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1.
J Hum Kinet ; 80: 61-69, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-34868417

RESUMEN

The phenomena of target kinematic effects under different striking conditions and applying different techniques constitute one of the fields of research for sports biomechanics. However, the influence of some kinematic variables which change under different strike conditions for specific parts of the lower limb remains unknown. The aim of this study was to extend the knowledge on how targets of different shapes or the lack of a physical target would affect maximal velocity registered by a marker placed on the foot, knee and hip during the execution of a roundhouse kick. In total, 15 adult males were included in this study. All participants were taekwon-do elite athletes. The displacement of markers placed on the lateral side of the foot, knee and hip during movement execution was registered by a stereophotogrammetry apparatus. Participants performed taekwon-do roundhouse kicks for three target types (into the air, a table tennis ball and a training shield) applying either a sport or a traditional style. The highest maximal velocity was obtained for kicking into the training shield. When applying the sport style, the highest maximal velocity of foot markers for the executed kicks was registered. Kicking into air resulted in higher velocities for proximal body parts than kicking into a tennis ball, but the effect was reversed for the foot marker. In conclusion, a large resistance target is suitable for athletes' motor preparation as it allows the highest maximum velocity to be reached. Small non-resistant targets are recommended for technical training.

2.
Artículo en Inglés | MEDLINE | ID: mdl-34639517

RESUMEN

Apathy, a feeling of indifference or a general lack of interest and motivation to engage in activity, is one of the most common neuropsychiatric symptoms in Parkinson's disease (PD). The large variation in prevalence and the underlying pathophysiological processes remain unclear due to heterogeneous PD populations. The purpose of this study was to identify risk factors for apathy, the modification or treatment of which may be clinically relevant and improve quality of life and caregiver burden for patients with Parkinson's disease. Caucasian subjects with Parkinson's disease were included in the study. Baseline demographics, neurological deficit, medications taken, cognitive and neuropsychiatric status, and the polymorphisms in the brain-derived neurotrophic factor gene were assessed. Apathy was diagnosed in 53 (50.5%) patients. They were less educated (OR 0.76 CI 0.64-0.89; p = 0.001), more frequently depressed (OR 1.08 CI 1.01-1.15; p = 0.018), and less frequently treated with inhibitors of monoamine oxidase-B (MAOB-I) (OR 0.07 CI 0.01-0.69; p = 0.023). Although apathetic patients were more likely to carry the Met/Met genotype, differences in the brain-derived neurotrophic factor BDNF rs6265 polymorphism between apathetic and non-apathetic PD patients were not statistically significant in multivariate analysis. Some risk factors for apathy may be clinically modifiable. Further studies are needed to assess whether modeling modifiable apathy risk factors will affect the prevalence of this neuropsychiatric symptom in patients with Parkinson's disease.


Asunto(s)
Apatía , Enfermedad de Parkinson , Humanos , Enfermedad de Parkinson/tratamiento farmacológico , Enfermedad de Parkinson/epidemiología , Polonia/epidemiología , Calidad de Vida , Factores de Riesgo
3.
Exp Gerontol ; 151: 111421, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-34051286

RESUMEN

Parkinson's disease (PD) is worth special attention among all the diseases and disorders of the nervous system, since its effects impact the capability of undertaking physical activity. The aim of the study was to analyze the use of the Senior Fitness Test (SFT) in determining the influence of physical rehabilitation on the level of physical fitness, and to assess the correlation between SFT and the Movement Disorder Society-sponsored revision of the Unified Parkinson's Disease Rating Scale (MDS-UPDRS) in patients with PD both participating and not participating in physical rehabilitation. The study was conducted in a group of 69 people (age 63.86 ± 5.43 y), with diagnosed idiopathic PD in 2nd stage in the Hoehn and Yahr scale (duration 6.52 ± 5.72 y). To determine the level of mobility of the subjects, the SFT and parts II, III, and IV of the MDS-UPDRS were used. Subjects were divided into participants (A) and non-participants (B) in physical rehabilitation. Correlation coefficients between the MDS-UPDRS and SFT were calculated after the 6-month study period. Participation in the process of physical rehabilitation significantly improved the physical fitness of the exercisers. A strong correlation was observed between the results obtained in the SFT and the assessment obtained on the basis of the MDS-UPDRS scale. It has been found that the SFT is a sensitive diagnostic tool in assessing the physical fitness of people with PD.


