Predictive Role of Physical Activity and Health-Related Quality of Life in Police Officers' Work Assessment.

Police officers (POs) frequently encounter high stress and burnout risks in their demanding professional environment. This study delves into the relationship between physical activity (PA), health-related quality of life (HRQoL), and job performance among POs. A cross-sectional survey was conducted involving 1175 POs, with 691 providing complete responses. The survey included questions on biosocial and professional characteristics; the International Physical Activity Questionnaire-short form; the Short Form Health Survey version 2.0; and a qualitative job performance evaluation. The key findings highlight that vigorous PA significantly enhances job performance. About 46.2% of POs engage in vigorous PA, with a notable 73.7% participating in some form of PA weekly. This study also found that age and gender considerably impact the HRQoL, especially in mental health aspects like vitality and social functioning. Vigorous PA is linked to higher job performance ratings, especially when practised consistently. In conclusion, this research underscores the importance of vigorous PA in improving job performance among POs. We suggest that institutions prioritise facilitating environments that encourage regular PA, recognising its substantial benefits in both professional effectiveness and the overall health of POs. This study contributes to understanding the critical role of physical fitness in enhancing the occupational well-being of law enforcement personnel.

Work, Training and Life Stress in ITU World Olympic Distance Age-Group Championship Triathletes.

We assessed the training, work and Life Stress demands of a mixed gender group of 48 top amateur short-distance triathletes using an online retrospective epidemiological survey and the Life Events Survey for Collegiate Athletes. On superficial inspection, these mainly masters athletes appeared to undergo all the types of training that are recommended for the aging athlete. However, there were significant scheduling differences between their weekday vs. their weekend training, suggesting that age-groupers' outside sports commitments may affect their training efficacy. The triathletes claimed to periodize, to obtain feedback on and to modify their training plans when appropriate-and some evidence of this was obtained. Over the year preceding the ITU World Age-Group Championships, they averaged 53%, 33% and 14% of their combined swim, cycle and run training time, respectively, within intensity zones 1, 2 and 3. Although the triathletes specifically stated that their training was focused on preparation for the ITU World Age-Group Championships, the way that they modified their training in the month before the event suggested that this aim was not necessarily achieved. Sports-related stress accounted for most-42.0 ± 26.7%-of their total Life Stress over the preceding year (vs. 12.7 ± 18.6% for Relationship-, 31.3 ± 25.9% for Personal- and 14.0 ± 21.1% for Career-related Stress). It affected most athletes, and was overwhelmingly negative, when it related to failure to attain athletic goal(s), to injury and/or to illness.

Four-Year Training Course for Police Officers (CFOP) and Fitness Outcomes of Police Academy Cadets: A Cohort Study from 2004 to 2020.

This study examines the effect of gender, age, and a 4-year training course for police officers (CFOP) on the physical fitness attributes of Portuguese police academy cadets. This longitudinal cohort study considered 686 police cadets (female, n = 131; male, n = 555 male), corresponding to 2578 fitness assessments (female, n = 509; male, n = 2069). The database of police cadets' physical fitness evaluations (from 2004/2005 to 2019/2020) comprises body size, speed, agility, strength, flexibility, and aerobic capacity first assessment (T0) and evaluations at the end of the first four years of the CFOP (T1, T2, T3, T4). Results showed that (i) female cadets are younger (p < 0.05), shorter, lighter, less fast, less agile, less strong, and perform worse in aerobic capacity assessments than male cadets (all, p < 0.001) but perform better in the flexibility assessment (p < 0.001); (ii) female cadets > 29 years are significantly heavier, slower, jump less, perform fewer sit-ups, and perform less on the Cooper test (but they have more handgrip strength), and male cadets > 29 years are significantly heavier, slower, jump less, perform fewer sit-ups, and have less flexibility and aerobic capacity (still, they have superior back and lumbar strength and handgrip strength); and (iii) from T0 to T4 (Δ), female cadets are significantly faster (60 m, -0.32 s; slalom, -0.78 s), jump further (+4 cm), have more abdominal strength endurance (+2.6 repetitions) and more back and lumbar strength (+89.8 kg), and male cadets are significantly heavier (+3.27 kg), faster (60 m, -0.23 s; 30 m, -0.15 s; slalom, -0.91 s), jump further (+8 cm), complete more repetitions in the sit-ups (+4.9 repetitions) and in pull-ups (+2.5 repetitions) and have more back and lumbar strength (+92.1 kg) and handgrip strength (+8.6 kg) but a lower aerobic capacity (Cooper test, -74.8 m; VO2max, -1.3 mL/kg/min) when compared to T0. The study's findings lead to widely accepted conclusions within the discipline. Nevertheless, this work provides valuable insights into the impact of various factors on the physical fitness of Portuguese police academy cadets, i.e.: (i) it is an essential study with practical implications for recruitment, training, and the ongoing development of Portuguese police academy cadets and police officers; and (ii) these results can also assist in tailoring training programs to different age groups and genders, which is crucial in police training.

