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Updated: Sep 24, 2025
Lower Limb Biomechanical Analysis of Healthy Participants
Published on: April 15, 2020
Correlation between lower limb and trunk muscle endurance with drop vertical jump in the special military forces
Daniel Sousa da Silva1, Ranne M C Sousa2, Jeffrey M Willardson3
1Lato Sensu Postgraduate Program in Strength Training, Universidade Federal do Rio de Janeiro, Brazil; Kinesiology Research Group Applied to Strength Training, São José University Center, RJ, Brazil.
Objective:
Police officers, particularly the ones who are trained to be on "special forces", perform a wide range of hazardous and physically demanding activities when aiming to protect and serve. The purpose of this study was to investigate the association between lower limb and trunk muscle endurance with drop vertical jump (DVJ) height in a special military police force.
Methods:
One hundred and three male military men (age: 36 ± 5.0 years; height: 1.76 ± 0.05 m; weight: 81.8 ± 9.7 kg) volunteered to take part in this study.
Six Tests Were Performed:
DVJ, McGill core battery (trunk flexion, trunk extension, and side bridge test-right and left), and single-leg squat repetitions. Correlations were analyzed using the Pearson correlation coefficient (r). The level of significance for all analyses was set at p ≤ 0.05.
Results:
Single-leg squat repetitions were positively associated with DVJ height, contact time and flight time (p = 0.00093∗∗, p = 0.00085∗∗, and p = 0.00098∗∗ respectively). No correlation was observed between trunk muscle endurance and DVJ.
Conclusion:
Therefore, it was concluded that greater endurance of the lower limb muscles, as demonstrated by the single leg squat, was associated with better performance in a DVJ. Individuals should consider incorporating single leg squats into their fitness program to develop muscular endurance and possibly perform better in the DVJ.
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