scholarly journals Association between Body Fat Percentage and Physical Performance in Male Korean Police Officers

2020 ◽  
Vol 12 (9) ◽  
pp. 3868
Author(s):  
Jooyoung Kim ◽  
Wi-Young So ◽  
Sangwoon Kim
Keyword(s):  
Grip Strength ◽  
Physical Performance ◽  
Body Fat ◽  
Police Officers ◽  
Hand Grip Strength ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Hand Grip ◽  
Low Levels ◽  
Korean Police Officers

Body composition can affect a police officer’s physical performance. We analyzed the correlation between body fat percentage (%fat) and physical performance in 326 male Korean police officers (age, 44.2 ± 9.2 years; height, 174.0 ± 4.5 cm; weight, 76.4 ± 8.8 kg) who were classified into two groups according to their %fat: high-fat (HFG, %fat ≥ 25%; n = 135) and low-fat (LFG, %fat < 25%; n = 191). Physical performance tests included a 100-m sprint, push-ups, sit-ups, and a hand-grip strength test. The results showed significant differences in performance between the groups in the 100-m sprint (p = 0.001) and in the sit-up test (p = 0.033), but not for push-ups (p = 0.130) or hand-grip strength (p = 0.255). A significant positive correlation was found between %fat and the 100-m sprint (r = 0.255, p < 0.000), and a negative correlation was found between %fat and push-ups (r = −0.117, p = 0.035) and sit-ups (r = −0.199, p < 0.000). However, there was no significant correlation between %fat and hand-grip strength (r = −0.093, p = 0.095). To improve physical performance, an intervention training program is recommended for reducing %fat, because high levels of %fat in male Korean police officers were associated with low levels of physical performance.

scholarly journals S-25OHD Is Associated With Hand Grip Strength and Myopathy at 5 Years in Girls: An Odense Child Cohort Study

2018 ◽  
Vol 103 (7) ◽  
pp. 2630-2639 ◽  
Author(s):  
Rada Faris Al-Jwadi ◽  
Eva Jespersen ◽  
Christine Dalgård ◽  
Niels Bilenberg ◽  
Henrik Thybo Christesen
Keyword(s):  
Vitamin D ◽  
Muscle Strength ◽  
Grip Strength ◽  
Body Fat ◽  
Population Based ◽  
Hand Grip Strength ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Hydroxyvitamin D ◽  
Hand Grip

Abstract Context Severe vitamin D deficiency may lead to myopathy in adults. Little is known about vitamin D and muscle strength in children. Objective To test whether hand grip strength (HGS) in 5-year-old children is associated with serum 25-hydroxyvitamin D (S-25OHD). Design Observational study in the population-based Odense Child Cohort, Denmark. At 5 years, anthropometrics, body fat percentage by skinfold measurements, HGS (n = 881), and S-25OHD2+3 (n = 499) were obtained. Results Mean (SD) HGS was higher for boys compared with girls [8.76 (1.76) vs 8.1 (1.64) kg, P &lt; 0.001]. Mean (SD) 5-year S-25OHD was 70.7 (24.5) nmol/L. HGS was directly associated with height in girls and with weight (directly) and body fat percentage (inversely) in both sexes (P &lt; 0.01 for all). In girls, 5-year S-25OHD was associated with HGS, adjusting for height, weight, and body fat percentage [β = 0.011 (95% CI: 0.004; 0.019), P = 0.003]. S-25OHD ≥75 nmol/L was associated with higher HGS compared with values &lt;50 nmol/L [adjusted β = 0.783 (95% CI: 0.325; 1.241), P = 0.001]. The odds of having myopathy (HGS &lt;10th percentile) were reduced by approximately 70% for S-25OHD ≥50 vs &lt;50 nmol/L [adjusted OR: 0.310 (95% CI: 0.126; 0.762), P = 0.011]. No associations were seen for boys. Pregnancy or umbilical cord S-25OHD did not associate with 5-year HGS. Conclusions Five-year S-25OHD was independently associated with HGS and myopathy in girls but not in boys. Muscle strength may be dependent on vitamin D status even in the higher range in preschool girls. The sex difference remains unexplained.