Physical Fitness and Psychosocial Profiles of Policewomen from Professional Training Courses and Bodyguard Special Police Sub-Unit.

Police work demands a high level of physical fitness (PF) and psychosocial well-being (PSWB) to cope with the challenges and demands of the profession. The profession has historically been male-dominated, and female police officers (POs) face unique challenges and stereotypes. This study aims (i) to identify the PF and PSWB attributes that significantly distinguish the women from three different professional training courses (agents, chiefs, and officers) and (ii) to assess the significance of PF and PSWB attributes on the likelihood that women in professional training courses belonging to a special bodyguard police sub-unit. A cross-sectional analytical study was conducted, involving 102 female POs (professional PO training courses, n = 94; special bodyguard police sub-unit, n = 8). PF (morphology; fitness, including endurance, strength, and flexibility tests) and PSWB (measured through scales for grit and dispositional resilience) attributes were assessed. Significant differences were observed in age, morphological (height and waist-to-hip ratio), fitness (horizontal jump and endurance tests), and PSWB (perseverance in effort and alienation) attributes among the three professional training courses. Stepwise discriminant analysis revealed that waist-to-hip ratio, waist-to-height ratio, relative fat mass, relative muscle mass, horizontal jump, and endurance on exertion significantly distinguished between the three groups. Complementarily, it was observed that the waist-to-hip ratio and sit-up attributes influence the probability of women from the professional training courses joining the special bodyguard police sub-unit. The study highlights that (i) female POs in different professional training courses showed distinct PF and PSWB profiles, and (ii) only two PF attributes (waist-to-hip ratio and sit-up) were predictors for the special bodyguard police sub-unit. In accordance, these findings provide valuable insights for designing training programs to support female POs in improving their PF, psychological well-being, and overall performance in the police profession.

Correction: Rasteiro et al. Physical Training Programs for Tactical Populations: Brief Systematic Review. Healthcare 2023, 11, 967.

In the original publication [...].

COVID-19 Social Restrictions' Impact on the Health-Related Physical Fitness of the Police Cadets.

We aim to examine the changes in health-related physical fitness components, before and after COVID-19 social restrictions, in Police Academy cadets by age, sex, and physical activity (PA) level. A longitudinal analysis of 156 cadets (29.5% women) aged 25.4 ± 5.3 years old was conducted. All variables were collected before and after the lockdown period (13 weeks). PA levels were assessed with a self-reported questionnaire. Health-related physical fitness components were assessed based on the standardized protocols of morphological evaluation, speed, agility, strength, flexibility, and aerobic capacity tests. Despite the high correlations between pre- and post-pandemic social restrictions, we found significantly higher values for anthropometric indicators and lower physical fitness levels in post-pandemic restrictions, except for lower-body strength. When stratifying the sample by sex, age, and PA categories, the results indicate that the COVID-19 lockdown tends to differently impact anthropometric indicators and the physical fitness of the cadets, according to their sex, age, and PA categories. Our findings show that our sample reduces several health-related physical fitness components due to the social lockdown, with emphasis on cardiorespiratory fitness in men and upper-limb strength in women, highlighting the need to create effective strategies to keep police officers active during situations of less physical work.

Establishing Reference Data for Fitness Assessment of Law Enforcement Officers Using a Qualitative Systematic Review.

