Lower-body Muscular Power and Exercise Tolerance Predict Susceptibility to Enemy Fire during a Tactical Combat Movement Simulation

Ergonomics ◽  
2022 ◽  
pp. 1-26
Author(s):  
Jesse A. Stein ◽  
Timothy C. Hepler ◽  
Justin A. DeBlauw ◽  
Cassandra M. Beattie ◽  
Chaddrick D. Beshirs ◽  
...  
Keyword(s):  
Exercise Tolerance ◽  
Lower Body ◽  
Muscular Power ◽  
Movement Simulation

Active Dehydration Impairs Upper and Lower Body Anaerobic Muscular Power

2008 ◽  
Vol 22 (2) ◽  
pp. 455-463 ◽  
Author(s):  
Leon C Jones ◽  
Michelle A Cleary ◽  
Rebecca M Lopez ◽  
Ron E Zuri ◽  
Richard Lopez
Keyword(s):  
Lower Body ◽  
Muscular Power

scholarly journals A 47-Year Comparison of Lower Body Muscular Power in Spanish Boys: A Short Report

2020 ◽  
Vol 5 (3) ◽  
pp. 64
Author(s):  
Iván Chulvi-Medrano ◽  
Manuel Pombo ◽  
Miguel Ángel Saavedra-García ◽  
Tamara Rial Rebullido ◽  
Avery D Faigenbaum
Keyword(s):  
Body Mass Index ◽  
Body Mass ◽  
Vertical Jump ◽  
Temporal Trends ◽  
Short Report ◽  
Lower Body ◽  
Muscular Power ◽  
Old Spanish ◽  
Standing Long Jump ◽  
Long Jump

Much of the evidence examining temporal trends in fitness among youth has found a decrease in measures of muscular strength and muscular power over recent decades. The aim of this study was to examine trends in lower body muscular power in Spanish boys over 47 years. In 1969 140 boys (10–11 years; body mass index = 19.24, SD = 2.91 kg/m2) and in 2016, 113 boys (10–11 years; body mass index = 19.20, SD = 3.15 kg/m2) were recruited. Lower body power was assessed using the vertical jump (VJ) and standing long jump (SLJ) tests. Significant differences and a large effect size were shown between groups in the SLJ (p = 0.001; d = 0.94) and the VJ (p = 0.001; d = 0.66). SLJ data in 1969 were higher (1.52 m, SD = 0.19) when compared to the 2016 data (1.34 m, SD = 0.18). The VJ performance of the 1969 sample was also higher (25.95 cm; SD = 6.58) than the 2016 sample (21.56 cm; SD = 4.72). SLJ and VJ performance of the 2016 group decreased 11.8% and 16.9%, respectively. There were no significant differences between groups in body mass index. The results indicate a secular decline in lower body muscular power in 10–11-year-old Spanish boys with no significant changes in body mass index over the 47-year study period.

scholarly journals EFFECT OF HIGH AND LOW FLEXIBILITY ON AGILITY, ACCELERATION SPEED AND VERTICAL JUMP PERFORMANCE OF VOLLEYBALL PLAYERS

2021 ◽  
Vol 6 (11) ◽  
Author(s):  
Aruna Gulati ◽  
Rita Jain ◽  
Anuradha Lehri ◽  
Rajneesh Kumar
Keyword(s):  
Vertical Jump ◽  
Training Programme ◽  
Lower Body ◽  
Muscular Power ◽  
Cross Sectional ◽  
Jump Performance ◽  
Arm Swing ◽  
Significant Difference ◽  
Volleyball Players ◽  
High Flexibility

This study aimed to assess the effect of high and low levels of flexibility on key performance indicators of volleyball performance. Eighty-four volleyball players (n=84; mean±SD; decimal age: 16.57±1.51; height (cm): 176.23±8.77; body mass (kg): 66.14±11.79) were selected for the study. The design of the study was cross-sectional and to measure selected variables i.e. agility, lower body muscular power, and acceleration speed; 6×10 m shuttle run, countermovement jump (with arm swing) test and 20 m sprint test (standing start) were used. To measure the flexibility level of the players, sit and reach test was used. Shapiro-Wilk normality test was conducted to check the distribution of data and the Levine test was applied to check homogeneity of the variance in data. Participants were divided into two groups i.e. High Flexibility Group (HFG) and Low Flexibility Group (LFG) using k-means cluster analysis and independent t-test was applied to find the differences between HFG and LFG. The level of significance was set at p < 0.05. Results showed statistically significant difference between HFG and LFG in agility, acceleration speed and lower body muscular power and, based on the results, it was concluded coaches should include flexibility training in the regular training programme. The results obtained supported the rationale that baseline flexibility may influence the performance of volleyball players. <p> </p><p><strong> Article visualizations:</strong></p><p><img src="/-counters-/edu_01/0778/a.php" alt="Hit counter" /></p>