Asunto(s)
Enfermedad de Parkinson , Anciano , Ejercicio Físico , Humanos , Pruebas de Estado Mental y Demencia , Enfermedad de Parkinson/diagnóstico , Aptitud Física , Índice de Severidad de la Enfermedad
4.
Risk Manag Healthc Policy ; 13: 1553-1562, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32982513

RESUMEN

INTRODUCTION: Nonpharmacological interventions in the elderly may lead to the reduction of cognitive and depressive symptoms. The aim of the study was to evaluate changes in cognitive functions and mood in older adults participating in therapy, conducted in the community day-care center (CD-CC). PATIENTS AND METHODS: The study group (SG) included 46 elderly adults (21 M, 25 W), the control group (CG) included 45 adults (12 M, 33 W), who participated in the activities of the University of the Third Age. The following measuring tools were used: Mini-Mental State Examination, Clock-Drawing Test, Verbal Fluency Test, Digit Span Test, Stroop Color and Word Test, Beck's Depression Inventory, and Hospital Anxiety and Depression Scale. The intervention consisted of CD-CC 6-month nonpharmacological therapy. RESULTS: In the SG, compared to the CG, the scores on all the cognitive tests were significantly lower, Beck's Depression Inventory was significantly higher. After intervention, the SG and the CG did not show substantial differences in their scores on the Mini-Mental State Examination, Clock-Drawing Test, and Beck's Depression Inventory. In the SG, a significant improvement was reported on the Verbal Fluency Test, Beck's Depression Inventory and Hospital Anxiety and Depression Scale scores. CONCLUSION: The CD-CC complex therapy can be helpful for cognitive and emotional elderly functioning.

5.
Artículo en Inglés | MEDLINE | ID: mdl-32831878

RESUMEN

In recent years, allopathy (ALP) and naturopathy (NAP) have become a favorite topic, source of argument, and the subject discussed when it comes to choosing treatment modality. Various attempts have been made to elucidate this issue, yet limited advancement has been achieved. To this day, the dispute remains active, and the debate over what to do about it continues to damnify us. The presented qualitative analysis aims to identify existing views or else expand on or uncover already known differences. Ourexamination or position is not about the conflict, finding a superior method (ALP vs. NAP), but aims at inductive reasoning, making broader generalizations from scientific observations. Subjects and Methods. We explore the philosophical and psychological foundation of the prevailing ideologies and perspectives in the contemporary society using the Straussian grounded theory approach. The study had no subjects. Results. We outline the path for the future direction. Conclusion. Our examination concludes that it is essential to acknowledge not only the difference between ALP and NAP but also how they both act on our health. We emphasize that, by identifying our perspective, our inner reflection, and our view on this topic, we can undertake a new paradigm, new road to improve our health, and perhaps the well-being throughout our culture and society.

6.
J Clin Med ; 9(5)2020 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-32369962

RESUMEN

Physical activity (PA) is a factor that may have an influence on the symptoms of Parkinson's disease (PD). The aim of this study was to identify the potential determinants of spontaneous PA in a PD patient group. A total of 134 PD patients aged 65.2 ± 9.2 years with a Hoehn-Yahr scale score ≤4 and a Mini Mental State Examination (MMSE) score ≥24 were examined. For the study's purposes, the authors analyzed age, sex, education, history of PD, dopaminergic treatment, the severity of PD symptoms using Unified Parkinson's Disease Rating Scale (UPDRS), and Hoehn-Yahr scale. Additionally, all participants were evaluated through a set of scales for specific neuropsychiatric symptoms including depression, anxiety, apathy, fatigue, and sleep disorders. A linear regression analysis was used with backward elimination. In the total explanatory model, for 12% of the variability in activity (R2 = 0.125; F(16.133) = 2.185; p < 0.01), the significant predictor was starting therapy with the dopamine agonist (DA) (ß= 0.420; t= 4.068; p = 0.000), which was associated with a longer duration of moderate PA. In the total explanatory model, for more than 13% of the variance in time spent sitting (R2 = 0.135; F(16.130) = 2.267; p < 0.01), the significant predictors were secondary education and the results of the UPDRS. The patients with secondary and vocational education, those starting treatment with DA and those with a less severe degree of Parkinson's symptoms (UPDRS), spent less time sitting in a day. It is possible to identify determinants of spontaneous PA. It may elucidate consequences in terms of influence on modifiable conditions of PA and the proper approach to patients with unmodifiable PA factors.