Physical fitness tests are a standard means of evaluating the competence of police officers. This qualitative review aims (i) to document, compare, and examine the reference values available in the current literature regarding fitness tests for Law Enforcement Officers (LEOs), and (ii) to define reference values for the most used fitness tests to assess and predict police officer performance. A total of 1879 records were collected for review from two major literature databases, PubMed and ScienceDirect. After applying our exclusion criteria, a total of 19 studies were considered. All studies demonstrated acceptable methodological quality in fitness assessment, and the most used components were muscle strength, muscular endurance, muscle power, aerobic and anaerobic capacity, flexibility, and agility. This review provides (i) a methodological definition for the physical fitness assessment that helps select the most used fitness tests, (ii) a standardised methodology for establishing reference data for fitness tests appropriate for LEOs; and (iii) aggregate reference values for selected fitness tests. This may improve selection and retention procedures, considering that this group performs its duties in an environment and under conditions that differ from those of other occupational groups. Complementarily, this qualitative review also provides a foundation for developing effective interventions to improve each aspect of fitness testing for police officers.

Physical Training Programs for Tactical Populations: Brief Systematic Review.

This review aims (i) to identify and analyze the physical training programs used for tactical personnel (TP) and (ii) to understand the effects of physical training programs on the health and fitness, and occupational performance of tactical personnel. A literature search used the keywords 'Physical Training Program', 'Police', 'Law Enforcement', and 'Firefighter'. A total of 23 studies out of 11.508 analyzed were included. All studies showed acceptable methodological quality in assessing physical fitness (PF), and training programs' effect sizes (Cohen's d) on PF attributes were calculated. The results showed that physical training programs (duration > four weeks) can improve (medium-to-large effects) (i) measures of physical fitness and (ii) performance in simulations of occupationally specific tasks. This review provides summary information (i) to help select (or adjust) physical training programs for TP and (ii) to clarify the effect of different occupational-specific training interventions on fitness measures and health-related parameters for TP.

Comparison of Acute Arterial Responses Following a Rescue Simulation and Maximal Exercise in Professional Firefighters.

Cardiovascular events are the leading cause of on-duty deaths among firefighters. Screening firefighters for risk of sudden cardiac event is a critical element of a comprehensive medical program. Although intense physical exertion has been shown to trigger sudden cardiac events in the general population, it is unclear how hemodynamic responses following clinical exercise testing compare to that of performing firefighting tasks in personal protective equipment. Therefore, the purpose of this study was to compare hemodynamic responses following rescue simulation (RS) and maximal exercise in firefighters. This was a cross-over repeated measures study. Thirty-eight professional firefighters (31.8 ± 5.2 yr; VO2peak: 57.9 mL/kg/min) completed a maximal aerobic exercise test (MAET) and an RS. Pulse wave velocity (PWV), pulse pressure (PP), and brachial and central mean arterial pressure (MAP) were measured before and 5 and 15 min post-exercise. The findings indicated that femoral PWV decreased after MAET and RS at both time points (p < 0.005). No significant differences were found in aortic and carotid PWV over time or between conditions (p ≥ 0.05). Significant increases in brachial and central PP and MAP were noted 5 min post-MAET and RS (p = 0.004). In conclusion, the present study demonstrated that peripheral arterial stiffness (AS) decreased in firefighters following both conditions, with no differences in central AS. Our findings provide valuable information on hemodynamic responses similar between RS and MAET, and are important for controlling CVD risk and the AS response.

Idades de referência dos atletas medalhados nos campeonatos de portugal de atletismo: estudo de 30 anos (1990-2019) / Reference ages of medallists at the portuguese athletics championships: a 30-year study (1990-2019)

