analysis of these aspects, enhancing the way they perform on the field.(AU)

Programas de fuerza en la arquitectura muscular del cuádriceps femoral: revisión sistemática / Strength programs in the muscular architecture of the quadriceps femoris: A systematic review

Introducción y objetivo: La arquitectura muscular es la disposición de los elementos contráctiles del músculo definidos como longitud del fascículo (LF), ángulo de peneación (AP), grosor muscular (GM) y área de sección transversal (ASTA). Estas se ven alteradas por las lesiones siendo en el cuádriceps uno de los grupos musculares con mayor incidencia. Por tanto, la exploración de las variables que influyen en dicha circunstancia constituye una labor relevante. El objetivo fue el de evaluar cómo afectan los entrenamientos de fuerza y de fuerza resistencia en la arquitectura muscular del cuádriceps femoral. Métodos Se llevó a cabo una búsqueda sistemática sin limitación temporal, desde el 2007 hasta diciembre de 2019, en las bases de datos Medline, Sport discus, Cinahl y Scopus, obteniendo 13 ensayos clínicos después de aplicar los criterios de selección. Resultados Los resultados muestran una elevada heterogeneidad en los programas y metodologías de intervención, pero se observa que la arquitectura muscular se modifica tras un programa de fuerza, sobre todo en aquellos que utilizan métodos excéntricos (AP Recto femoral: [Pre] 12,44 ± 2,98 / [Post] 13,82 ± 3,8; GM Recto femoral [Pre] 2,1 ± 0,19 / [Post] 2,28 ± 0,31; LF Vasto Lateral [Pre] 7,82 ± 1,88 / [Post] 8,57 ± 1,14; ASTA Recto femoral [Pre] 9,21 ± 1,86 / [Post] 10,02 ± 1,98), que más frecuentemente obtienen cambios significativos y en todos los elementos arquitectónicos, e isométricos que han demostrado cambios en todos los vientres musculares del cuádriceps estudiados. Conclusión Los programas de fuerza afectan a la arquitectura muscular, sobre todo aquellos basados en ejercicios excéntricos e isométricos (AU)

Introduction and aim: Muscle architecture is the arrangement of the contractile elements of the muscle defined as fascicle length (FL), penneatión angle (PA), muscle thickness (MT) and cross-sectional area (CSA). These are altered by injuries, being the quadriceps one of the muscle groups with the highest incidence. Therefore, the exploration of the variables that influence this circumstance constitutes a relevant task. The objective was to evaluate how strength and endurance training affect the muscle architecture of the quadriceps femoris. Methods A systematic search was carried out without time limitation, where they are included from 2007 to December 2019, in the databases Medline, Sport discus, Cinahl and Scopus obtaining 13 clinical trials after applying the selection criteria. Results The results show a high heterogeneity in the programs and methodologies of intervention, but observes that the muscular architecture sees modified after a program of strength, especially in those that use eccentric methods (PA Rectus femoris [Before] 12.44 ± 2.98/[After] 13.82 ± 3.8; MT Rectus femoris [Before] 2.1 ± 0.19/[After] 2.28 ± 0.31; FL Vastus lateralis [Before] 7.82 ± 1.88/[After] 8.57 ± 1.14; CSA Rectus femoris [Before] 9.21 ± 1.86/[After] 10.02 ± 1.98), that more frequently obtain significant changes in all architectural elements, and isometric that have showed changes in all quadriceps muscles studied. Conclusion Strength programs affect muscular architecture, especially those based on eccentric and isometric exercises (AU)