7.
Eur J Sport Sci ; 18(3): 415-422, 2018 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-29355091

RESUMEN

OBJECTIVE: The aim of this study was to evaluate the association between meeting recommendations on physical activity for health in leisure-time and the ability to work among Polish white-collar workers. METHODS: The study used a cross-sectional design with a convenience sample of 360 white-collar workers. Participants recorded 7-day physical activity logs, including form, duration and intensity of leisure-time physical activities. The results were compared to health recommendations. A standardized Work Ability Index (WAI) questionnaire was used in assessing the ability to work. RESULTS: Participants who met health recommendations achieved higher scores of the WAI (mean score = 41.93) in comparison to those who were not sufficiently physically active (mean score = 39.35) (p < .001). The results of binary logistic regression show that meeting health-related physical activity recommendations almost double the odds of reaching at least good work ability (OR = 1.94, 95% CI = 1.12-3.36). CONCLUSIONS: Meeting leisure-time physical activity recommendations (especially the criterion of vigorous physical activity) is significantly related to higher self-assessed ability to work among white-collar workers.


Asunto(s)
Ejercicio Físico , Ocupaciones , Evaluación de Capacidad de Trabajo , Trabajo , Adulto , Estudios Transversales , Femenino , Humanos , Actividades Recreativas , Masculino , Persona de Mediana Edad , Polonia , Encuestas y Cuestionarios
8.
Ann Agric Environ Med ; 24(4): 632-635, 2017 Dec 23.
Artículo en Inglés | MEDLINE | ID: mdl-29284238

RESUMEN

INTRODUCTION AND OBJECTIVE: Physical activity is an important factor in maintaining the health and functional fitness of elderly people. The aim of the study was to determine the number of senior women meeting the physical activity guidelines, and their level of functional fitness in comparison to women who are not sufficiently physically active. MATERIAL AND METHODS: The study involved 61 women, aged 60-75. Physical activity was monitored on seven consecutive days of the week, using a triaxial accelerometer ActiGraph GT3X. Results of the assessment of physical activity were verified against the Global Recommendations of Physical Activity for Health. The Senior Fitness Test (Fullerton Test) was used to evaluate functional fitness. RESULTS: In the studied group, 36.1% achieved the recommended level of physical activity. All those examined mainly undertook physical activity of low intensity. Vigorous physical activity during the week was noted in only 6 seniors. Women who met the recommendations of physical activity achieved significantly better results in test trials, e.g. Chair Stands, Up and Go, Six Minute Step Test. CONCLUSIONS: Adherence to physical activity guidelines was associated with better functional fitness of older women. However, less than half of the examined seniors met the Global Recommendations on Physical Activity for Health.


Asunto(s)
Envejecimiento/fisiología , Envejecimiento/psicología , Ejercicio Físico , Mujeres/psicología , Anciano , Femenino , Humanos , Persona de Mediana Edad , Actividad Motora , Cooperación del Paciente , Aptitud Física
9.
Med Pr ; 68(6): 725-734, 2017 Oct 17.
Artículo en Polaco | MEDLINE | ID: mdl-28745728