RESUMO Segundo a literatura, um inventário preciso da distribuição das idades de melhor desempenho nas diferentes disciplinas do atletismo pode proporcionar uma informação ímpar na altura de se produzirem planos e programas de treino de longo prazo para eventos ao mais alto nível. O presente estudo tem como objetivo identificar a idade de melhor desempenho dos atletas participantes nos campeonatos de Portugal de atletismo, com referência às disciplinas e setores que caracterizam a competição. Foram consideradas todas as participações medalhadas (pista coberta - PC, n = 2310; ar livre - AL, n = 3161). Os intervalos de confiança para a idade média dos atletas medalhados foram obtidos com recurso ao método de Equações de Estimação Generalizadas. Os resultados indicaram a média de idades, (i) PC, mais baixa no salto com vara feminino (21.60 anos) e no salto em comprimento masculino (24.42 anos), e mais elevada nos 3000 m marcha feminino (25.18 anos) e nos 5000 m marcha masculino (29.70 anos); (ii) AL, mais baixa no salto em comprimento feminino (22.90 anos) e nos 200 m masculino (23.46 anos), e mais elevada nos 5000 m feminino (27.55 anos) e 10000 m marcha masculino (32.23 anos). Os resultados sugerem que as idades de melhor desempenho ocorrem (i) PC, entre os 23 e os 24 anos nas atletas femininas, e os 24 e os 25 nos atletas masculinos; (ii) AL, entre os 23 e os 25 anos nas atletas femininas, e os 24 e 26 anos nos atletas masculinos. O conhecimento objetivo das idades de melhor desempenho nos campeonatos de Portugal de atletismo, por sexo e disciplina, poderá ser uma informação útil para uma gestão eficiente de talentos e das carreiras desportivas.

ABSTRACT According to the literature, a precise inventory of the distribution of the best-performing ages in the different athletics disciplines can provide unique information when producing long-term training plans and programs for events at the highest level. This study aims to identify the age at which athletes participating in the Portuguese athletics championships performed best, with reference to the disciplines and sectors that characterize the competition. All medal-winning participations were considered (indoor track and field, n = 2310; outdoor track and field, n = 3161). Confidence intervals for the average age of medal-winning athletes were obtained using the Generalized Estimating Equations method. The results indicated that the average ages were (i) Indoor track and field - lower in the women's pole vault (21.60 years) and men's long jump (24.42 years), and higher in the women's 3000 m run (25.18 years) and men's 5000 m race walk (29.70 years); (ii) Outdoor track and field - lower in the women's long jump (22.90 years) and men's 200m (23.46 years), and higher in the women's 5000 m (27.55 years) and men's 10000 m race walk (32.23 years). The results suggest that the best-performing ages are (i) Indoor track and field - between 23 and 24 years old in female athletes and 24 and 25 years old in male athletes; (ii) Outdoor track and field - between 23 and 25 years old in female athletes, and 24 and 26 years old in male athletes. Objective knowledge of the best-performing ages in the Portuguese athletics championships by gender and discipline could be useful information for efficient talent and career management.

Arterial Stiffness following Endurance and Resistance Exercise Sessions in Older Patients with Coronary Artery Disease.

Arterial stiffness (AS) is associated with coronary artery disease (CAD). Acute endurance training decreases AS, whereas acute resistance training increases it. However, these results are from studies in apparently healthy adults, and there is no information on the effects of such afterload AS in elderly patients with CAD. We aimed to investigate the effect of acute endurance or resistance training on the time course of changes in the indices of AS in elderly patients with CAD in order to understand how stiffness responds after training. We tested 18 trained men with CAD. AS was measured using central and peripheral pulse wave velocity (PWV) after 15 min of rest and after 5, 15, and 30 min of endurance and resistance training sessions. The endurance session consisted of high-intensity interval walking at 85-90% of maximum heart rate, and the resistance session consisted of 70% of the maximum of one repetition. An interaction effect was found for central and peripheral PWV (p ≤ 0.001; carotid, η2 = 0.72; aortic, η2 = 0.90; femoral, η2 = 0.74), which was due to an increase in PWV after resistance and a decrease in central and peripheral PWV after endurance. This study demonstrates that training mode influences the time course of AS responses to acute exercise in these patients. Acute endurance training decreased AS, whereas resistance training significantly increased it.

Arterial Stiffness Response to Acute Combined Training with Different Volumes in Coronary Artery Disease and Heart Failure Patients.