Reliability and Validity of Tests to Assess Lower-Body Muscular Power in Children

2015 ◽  
Vol 29 (8) ◽  
pp. 2277-2285 ◽  
Author(s):  
Jorge R. Fernandez-Santos ◽  
Jonatan R. Ruiz ◽  
Daniel D. Cohen ◽  
Jose L. Gonzalez-Montesinos ◽  
Jose Castro-Piñero
Keyword(s):  
Reliability And Validity ◽  
Lower Body ◽  
Muscular Power ◽  
Validity Of Tests

scholarly journals The Effects of an Eight Week Plyometric-based Program on Motor Performance Skills and Muscular Power in 7–8-Year-Old Primary School Students

2021 ◽  
Vol 9 (4) ◽  
pp. 1
Author(s):  
Andrew Sortwell ◽  
Michael Newton ◽  
Daniel A. Marinho ◽  
Ricardo Ferraz ◽  
Dana Perlman
Keyword(s):  
Physical Education ◽  
Primary School ◽  
Motor Performance ◽  
Comparison Group ◽  
Lower Body ◽  
Muscular Power ◽  
Primary School Students ◽  
Strength Index ◽  
School Students ◽  
Performance Skills

Background of Study: Competence in motor performance skills is important in enabling children to be physically literate. Plyometric-based training has been suggested as an effective means to enhance motor performance skills in young athletes. However, no studies have reported the effects of a whole body plyometric-based program integrated into physical education on motor performance skills with young children. Objective: This study aims to examine the effect of a plyometric-based program on primary school students’ motor performance skills, upper and lower body muscular power, and reactive strength index. Method: The sample was composed of 61 primary school students, 29 girls and 32 boys, aged 7–8 years old, from two second-grade Physical Education (PE) classes. Both groups participated in their regular eight-week PE lessons (50-minute classes twice a week). During the study, the plyometric group performed a plyometric-based program in the 15-minute warmup of each class, while the comparison group performed regular warmup activities. Student’s motor performance skill proficiency, reactive strength index, lower and upper body muscular power were assessed before and after the eight weeks of PE lessons. The data were analysed using a two-way analysis of variance, followed by pairwise comparisons with the Bonferroni adjustment. Results: The data analysis indicated significant increases in motor performance skill proficiency, upper and lower body muscular power in the plyometric group vs comparison group (p ≤ 0.05). Conclusion: These results suggest that including a plyometric-based program in the PE warmup phase of the lessons may improve motor performance skills and muscular power in primary school students.

Influence of Rest Interval Duration on Muscular Power Production in the Lower-Body Power Profile

2013 ◽  
Vol 27 (10) ◽  
pp. 2723-2729 ◽  
Author(s):  
Maria L. Nibali ◽  
Dale W. Chapman ◽  
Robert A. Robergs ◽  
Eric J. Drinkwater
Keyword(s):  
Power Production ◽  
Lower Body ◽  
Interval Duration ◽  
Rest Interval ◽  
Muscular Power ◽  
Power Profile ◽  
Lower Body Power

Evaluation of Anthropometric, Physiological, and Skill-Related Tests for Talent Identification in Female Field Hockey

2003 ◽  
Vol 28 (3) ◽  
pp. 397-409 ◽  
Author(s):  
Justin W.L. Keogh ◽  
Clare L. Weber ◽  
Carl T. Dalton
Keyword(s):  
Handgrip Strength ◽  
Field Testing ◽  
Physical Parameters ◽  
Lower Body ◽  
Muscular Power ◽  
Field Hockey ◽  
Talent Identification ◽  
Accuracy Test ◽  
Hockey Players ◽  
Sprinting Speed

The purpose of the present study was to develop an effective testing battery for female field hockey by using anthropometric, physiological, and skill-related tests to distinguish between regional representative (Rep, n = 35) and local club level (Club, n = 39) female field hockey players. Rep players were significantly leaner and recorded faster times for the 10-m and 40-m sprints as well as the Illinois Agility Run (with and without dribbling a hockey ball). Rep players also had greater aerobic and lower body muscular power and were more accurate in the shooting accuracy test, p < 0.05. No significant differences between groups were evident for height, body mass, speed decrement in 6 × 40-m repeated sprints, handgrip strength, or pushing speed. These results indicate that %BF, sprinting speed, agility, dribbling control, aerobic and muscular power, and shooting accuracy can distinguish between female field hockey players of varying standards. Therefore talent identification programs for female field hockey should include assessments of these physical parameters. Key words: fitness profile, field testing, women, team sport

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