RESUMEN

BACKGROUND: Of many diseases and disorders of the nervous system Parkinson's disease (PD) deserves a particular attention for its specific effects having an impact on the ability to undertake different forms of professional and economic activities. Due to the constantly growing incidence rate and the lowering age of patients, PD is becoming more and more serious social problem. The aim of this study was to determine the effects of professional work and physiotherapy on the quality of live in people with Parkinson's disease. MATERIAL AND METHODS: The research was carried out on 109 people with diagnosed PD of stage II according to the Hoehn and Yahr classification. They were divided into professionally working and non-working subjects and those participating and not participating in physiotherapy programs. The Unified Parkinson's Disease Rating Scale (UPDRS), was used to estimate the patients' clinical status. The Parkinson's Disease Questionnaire (PDQ-39), the Quality of Life Short Form (SF-36) Questionnaire and the Parkinson's Disease Quality of Life Questionnaire (PDQL) were used to estimate the quality of life. RESULTS: In all groups statistically significant differences were observed in each of the used scale. The PDQ-39 (F = 5.278, p = 0.04), SF physical component (F = 4.24, p = 0.005), SF mental component (F = 3.45, p = 0.021), PDQL (F = 6.57, p = 0.003). The highest quality of life was noticed in people working professionally and participating in physiotherapy programs. CONCLUSIONS: Professional activity and participation in properly planned physiotherapy help reduce the symptoms and improve the quality of life of people with Parkinson's disease. The study showed that the quality of life of people with PD is determined by professional work and participation in the process of rehabilitation. Med Pr 2017;68(6):725-734.


Asunto(s)
Actitud Frente a la Salud , Personas con Discapacidad/psicología , Enfermedad de Parkinson/psicología , Enfermedad de Parkinson/rehabilitación , Calidad de Vida/psicología , Femenino , Estado de Salud , Humanos , Masculino , Persona de Mediana Edad , Modalidades de Fisioterapia , Encuestas y Cuestionarios
10.
Biomed Res Int ; 2017: 3631624, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28626755

RESUMEN

The factor determining quality of life in Parkinson's disease (PD) is the worsening of a patient's walking ability. The use of external stimuli can improve gait when performing complex motor patterns. The aim of this study was to evaluate the effect of rehabilitation on the effectiveness of control signals in people with PD. The study was performed on 42 people with idiopathic PD in the third stage of disease. The control group consisted of 19 patients who did not participate in rehabilitation activities. The experimental group was systematically participating in rehabilitation activities twice a week (60 minutes) for 9 months. Gait speed, mean step length, and step frequency were calculated on the basis of the obtained results. These parameters were compared in both groups by single factor variance analyses. The best results were obtained using rhythmic external auditory signals. The group with patients actively participating in rehabilitation showed statistically significant improvement in gait speed (12.35%), mean step length (18.00%), and frequency step (2.40%) compared to the control group. The presented research showed the positive effect of rehabilitation and was based on the performance of complex motion patterns, using external control signals for their effectiveness in new motion tasks.


Asunto(s)
Marcha , Enfermedad de Parkinson/fisiopatología , Enfermedad de Parkinson/rehabilitación , Caminata , Anciano , Femenino , Humanos , Masculino , Persona de Mediana Edad
11.
Hong Kong J Occup Ther ; 29(1): 19-25, 2017 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-30186069

RESUMEN

OBJECTIVE/BACKGROUND: The aim of this study was to assess the leisure-time physical activity of Polish white-collar workers in relation to various health recommendations. METHODS: The study used a cross-sectional design with a convenience sample of 482 white-collar workers from Poland. Researchers recorded the leisure-time physical activity logs for 7 consecutive days of the week. Physical activity level was interpreted in relation to the World Health Organization and the American College of Sports Medicine recommendations. RESULTS: Among the workers, 42% of women and 53% of men declared moderate physical activity for at least 150 minutes per week, but only 23% of women and 18% men undertook activity in at least 5 days. CONCLUSION: The results of the physical activity identified were significantly different from the American College of Sports Medicine and World Health Organization recommendations. The lower percentage of workers who met American College of Sports Medicine recommendations was caused by insufficient frequency of physical efforts.