Resistance training has been shown to acutely increase arterial stiffness (AS), while endurance training appears to decrease AS. However, the findings are from studies in apparently healthy subjects and have limited applicability to patients at low and high cardiovascular risk, for whom combined exercise is recommended. We compared the time course of changes in local and regional indices of AS in response to high-volume combined endurance training (CET) and high-volume combined resistance training (CRT) in patients with coronary artery disease (CAD) and heart failure (HF). We studied 20 men with CAD and HF (10 each) aged 68.3 ± 9.6 years. AS was measured by pulse wave velocity (PWV), and brachial and central blood pressure (BP) were determined after 15 min of rest and 5 and 15 min after the exercise session. All patients completed two sessions on nonconsecutive days. A protocol by time interaction effect was observed for carotid (η2 = 0.21, p = 0.02), aortic (η2 = 0.60, p < 0.001), and femoral (η2 = 0.46, p = 0.01) PWV after CET and CRT, suggesting that PWV decreased after CET and increased after CRT. Decreases in the brachial and central variables of BP across time points were observed in both protocols. CET decreased whereas CRT increased carotid, aortic, and femoral PWV at 15 min after exercise in patients with CAD and HF.

Morphological and Fitness Attributes of Young Male Portuguese Basketball Players: Normative Values According to Chronological Age and Years From Peak Height Velocity.

The aims of the present study were: (i) to describe the structural and functional attributes of young male Portuguese basketball players aged 12-16 years and (ii) to generate normative data according to chronological age and years from peak height velocity. A total of 281 male Portuguese young basketball players between the ages of 12 and 16 years were assessed in this study. Chronological age, maturity parameters (maturity offset and predicted age at peak height velocity), morphological (body mass, height, and skinfolds and length), and fitness (sprint, change of direction ability, jump, and upper body strength) attributes were measured. Descriptive statistics were determined for the age and maturity status, and the 10th, 25th, 50th, 75th, and 90th percentiles were chosen as reference values. Descriptive and normative values of the players' morphological and fitness attributes, stratified by age and maturity status, are provided. The normative values of age at peak height velocity (category YAPHV = 0) showed that regional basketball players presented average values (50th percentile) of 169.8 cm for height, 173.3 cm for arm span, 55.6 kg for body mass, 3.34 s for the 20-m speed test, 10.31 s for the T-test, 4.75 m for the 2-kg medicine ball throw, 66.9 kg for the combined right and left handgrip strength, and 30.1 and 35.9 cm for jump height in the countermovement jump (CMJ) and CMJ with arm swing, respectively. In conclusion, these results may be helpful to quantify and control an athlete's performance over time and to adjust strength and conditioning programs to biological demands.

Reference values for height, weight, and body mass index of children and adolescents aged 2 to 18. A systematic review with an emphasis on the Colombian population / Valores de referencia para estatura, peso e índice de masa corporal en niños, niñas y adolescentes de 2 a 18 años. Una revisión sistemática con énfasis en la población colombiana

Abstract Introduction: Basic body measurements (height, weight, and body mass index) of children and adolescents are essential indicators in the field of health and sports talent identification and selection. Objectives: To identify and synthesize original research studies on basic body measurements in children and adolescents aged 2 to 18 years published between 2003 and 2018. Materials and methods: The search was carried out in PubMed, Epistemonikos, and Google Scholar between May 2017 and June 2018. The inclusion criteria established that the works to be analyzed should be original research articles published in English, Spanish or Portuguese and that they should discuss morphological profile, use basic body measurements or physical fitness measurements as reference criteria, include children and adolescents aged 2 to 18 years in their study population, and be published between 2003 and 2018 in open-access journals with an impact factor. Results: The search yielded 18 articles that described the morphological profile of children and adolescents aged 2 to 18 years; all had a cross-sectional design. Five papers were conducted in Colombia and the remaining 13 in countries or regions of America, Europe, and Asia. Conclusion: This systematic review allowed establishing reference values for height, weight, and BMI, and highlighted the variability of the basic body measurements associated with sex, age, and country of evaluation.