scholarly journals Health-related physical fitness among adolescent schoolgirls in Madinah city, western Saudi Arabia

2021 ◽  
Vol 5 (1) ◽  
pp. 34-37
Author(s):  
Mohammad Ali Alahmad ◽  
Keyword(s):  
Saudi Arabia ◽  
Standard Deviation ◽  
Physical Fitness ◽  
Grip Strength ◽  
Body Fat ◽  
Hand Grip Strength ◽  
Fat Percentage ◽  
Fitness Components ◽  
Hand Grip ◽  
Health Related

In Saudi Arabia, health-related physical fitness components in girls have received far less attention than physical activity. Therefore, the aim of this study was to assess health-related physical fitness components (cardiorespiratory fitness, body fat, muscle strength, and flexibility) among adolescent schoolgirls in Madinah city, western Saudi Arabia. Thirty-six female students (mean ± standard deviation, age, 17.4 ± 1.3 years; body mass, 51.6 ± 11.1 kg; height, 154.5 ± 6.9 cm) performed a Queen’s College Step Test to estimate maximal oxygen consumption. Body fat percentage was determined using a bioelectrical impedance analyzer. Hand grip strength was measured using a hand grip dynamometer, and flexibility was determined by using the sit and reach test. The mean (±standard deviation) of estimated maximal oxygen consumption was 39.5 ± 6.3 (ml.kg.min). The mean (±standard deviation) of Body fat percentage, right-hand grip strength, left-hand grip strength, and flexibility were 31.0 ±9.0 (%), 16.5±5.5 (kg), 17.1 ±4.9 (kg), and 10.6±4.8 (cm), respectively. We conclude that multiple health-related physical fitness components—with the exception of cardiorespiratory fitness—should be targeted, particularly body composition, muscle strength, and flexibility, to enhance health status among Saudi adolescent schoolgirls in Madinah. This may be accomplished by local schools, which should offer exercise programs to improve students’ physical fitness components.

scholarly journals Hand-grip Strength is Correlated with Aerobic Capacity in Healthy Sedentary Young Females

2021 ◽  
Vol 10 (1) ◽  
pp. 55-60
Author(s):  
Figen Dag ◽  
◽  
Serkan Tas ◽  
Ozlem Bolgen Cimen ◽  
◽  
...  
Keyword(s):  
Body Mass Index ◽  
Muscle Strength ◽  
Grip Strength ◽  
Body Fat ◽  
Aerobic Capacity ◽  
Fat Free Mass ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Young Females ◽  
Hand Grip

Aerobic capacity, which is the maximum limit of the rate of oxygen consumption, is an important parameter in determining health-related physical fitness. This study was conducted to investigate the relationship between grip strength and aerobic capacity in healthy sedentary young females. Forty healthy, young, and sedentary females participated in the study (20.5±1.5 years). Body composition was assessed with the bioelectrical impedance method. The hand-grip strength of the individuals was measured with a hand-grip dynamometer. An indirect graded arm crank ergometer test was used to determine the peak oxygen uptake (VO2 peak). It was found that the grip strength was correlated with height (r=0.51, p=0.001), fat-free mass (r=0.45, p=0.004), and VO2 peak (r=0.36, p=0.023); however, there was no correlation between grip strength and body weight, body mass index, and body fat percentage (p>0.05). VO2 peak was negatively correlated with body fat percentage (r= -0.38, p=0.016) and body mass index (r= -0.30, p=0.045). The results showed that higher muscle strength and fat-free mass are related to higher aerobic capacity. It is considered that increasing muscle strength and fat-free mass as well as decreasing body fat may be an appropriate strategy to increase cardiorespiratory fitness.

scholarly journals Effect of grip size and grip strength on pistol marksmanship in police officers: A pilot study