12.
Work ; 54(3): 569-75, 2016 Jun 04.
Artículo en Inglés | MEDLINE | ID: mdl-27286069

RESUMEN

BACKGROUND: Parkinson's disease (PD) is a neurodegenerative disease. Due to a constantly growing incidence rate and lowering age of PD patients it is becoming a more serious social problem. OBJECTIVE: The aim of this study was to determine the effectiveness of physiotherapy procedure of patients with PD depending on their working status. METHODS: The research was carried out on 89 people with diagnosed PD of IInd stage according to the Hoehn and Yahr classification. They were divided into two groups: working professionally and non-working. The Unified Parkinson's Disease Rating Scale (UPDRS) was used to estimate patients' clinical status while the PDQ-39 (Parkinson's Disease Questionnaire) scale evaluated quality of life. Patients took part in rehabilitation activities twice a week for a period of 20 weeks. In both groups an improvement in physical activity and a quality of life were achieved. RESULTS: Better effects were observed in the group of working patients. Statistically significant differences were notice in part II UPDRS (p = 0.001), part I, II and III total of UPDRS (p = 0,001) and in the PDQ-39 test (p = 0.003). CONCLUSIONS: Employment and participation in properly planned physiotherapy help reduce the symptoms and improve the quality of life in people with Parkinson's disease.


Asunto(s)
Empleo , Enfermedad de Parkinson/rehabilitación , Modalidades de Fisioterapia , Ejercicio Físico , Femenino , Humanos , Masculino , Persona de Mediana Edad , Enfermedad de Parkinson/complicaciones , Calidad de Vida , Índice de Severidad de la Enfermedad
13.
J Phys Ther Sci ; 27(8): 2419-22, 2015 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-26356173

RESUMEN

[Purpose] Type 2 diabetes mellitus is a disease of civilization with epidemiological coverage. An integral component of a comprehensive process of type 2 diabetes mellitus prevention and treatment is reasonably proportioned exercise. The aim of the study was to evaluate the weekly physical activity of patients with type 2 diabetes mellitus and healthy subjects with respect to recommendations of the American College of Sports Medicine and American Diabetes Association. [Subjects] The study involved 31 patients with type 2 diabetes mellitus (treatment duration 9 ± 0.8) and 31 healthy people. [Methods] Physical activity levels were determined by the International Physical Activity Questionnaire. A χ(2) test was applied to determine the percentage of people who met recommendations. [Results] Analysis of the obtained results demonstrated that the intensity of physical activity in patients with diabetes was moderate or low. The men in the control group met the recommendations for standard health-related activities significantly more often than the patients with diabetes. In women, there was no such relationship, since most of the women were insufficiently physically active. [Conclusion] The conclusion to be drawn is that there is an urgent need to develop and implement effective programs to enhance physical activity among people at risk of diseases of civilization, including type 2 diabetes.

14.
J Phys Ther Sci ; 26(9): 1329-31, 2014 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-25276010

RESUMEN

[Purpose] Parkinson's disease is one of the most frequent diseases of the central nervous system. Thorough knowledge of reasons for movement defects may contribute to the ability to quality of life at a good level as far as motor abilities are concerned. The aim of the study was to evaluate the influence of functional movement rehabilitation on the degree of intensity of movement symptoms in Parkinson's disease. [Subjects] The research was carried out in people diagnosed with stage III Parkinson's disease, according to the Hoehn and Yahr scale classification. [Methods] In order to establish the clinical state of patients, parts I, II, and III of the Unified Parkinson's Disease Rating Scale, the Schwab and England Activities of Daily Living scale, and the quality of life in Parkinson's disease questionnaire were applied. The intervention group took part in 60 minutes of functional movement rehabilitation twice a week for a period of 15 weeks. The main emphasis was placed on the ability to cope with everyday activities. [Results] A significant difference in scores for the given scales between before and after research the intervention period was observed in the intervention group. [Conclusion] The obtained results revealed positive that the influence of applied rehabilitation program had a positive influence on the degree of intensity of movement symptoms in people with Parkinson's disease.

