Comparison of Static Stretching on Whole Body Vibration and Strength Training for Improving and Maintaining Hamstring Range of Motion

Abstract

Background: Hamstring strains are prevalent among individuals engaged in sports and recreational activities. Addressing this, static stretching, whole-body vibrations (WBV), and strength training are recognized for enhancing range of motion (ROM) and reducing muscle injury risks. However, the comparative effectiveness of these modalities on hamstring flexibility and ROM requires further exploration. Objective: The primary objective of this study was to investigate the effects of static stretching combined with whole-body vibrations and strength training on improving and maintaining hamstring range of motion. Methods: This crossover randomized control trial in Karachi involved 44 participants aged 18-25 years, actively participating in various recreational activities. Participants were randomly divided into two groups: one underwent static stretching on whole-body vibration, and the other received strength training. The interventions lasted four weeks, with pre- and post-intervention assessments of active and passive range of motion (AROM and PROM). Data analysis was conducted using SPSS version 23.0. Results: The static stretching with whole-body vibration group showed an increase in AROM from a pre-intervention mean of 131.05° to a post-intervention mean of 136.55°, and in PROM from 131.67° to 137.41°. The strength training group exhibited an increase in AROM from a pre-intervention mean of 135.21° to 142.42°, and in PROM from 135.98° to 144.81°. Both interventions demonstrated statistically significant improvements in hamstring ROM. Conclusion: The study demonstrates that both static stretching on whole-body vibration and strength training are effective in enhancing the flexibility and range of motion of hamstrings. These findings suggest their beneficial incorporation in rehabilitation and athletic training programs.