Key result
A 10-week Nordic Hamstring exercise program significantly decreased bilateral hamstring strength imbalance (to 4.63%, p<0.05) and increased vertical jump height (to 35.93 cm, p<0.05).
Why the study?
Does a 10-week Nordic Hamstring exercise program improve bilateral muscle strength imbalance and vertical jump height in female rugby union players?
Does a 10-week Nordic Hamstring exercise program improve bilateral muscle strength imbalance and vertical jump height in female rugby union players?
A 10-week Nordic Hamstring exercise program significantly improves bilateral hamstring strength imbalance and dynamic lower body performance in female rugby union players.
May support Nordic hamstring training to reduce imbalance in female rugby players; hypothesis-generating for jump gains, needing RCTs before practice change.
The aim of this study was to evaluate the effect of an eccentric hamstring specific training programme on the percentage of bilateral muscle strength imbalance and maximal vertical jump height. Twenty-four, injury free female rugby union players took part in this study. Participants were split into two groups; intervention group (Nordic Hamstring (NH) (n = 13) and control group (n = 11)). Both groups completed normal training; the NH group completed a concurrent NH programme for 10 weeks. Pre and post-training concentric/concentric isokinetic testing of peak torque was performed for hamstrings of both legs at 60 ◦ /s. Vertical jump height was also assessed. In the NH group, there was a significant decrease in mean percentage bilateral hamstring strength imbalance (pre = 10.39 ± 3.53, post = 4.63 ± 2.81, p< 0.05). There was also a significant increase in vertical jump height for the NH group (pre = 31.22 ± 4.8 cm, post = 35.93 ± 4.5 cm, p< 0.05). The NH programme caused favourable adaptations to bilateral hamstring strength imbalance and dynamic lower body performance. A programme based on NH exercise is potentially an effective preventive and rehabilitation tool for hamstring injury.
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Anastasi et al. (2011) studied Healthy athletes (n=24). Nordic Hamstring exercise program vs. Normal training was evaluated on Percentage of bilateral muscle strength imbalance and maximal vertical jump height (p=< 0.05). A 10-week Nordic Hamstring exercise program significantly decreased bilateral hamstring strength imbalance (to 4.63%, p<0.05) and increased vertical jump height (to 35.93 cm, p<0.05).
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