2021 ◽  
Vol 26 (1) ◽  
pp. 61-72
Author(s):  
Robin Orr ◽  
Anthony Rofe ◽  
Ben Hinton ◽  
Jay Dawes ◽  
Gianpiero Greco ◽  
...  
Keyword(s):  
Pilot Study ◽  
Grip Strength ◽  
Police Officers ◽  
Influencing Factor ◽  
Hand Grip Strength ◽  
Stationary Target ◽  
Hand Grip ◽  
Significant Relationships ◽  
Hand Size ◽  
Self Defence

Police officers may be required to use their firearms in self-defence. The purpose of this study was to evaluate the relationships between hand grip size and strength with pistol shooting accuracy in police officers. Twelve (age = 38.08 ± 6.24 years; height = 174.42 ± 7.33 cm) police officers had their hand sizes (palm width and hand span) and hand grip strength measured. Handgrip dynamometer was set at a Glock 17 pistol's grip width (50 mm). The officers fired 10 rounds from their service pistols at a stationary target. Independent samples t-tests were performed to identify differences between the sexes. Correlations were used to investigate relationships between measures of hand size, strength, and marksmanship. Alpha levels were set at p < 0.05. Male officers were significantly stronger (p = 0.01) and had a bigger hand width (p = 0.03), but not hand span. There were no significant differences in marksmanship between the sexes. Neither hand size nor grip strength had a significant impact on marksmanship even though there were strong and significant relationships between hand size (span and MCP) and grip strength. A V-shaped curve appears to exist between grip strength and marksmanship and hand span and marksmanship, with a potential influencing factor being the standard sizing of the pistol grip.

CHANGES OF BODY COMPOSITION, MUSCULAR STRENGTH AND PHYSICAL PERFORMANCE DUE TO RESISTANCE TRAINING IN OLDER PERSONS WITH SARCOPENIC OBESITY

2015 ◽  
pp. 1-7
Author(s):  
K. STOEVER ◽  
A. HEBER ◽  
S. EICHBERG ◽  
W. ZIJLSTRA ◽  
K. BRIXIUS
Keyword(s):  
Resistance Training ◽  
Grip Strength ◽  
Physical Performance ◽  
Gait Speed ◽  
Older Persons ◽  
Dynamic Strength ◽  
Hand Grip Strength ◽  
Lower Limbs ◽  
Physical Parameters ◽  
Hand Grip

Background: At present, it is unclear whether older, obese persons with or without sarcopenia respond differently to training. Furthermore, there are no differentiated recommendations for resistance training for this special target group. Objectives: The objectives are to investigate the changes in the physical parameters of older, obese men caused by training and to reappraise the modalities of resistance training for older persons. Design: Pre-test-post-test design. Participants: The participants were 33 physically inactive and obese older men (≥ 65 years, BMI ≥ 30 kg/m2), with-out severe diseases. Subjects were divided into two groups: NSAR (no or presarcopenia, n= 15) or SAR (sarcopenia, n= 18). Intervention: The intervention consisted of progressive resistance training, twice a week for 16 weeks with finally 80-85% of maximum strength and three sets with 8-12 repetitions. The training contained six exercises for the major muscle groups. Measurements: Sarcopenia was assessed using the Short Physical Performance Battery (SPPB), hand-grip strength, skeletal muscle mass index (SMI), and gait speed over a 6-meter walkway. Furthermore, the maximum dynamic strength (1 RM) was assessed. Results: At baseline, the NSAR group had significantly better values in SMI, SPPB score, hand-grip strength, and 1 RM. After training, the results in both groups displayed an increase in 1 RM at the lower limbs (NSAR 18%, SAR 38%) and the upper limbs (NSAR 12%, SAR 14%). Also, the SPPB score (NSAR 11%, SAR 15%) and the 6-m-gait speed (NSAR 5%, SAR 10%) increased. The SAR group was able to increase their right hand-grip strength by 12%, whereas the NSAR group maintained their initial high strength values. SMI did not change in both groups. Conclusions: Both groups show improvements after resistance training with slightly more benefits for men with sarcopenia. Results of this study can be used to define specific training regimens for N(SAR) subjects.