Resumen Introducción. Las dimensiones corporales básicas (estatura, peso e índice de masa corporal) de niños, niñas y adolescentes son indicadores indispensables tanto en el ámbito de la salud, como en procesos de selección de talentos deportivos. Objetivos. Identificar y sintetizar los estudios originales de investigación sobre dimensiones corporales básicas en niños, niñas y adolescentes de 2 a 18 años publicados entre 2003 y 2018. Materiales y métodos. Se realizó una búsqueda de la literatura en PubMed, Epistemonikos y Google Académico entre mayo de 2017 y junio de 2018. Se buscaron artículos originales de investigación en inglés, español o portugués que abordaran el perfil morfológico, que hubieran utilizado como criterio de referencia las dimensiones corporales básicas o las de la condición física; que en su población de estudio incluyeran niños, niñas y adolescentes de 2 a 18 años, y que hubieran sido publicados entre 2003 y 2018 en revistas con factor de impacto y de libre acceso. Resultados. Se encontraron 18 artículos que describían el perfil morfológico en niños, niñas y adolescentes de 2 a 18 años, todos de corte transversal. De estos, 5 se realizaron en Colombia y los 13 restantes en países o regiones de América, Europa y Asia. Conclusión. La presente revisión sistemática permitió establecer un valor de referencia para las variables estatura, peso e IMC, y destacó la variabilidad del perfil morfológico básico asociada con el sexo, la edad y el país de evaluación.

Biological maturation assessment methods in adolescent soccer players considering zinc status / Métodos de evaluación de la maduración biológica en jugadores adolescentes de fútbol considerando el estado de zinc

SUMMARY: The purpose of this study was to compare different methods of maturity evaluation and their relation with performance-related physical and anthropometric variables in young soccer players, with different plasma zinc status. A total of 53 healthy male young soccer players (age: 13±1 years; body mass: 48±10 kg; stature: 160±10 cm) participated in this study. Variables from physical fitness (stature, ST; fat-free mass, FFM; handgrip strength in the dominant hand, DHS), testosterone and zinc plasma concentration were measured. Biological maturity was evaluated by sexual maturity (development of: pubic hair, PH; genitals, GD; axillary hair; AH), bone maturity (TW3 method; BA), and testosterone plasma concentration methods. We observed that: (i) the frequency of hypozincemics and normozincemics children stratified by BA-CA, PH and GD were similar in each category; (ii) the BA allowed the identification of differences between the three categories, in at least two performance-related variables (FFM and DHS, p<0.0001); (iii) the AH method was able to discriminate only for DHS (p<0.0001); and (iv) the testosterone method was not able to identify differences between the four maturation categories with regard to ST, FFM, and DHS. Results suggested that Zinc deficiency did not influence the results obtained for the maturation categories defined by the different assessment methods. The assessment of biological maturation by BA seems to be the most effective for the stratification of performance-related and anthropometric variables in young soccer players. Nevertheless, the AH method should also be considered as a fair option to be used in field studies and practice.

RESUMEN: El objetivo de este estudio fue comparar diferentes métodos de evaluación de madurez y su relación con variables físicas y antropométricas relacionadas con el desempeño en jóvenes jugadores de fútbol, con diferentes niveles plasmáticos de zinc. Participaron en este estudio 53 jugadores de fútbol jóvenes sanos (edad: 13 ± 1 años, masa corporal: 48 ± 10 kg, estatura: 160 ± 10 cm). Se midieron las variables de la aptitud física (estatura, ST, masa libre de grasa, FFM, fuerza de agarre en la mano dominante, DHS), testosterona y concentración plasmática de zinc. Se evaluaron la madurez sexual (desarrollo de vello púbico, PH, genitales, DG, cabello axilar, AH), madurez ósea (método TW3, BA) y concentración plasmática de testosterona. Se observó que: (i) la frecuencia de los niños hipoxincémicos y normozincémicos estratificados por BA-CA, PH y GD fueron similares en cada categoría; (ii) el BA permitió la identificación de diferencias entre las tres categorías, en al menos dos variables relacionadas con el desempeño (FFM y DHS, p <0,0001); (iii) el método AH fue capaz de discriminar sólo para DHS (p <0,0001); y (iv) el método de testosterona no fue capaz de identificar diferencias entre las cuatro categorías de maduración con respecto a ST, FFM y DHS. Los resultados sugirieron que la deficiencia de zinc no influyó en los resultados obtenidos para las categorías de maduración definidas por los diferentes métodos de evaluación. La evaluación de la maduración biológica por BA parece ser la más efectiva para la estratificación de variables de rendimiento y antropométricas en jóvenes jugadores de fútbol. Sin embargo, el método AH también debe ser considerado como una opción justa para ser utilizado en estudios de campo y práctica.