15.
Med Pr ; 65(2): 181-8, 2014.
Artículo en Polaco | MEDLINE | ID: mdl-25090847

RESUMEN

BACKGROUND: The role of physical activity (PA) in the prevention and treatment of civilization diseases has been recognized by the medical society. Despite extensive knowledge and well-documented evidence of health aspects of PA, the identification and assessment of the PA level in various social and professional groups are still needed. The main goal of this research was to work out a preliminary assessment of possible relationship between recreational physical activity and reduced common musculoskeletal disorders in nurses. MATERIAL AND METHODS: The study included 93 nurses, aged 41.4+/-7.31, with body height of 164.4+/-7.04 and body weight of 64.5+/-10.8. The Nordic Musculoskeletal Questionnaire (NMQ) was applied to assess pain and the International Physical Activity Questionnaire (IPAQ) (long version) to assess the level of physical activity. The intergroup differences, due to the occurrence of pain and physical activity levels, were determined using the Mann Whitney test and the Kruskal Wallis test. To evaluate the significance of individual factors potentially influencing the onset of musculoskeletal pains, the Chi2 test for independence was performed. RESULTS: Over 70% of the examined nurses reported musculoskeletal complaints, mostly related with lower back pain. Taking up recreational activity, of at least moderate to vigorous physical activity (MVPA), reduces the risk of musculoskeletal disorders. CONCLUSION: It is most likely that recreational physical activity at appropriate parameters may prevent musculoskeletal disorders, especially in nurses with long work experience. However, this hypothesis needs to be verified by experimental studies with use of objective tools for the assessment of physical activity.


Asunto(s)
Ejercicio Físico , Enfermedades Musculoesqueléticas/epidemiología , Enfermedades Musculoesqueléticas/prevención & control , Enfermeras y Enfermeros/estadística & datos numéricos , Enfermedades Profesionales/epidemiología , Enfermedades Profesionales/prevención & control , Conducta de Reducción del Riesgo , Adulto , Femenino , Humanos , Dolor de la Región Lumbar/epidemiología , Dolor de la Región Lumbar/prevención & control , Masculino , Persona de Mediana Edad , Aptitud Física , Polonia , Encuestas y Cuestionarios
16.
J Sports Sci Med ; 10(1): 175-83, 2011.
Artículo en Inglés | MEDLINE | ID: mdl-24149312

RESUMEN

The aim of the present study was to evaluate the efficacy of intermittent hypoxic training (IHT) with 95 % of lactate threshold workload (WRLT) on aerobic capacity and endurance performance in well-trained cyclists. Twenty male elite cyclists, randomly divided into a hypoxia (H) group (n=10; age 22 ± 2.7years; VO2max 67.8 ± 2.5 ml·kg(-1)·min(-1); body height (BH) 1.78 ± 0.05 m; body mass (BM) 66.7 ± 5.4kg; fat free mass (FFM) 59.3 ± 5.1kg; fat content (FAT%) 11.3 ± 2.1%), and a control (C) group (n = 10; age 23.5 ± 3. 5years; VO2max 67.7 ± 2.0 ml·kg(-1)·min(-1); BH 1.79 ± 3.2 m; BM 69.2 ± 5.5 kg; FFM 63.6 ± 4.8 kg; FAT% 7.9 ± 1.94 %) took part in the research project. The training program used during the experiment was the same for the both groups. For three weeks, the subjects in H group performed 3 training sessions per week in normobaric hypoxia environment (IHT - O2 = 15. 2%). During the elemental core of the IHT session, the intensity was set at 95% WRLT for 30-min in 1(st) microcycle, 35-min in 2(nd) microcycle and 40-min in 3(rd) microcycle. The same training procedure was provided in C group, yet the intensity of the main sessions were set at 100% WRLT in the normoxia environment. The results indicate a significant (p < 0.05) increase in VO2max,VO2LT, WRmax, WRLT and change in lactate concentration (∆LA) during incremental test in H group. Also a significant (p < 0.05) decrease in time of the time trial was seen, associated with a significant increase (p < 0.05) in average generated power (Pavg) and average speed (Vavg) during the time trial. The intermittent hypoxic training (IHT) applied in this research did not significantly affect the hematological variables considered: number of erythrocytes (RBC), hemoglobin concentration (HGB) and haematocrit value (HCT). Significant blood value increases (p < 0.05) were only observed in MCV in H group. This data suggests that intermittent hypoxic training at lactate threshold intensity and medium duration (30-40min) is an effective training means for improving aerobic capacity and endurance performance at sea level. Key pointsThe efficacy of the intermittent hypoxic training is mostly dependent on volume and intensity of exercise in the hypoxic environment.The observed results suggests that intermittent hypoxic training at lactate threshold intensity and medium duration (30-40min) is an effective training means for improving aerobic capacity and endurance performance at sea level.

