RESUMO
ABSTRACT: Marins, EF, Dawes, JJ, and Del Vecchio, FB. Age and sex differences in fitness among Brazilian Federal Highway Patrol Officers. J Strength Cond Res 37(6): 1292-1297, 2023-Age- and sex-related differences in fitness have been observed in U.S.-based law enforcement agencies. However, these differences have not been fully explored among agencies outside the United States. The purpose of this investigation was to explore the age- and sex-related differences on selected measures of physical fitness among Brazilian Federal Highway Police Officers. Retrospective physical fitness data for 7,044 (men = 6,283 and women = 761) officers were provided for analysis. These tests included sit-ups and push-ups (muscular endurance), flexed-arm hang/pull-ups (upper-body strength), standing broad jump (lower-body power), and a 12-minute run (aerobic capacity). Data were stratified by age into 20-29, 30-39, 40-49, and 50-59 year groups and analyzed by sex. Independent samples t-tests were used to assess sex-related differences, and a one-way analysis of variance with Bonferroni post hoc for multiple pairwise comparisons was used to calculate differences between age groups. A linear regression was then used to verify the effect of age on the physical fitness for both sexes. Male officers were older, heavier, and taller and displayed greater upper-limb muscular endurance and aerobic capacity than female officers ( p < 0.05). General declines in muscular endurance, strength, lower-body power, and cardiorespiratory fitness were observed among male officers ( p < 0.05) by age groups. Significant ( p < 0.05) declines in fitness were also observed among older female officers in muscular endurance, lower-body power, and cardiorespiratory fitness. These general declines in fitness with age progression may negatively impact an officers overall health and occupational fitness. Officers should strive to attain and maintain adequate levels of fitness to sustain health, fitness, and occupational performance throughout their career. It is recommended that both male and female officers engage in strength training and conditioning programs focused to combat the potential deleterious effects of aging.
Assuntos
Teste de Esforço , Caracteres Sexuais , Humanos , Feminino , Masculino , Estudos Retrospectivos , Brasil , Aptidão Física , PolíciaRESUMO
Regardless of sex or body size, police tasks may require officers to change direction speed (CODS) under occupational loads. The purpose of this study was to investigate body composition and CODS in female and male police cadets in both unloaded and occupationally loaded conditions. Body composition and CODS of 51 female (FPC) and 70 male police cadets (MPC) were assessed. Six body composition indices were used: Body mass index (BMI), percent body fat (PBF), percent of skeletal muscle mass (PSMM), protein fat index (PFI), index of hypokinesia (IH), and skeletal muscle mass index (SMMI). The CODS was assessed by Illinois Agility Test (IAT) and IAT while carrying a 10-kg load (LIAT). An independent sample t-test was used to identify the differences between the sexes. The regression determined associations between body composition and LIAT. The alpha level was set at p < 0.05 a priori. MPC had significantly higher (p < 0.001) BMI, PSMM, PFI and SMMI and lower PBF and IH than FPC. MPC were also faster in IAT and LIAT, carrying lower relative loads that imparted less of an impact on CODS performance. Body composition was strongly associated with the time to complete LIAT (R2 = 0.671, p < 0.001). Difference in relative load and body composition influenced CODS performance in both unloaded and loaded conditions. Thus, optimizing body composition through increasing skeletal muscle mass and reducing fat mass could positively influence unloaded and loaded CODS performance and improve elements of police task performance.
El trabajo policial puede requerir que los oficiales cambien la velocidad de dirección (CVD) bajo cargas ocupacionales, indistintamente del sexo o tamaño corporal. El propósito de este estudio fue investigar la composición corporal y los CVD en cadetes de policía de ambos sexos, tanto en condiciones de descarga como de trabajo. Se evaluaron la composición corporal y los CVD de 51 mujeres (CPF) y 70 cadetes de policía masculinos (CPM). Se utilizaron seis índices de composición corporal: índice de masa corporal (IMC), porcentaje de grasa corporal (PGC), porcentaje de masa muscular esquelética (PMME), índice de grasa proteica (IGP), índice de hipocinesia (IH) e índice de masa muscular esquelética (IMME). El CVD fue evaluado por Illinois Agility Test (IAT) y IAT mientras transportaba una carga de 10 kg (LIAT). Se usó una prueba t de muestra independiente para identificar las diferencias entre los sexos. La regresión determinó asociaciones entre la composición corporal y LIAT. El nivel alfa se estableció en p <0,05 a priori. CPM registraron un IMC, PMME, PGC y IMME significativamente más altos (p <0,001) y PGC e IH más bajos que las mujeres (CPF). Los CPM también fueron más rápidos en IAT y LIAT, llevando cargas más bajas, las que tuvieron un impacto menor en el rendimiento de CVD. La composición corporal estaba asociada con el tiempo para completar LIAT (R2 = 0,671, p <0,001). La diferencia en la carga relativa y la composición corporal influyeron en el rendimiento de CVD tanto en condiciones descargadas como cargadas. Por lo tanto, la optimización de la composición corporal a través del aumento de la masa del músculo esquelético, y la reducción de la masa grasa podrían influir de manera positiva en el rendimiento de CVD descargados y cargados, mejorando el rendimiento del trabajo policial.
Assuntos
Humanos , Masculino , Feminino , Adulto Jovem , Composição Corporal , Caracteres Sexuais , Polícia , Movimento/fisiologia , Índice de Massa Corporal , Modelos Logísticos , Fatores Sexuais , Tecido Adiposo , Carga de TrabalhoRESUMO
BACKGROUND: Police institutions often use Occupational Physical Ability Tests (OPATs) as a measure of occupational performance. These tests are utilized to mimic the daily and essential tasks performed by the police officers, but few are performed with load carriage (LC). The purpose of this study was to examine the physical performance predictors of an OPAT performed without (NPPE) and with (WPPE) LC. METHODS: Thirteen federal highway police officers (age: 36.8±3.7 years, body mass: 89±10.7 kg, height: 180±5.6 cm) volunteered to complete a battery of physical fitness tests (aerobic power and capacity, muscular endurance, lower limb power, upper limb strength, agility and anaerobic power) and anthropometrics. Occupational performance was measured by the total OPAT time consisting of 7 sequential police tasks. All subjects randomly completed the tests on both LC conditions. RESULTS: Agility (P<0.01), lower limb power and height (P<0.05) were significantly related to performance in the NPPE OPAT. In the WPPE condition, aerobic power (absolute and relative) (P<0.01), lower limb power and agility (P<0.05). The best predictors for OPAT performance were agility (R2=0.45, P<0.01) in the NPPE condition, as well as relative aerobic power, upper limb strength and agility in the WPPE condition (R2=0.81, P<0.01). CONCLUSIONS: Different conditions of LC have distinct occupational performance predictors. Thus, considering LC, physical exercise programs aimed at improving police occupational performance should aim at improving agility, upper limb strength and aerobic fitness.