scholarly journals Anthropometric Obesity Indices, Body Fat Percentage, and Grip Strength in Young Adults with different Physical Activity Levels

2019 ◽  
Vol 4 (3) ◽  
pp. 51
Author(s):  
Söğüt ◽  
Kaya ◽  
Altunsoy ◽  
Clark ◽  
Clemente ◽  
...  
Keyword(s):  
Physical Activity ◽  
Young Adults ◽  
Grip Strength ◽  
Body Fat ◽  
Activity Level ◽  
Body Fat Percentage ◽  
Fat Percentage ◽  
Physically Active ◽  
Obesity Indices ◽  
Activity Groups

The purposes of this study were to determine whether moderately physically active (MPA) and highly physically active (HPA) male (n = 96, age = 22.5 ± 1.7 years) and female (n = 85, age = 21.3 ± 1.6 years) young adults differed in their anthropometric obesity indices (AOIs), body fat percentage (BF%), and muscular strength, and also to examine the associations between physical activity level (PAL) and the abovementioned variables. Participants were measured for body height and weight, BF%, waist and hip circumferences, and maximal isometric grip strength. According to their PAL, estimated by the short version of the International Physical Activity Questionnaire, they were assigned to MPA and HPA subgroups. Regardless of gender, results indicated that participants in the MPA groups had significantly higher values of body weight, waist and hip circumference, BF%, and BMI than participants in the HPA groups. No significant differences were found between physical activity groups in terms of grip strength. The AOIs and BF% were found to be significantly and negatively correlated with the PAL in both genders. In conclusion, the findings of the study suggest that high habitual physical activity is associated with lower adiposity markers. However, the differences in the hand grip strength of the contrasting activity groups were negligible.

scholarly journals Despite Low Obesity Rates, Body Mass Index Under-Estimated Obesity among Russian Police Officers When Compared to Body Fat Percentage

2020 ◽  
Vol 17 (6) ◽  
pp. 1937 ◽  
Author(s):  
Katie M. Heinrich ◽  
Konstantin G. Gurevich ◽  
Anna N. Arkhangelskaia ◽  
Oleg P. Karazhelyaskov ◽  
Walker S. C. Poston
Keyword(s):  
Body Mass Index ◽  
Body Composition ◽  
Body Mass ◽  
Body Fat ◽  
Police Officers ◽  
Weight Status ◽  
Bioelectrical Impedance ◽  
Accurate Method ◽  
Body Fat Percentage ◽  
Fat Percentage

In some countries, obesity rates among police officers are higher than the general public, despite physically demanding jobs. Obesity rates based on body mass index (BMI) may lack accuracy as BMI does not directly address body composition. Since data are lacking for obesity rates among Russian police officers, this study documented and compared officer obesity rates to the adult Russian population and compared the accuracy of body mass index (BMI) for obesity classification to two direct measures of body composition. Moscow region police officers (N = 182, 84% men) underwent height, weight, waist circumference (WC), and body fat percentage (BF%) bioelectrical impedance measurements during annual medical examinations. BMI-defined obesity rates were 4.6% for men and 17.2% for women, which were >3 and >1.8 times lower than Russian adults, respectively. WC-defined obesity rates were similar to BMI (3.3% for men and 10.3% for women), but BF%-defined obesity rates were much higher (22.2% for men and 55.2% for women). Although obesity rates were lower than those found among police officers in other countries, BMI alone was not a particularly accurate method for classifying weight status among Russian police officers.

scholarly journals The Influence of Upper and Lower Extremity Strength on Performance-Based Sarcopenia Assessment Tests

2018 ◽  
Vol 3 (4) ◽  
pp. 53 ◽  
Author(s):  
Michael Harris-Love ◽  
Kimberly Benson ◽  
Erin Leasure ◽  
Bernadette Adams ◽  
Valerie McIntosh
Keyword(s):  
Lower Extremity ◽  
Grip Strength ◽  
Physical Performance ◽  
Gait Speed ◽  
Grip Force ◽  
Knee Extensor ◽  
Hand Grip Strength ◽  
Strength Testing ◽  
Hand Grip ◽  
Lower Extremity Strength

