Estimation of Lower Body Muscle Power from Vertical Jump in Youth

Mahar, Matthew T.; Welk, Gregory J.; Janz, Kathleen F.; Laurson, Kelly R.; Zhu, Weimo; Baptista, Fátima

doi:10.1080/1091367x.2022.2041420

Cited by 12 publications

(14 citation statements)

References 42 publications

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“…Lower-limb muscle strength is a determinant factor of downhill running performance [ 37 ]. The analysis of vertical jump height and 1-RM at the leg press are widely used methods for evaluating the muscle strength expressed by the lower limbs [ 28 , 29 ]. Interestingly, no changes in both parameters were found among the three groups after the 6-week training period.…”

Section: Discussionmentioning

confidence: 99%

“…The vertical jump height performed through counter movement jump test was assessed by Optojump Next (Microgate, Italy) in UP, DOWN, and CON [ 28 ]. The one-repetition maximum (1-RM) at the leg press (Technogym, Italy) was estimated using the methodology developed by Brzycki [ 29 ] after performing several (eight to ten) repetitions to fatigue in UP, DOWN, and CON.…”

Section: Methodsmentioning

confidence: 99%

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Uphill versus downhill high-intensity training effectiveness in preserving vascular function and exercise performance in runners who reduce their regular endurance training

et al. 2022

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Purpose The COVID-19 restrictions have limited outdoor physical activities. High-intensity training (HIT) may be a valid indoor alternative. We tested whether an indoor HIT is effective in maintaining vascular function and exercise performance in runners who reduce their usual endurance training, and whether a downhill HIT is as effective as an uphill one for such purposes. Methods Sixteen runners performed the same 6-week HIT either uphill (UP, eight runners) or downhill (DOWN, eight runners). Eight runners continuing their usual endurance training acted as a control group (CON). The following data were collected before vs after our HIT: vascular conductance during rapid leg vasodilation to assess vasodilation capacity; V̇O 2max through running incremental test to exhaustion; 2000 m running time; neuromuscular indexes related to lower-limb muscle strength. Results Both uphill and downhill HIT failed in maintaining the pre-HIT leg vasodilation capacity compared to CON, which was, however, blunted more after uphill than downhill HIT. V̇O 2max and 2000 m time were similar after downhill HIT compared to CON, and augmented after uphill HIT compared to CON and DOWN. Indexes of lower-limb muscle strength were similar before vs after HIT and among groups. Conclusion Our HIT was ineffective in maintaining the pre-HIT leg vasodilation capacity compared to runners continuing their usual low-intensity endurance training, but did not lead to reductions in V̇O 2max , 2000 m time performance, and indexes related to lower-limb muscle strength. Our data show an appealing potential for preserving exercise performance with low cardiorespiratory effort via downhill running.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Uphill versus downhill high-intensity training effectiveness in preserving vascular function and exercise performance in runners who reduce their regular endurance training

et al. 2022

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“…The score was the vertical distance between the two chalk marks. Participants' scores were converted into VJP values using a regression equation [15]. Each participant was given two trials and the best recorded to the nearest centimeter.…”

Section: Leg Power Testingmentioning

confidence: 99%

Association of Fatness and Leg Power with Blood Pressure in Adolescents

Musa¹,

Iornyior²,

Tyoakaa³

2022

Weight Management - Challenges and Opportunities

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This cross-sectional study examined the independent and joint association of fatness and leg power (LP) with resting blood pressure (BP) in adolescents (12 to 15 years) in Benue state of Nigeria. The present study comprised 2047 adolescents, including 1087 girls. Participants were assessed for body mass index (BMI), LP, and resting BP. Multivariate regression models assessing the associations of the independent variables with BP were conducted. Fatness and LP were independent predictors of resting BP among participants and the relationship of LP with BP was more robust in girls than boys. Combined fatness and LP in predicting BP was modest (R2 = 10.4–14.3%) after controlling for maturity status. Low LP was associated with systolic blood pressure (SBP) in both girls (R2 = 9.0%, β = 0.260, p = 0.001) and boys (R2 = 11.0%, β = 0.226, p = 0.001). In the model for diastolic blood pressure (DBP), only fatness was associated with BP in girls (p = 0.001). The odd of hypertension (HTN) risk among overweight girls was 2.6 times that compared to their healthy-weight peers. Girls with low LP were 0.40 times more likely to develop HTN risk compared to their counterparts with high LP. This study has demonstrated that lower body muscle power is more important than fatness in predicting HTN in adolescent boys and girls.

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“…Previous studies evaluating the association of muscular fitness with cardiometabolic disease risks in youth either used standing long jump or FitnessGram test battery (which included standing long jump as the only test of lower extremity muscular fitness) while vertical jump test which is considered a more robust test of muscular fitness or power (Mahar et al, 2022) was rarely used (Buchan et al, 2015). Furthermore, previous studies investigating this problem were conducted among children from high income countries with advantages of better nutrition and health care than African children.…”

Section: Introductionmentioning

confidence: 99%

Cardiorespiratory Fitness and Leg Muscle Power in Relation to Abdominal Adipose Tissue in Adolescents

Musa

Toriola

Abubakar

et al. 2023

IJKSS

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Background: Abdominal adiposity is associated with high risk of cardiometabolic diseases. Waist circumference has been used as a surrogate measure of abdominal adipose tissue in both youth and adults. Objectives: The present study evaluated whether cardiorespiratory fitness and leg power (LP) were independently associated with abdominal adipose tissue in 12-16-year-old Nigerian adolescents. Methods: This cross-sectional study comprised 2047 (1087 girls and 960 boys) adolescents who were evaluated for cardiorespiratory fitness and leg power. The cardiorespiratory fitness and leg power were assessed using the progressive cardiovascular endurance run (PACER) test and the vertical jump (VJ) test, respectively. Abdominal adiposity was evaluated with the waist circumference (WC). Regression models controlling for age and maturity status were used to assess the association of fitness and LP with WC. Results: Low leg power had significant negative association with the risk of abdominal adiposity in both girls (β=-0.307; p0.001) and boys (β=-0.262; p0.001). The observed relationship was independent of fitness, whereas the relationship between fitness and risk of abdominal adiposity was partly determined by leg power. Conclusion: Leg power and fitness were independently associated with the risk of abdominal adiposity in adolescents, but the association of leg power was stronger in girls. Health promotion efforts targeting reduction of abdominal adipose tissue should also include muscular power training type activities in addition to endurance-related activities.

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Estimation of Lower Body Muscle Power from Vertical Jump in Youth

Cited by 12 publications

References 42 publications

Uphill versus downhill high-intensity training effectiveness in preserving vascular function and exercise performance in runners who reduce their regular endurance training

Uphill versus downhill high-intensity training effectiveness in preserving vascular function and exercise performance in runners who reduce their regular endurance training

Association of Fatness and Leg Power with Blood Pressure in Adolescents

Cardiorespiratory Fitness and Leg Muscle Power in Relation to Abdominal Adipose Tissue in Adolescents

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