17.
J Sports Sci Med ; 8(4): 591-9, 2009.
Artículo en Inglés | MEDLINE | ID: mdl-24149601

RESUMEN

The main aim of this paper was to evaluate the effects of short- term (6 days) phosphate loading, as well as prolonged (21 days) intake of sodium phosphate on aerobic capacity in off-road cyclists. Nineteen well-trained cyclists were randomly divided into a supplemental (S) and control group (C). Group S was supplemented for 6 days with tri-sodium phosphate, in a dose of 50 mg·kg(-1) of FFM/d, while a placebo was provided for the C group. Additionally, group S was further subjected to a 3-week supplementation of 25 mg·kg(-1) FFM/d, while group C received 2g of glucose. The results indicate a significant (p < 0.05) increase in VO2max, VEmax, and O2/HR, due to sodium phosphate intake over 6 days. Also a significant (p < 0.05) decrease in HRrest and HRmax occurred. The supplementation procedure caused a significant increase (p < 0.05) in Pmax and a shift of VAT towards higher loads. There were no significant changes in the concentration of 2,3-DPG, acid-base balance and lactate concentration, due to phosphate salt intake. Key pointsStudies on bone acute biochemical response to loading have yielded unequivocal results.There is a paucity of research on the biochemical bone response to high impact exercise.An increase in bone turnover was observed one to two days post exercise.

18.
J Sports Sci Med ; 8(1): 45-50, 2009.
Artículo en Inglés | MEDLINE | ID: mdl-24150555

RESUMEN

The purpose of this study was to evaluate the effect of oral administration of sodium bicarbonate (300 mg·kg(-1) b.w.) on swim performance in competitive, (training experience of 6.6 ± 0.6 years) youth, (15.1 ± 0.6 years) male swimmers. The subjects completed a test trial, in a double blind fashion, on separate days, consisting of 4 x 50m front crawl swims with a 1(st) minute passive rest interval twice, on two occasions: after ingestion of bicarbonate or placebo, 72 hours apart, at the same time of the day. Blood samples were drawn from the finger tip three times during each trial; upon arrival to the laboratory, 60 min after ingestion of placebo or the sodium bicarbonate solution and after the 4 x 50m test, during the 1st min of recovery. Plasma lactate concentration, blood pH, standard bicarbonate and base excess were evaluated. The total time of the 4 x 50 m test trial improved from 1.54.28 to 1.52.85s, while statistically significant changes in swimming speed were recorded only during the first 50m sprint (1.92 vs. 1.97 m·s(-1), p < 0.05). Resting blood concentration of HCO(-) 3 increased following the ingestion of sodium bicarbonate from 25.13 to 28.49 mM (p < 0.05). Sodium bicarbonate intake had a statistically significant effect on resting blood pH (7.33 vs. 7.41, p < .05) as well as on post exercise plasma lactate concentration (11.27 vs. 13.06 mM, p < 0.05)). Collectively, these data demonstrate that the ingestion of sodium bicarbonate in youth athletes is an effective buffer during high intensity interval swimming and suggest that such a procedure can be used in youth athletes to increase training intensity as well as swimming performance in competition at distances from 50 to 200 m. Key pointsSodium bicarbonate is an effective ergogenic aid, also in youth athletes.Sodium bicarbonate intake improves swimming sprint performance.Sodium bicarbonate intake increases resting blood pH and bicarbonate level.

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