The optimal management of sarcopenia requires appropriate endpoint measures to determine intervention efficacy. While hand grip strength is a predictor of morbidity and mortality, lower extremity strength may be better associated with functional activities in comparison to hand grip strength. The purpose of our study was to examine the comparative association of upper and lower extremity strength with common measures of physical performance in older adults. Thirty community-dwelling men, aged 62.5 ± 9.2 years, completed body composition analysis, quantitative strength testing, and performance-based tests of functional status. Hand grip force values were not significantly associated with knee extensor or flexor torque values (p > 0.05). Hand grip force was only associated with fast gait speed, while knee extensor torque at 60°/s was the only variable significantly associated across all functional outcome measures: customary gait speed, fast gait speed, sit to stand time, and the Physical Performance Test (p < 0.02). Hand grip strength was not a proxy measure of lower extremity strength as assessed in this study. Overall, lower extremity muscle strength values had the strongest associations with participant functional performance. Lower extremity strength testing may provide additional value as an endpoint measure in the assessment and clinical management of sarcopenia.

scholarly journals Effect of Training on Various Anthropometric and Physiological Profiles of Tribal Children in Tripura

2011 ◽  
Vol 17 (1) ◽  
pp. 45-57
Author(s):  
Swapan Kumar DEY ◽  
Sangita PAL
Keyword(s):  
Grip Strength ◽  
Body Fat ◽  
Physical Training ◽  
Hand Grip Strength ◽  
Formal Training ◽  
Control Group ◽  
Age Group ◽  
Group Iii ◽  
Hand Grip ◽  
Physiological Profiles

LANGUAGE NOTE | Document text in English; abstract also in Chinese. A proper and systematic use of physical training can enhance physiological improvement. The present study was aimed to investigate the effects of formal training programs on different physical and physiological profiles of prepubescent tribal boys at different age group. The study was conducted on 69 young boys who were divided into three subgroups i.e. Group-I (n=23, age=9.3±0.19), Group-II (n=18, age=10.1±0.86), Group-III (n=28, age=11±0.22) according to their chronological age. All the boys were inducted in Tripura sports school having formal training of 18 months. Another 64 boys were also chosen as control group (sedentary in nature) from the same community. They were also divided into three subgroups as per their respective test groups. All the boys including sedentary groups belong to similar socio-economic status and dietary habits. Tests were conducted three times in 18 months duration on test groups and twice in control groups to evaluate the height, weight, hand grip strength, body fat%, endurance ability, speed ability, explosive power of the lower extremities and hemoglobin% of all the boys. The result of the present study revealed that almost all the parameters were increased significantly in all three test groups after 18 months duration, except body fat% which was found to be changes insignificantly in group II boys. When the comparison was made among the groups, it was observed that in pre training, all the parameters were changed significantly at p<0.01 & body fat% at p<0.05 level except 800m run and standing broad jump (SBJ) respectively. Significant differences were also observed following 18 months of training in height, hemoglobin percent, 800m run at the level of p< 0.05 and weight, hand grip strength, 30m flying start, aerobic capacity, SBJ at p<0.01 levels, except body fat% which was found to be statistically insignificant. All the parameters were found to be more in Test group-III as compared to other two groups. Prior to training no such significant differences were observed in above parameters with respect to control group. Following 18 months of training, a significant difference was found with respect to control group in all parameters except height, weight (Gr-I & Gr- II) & body fat%. However the increase in above anthropometric and physiological parameters may only because of the augmenting effect of training or due merely because of their growth & development. It has been reported that moderate physical training is necessary for normal growth & development and it is more pronounced in the subject who belongs at the trigger point of adolescence. So it may be concluded that under same nutritional status the effect of formal training is more effective in higher age group as compared to the lower age group. 本文旨在探討印度部落兒童，透過運動訓練而影響的體型及生理變化。邀請了69名兒童進行評估及比較，結果顯示: 大部份體型及生理指標有明顯的增長。

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