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Related Experiment Video

Updated: Oct 2, 2025

Muscle Imbalances: Testing and Training Functional Eccentric Hamstring Strength in Athletic Populations

Muscle Imbalances: Testing and Training Functional Eccentric Hamstring Strength in Athletic Populations

Published on: May 1, 2018

Development of a Novel Nordic Hamstring Exercise Performance Test Device: A Reliability and Intervention Study.

Jesper Augustsson¹, Sofia Ryman Augustsson¹

¹Department of Sport Science, Faculty of Social Sciences, Linnaeus University, 39182 Kalmar, Sweden.

Sports (Basel, Switzerland)

|February 24, 2022

Summary

A new Nordic hamstring exercise (NHE) device reliably measures performance. A 10-week low-volume NHE program significantly improved hamstring exercise performance in female football players.

Keywords:

athletic performance hamstring muscles resistance training soccer soft tissue injuries

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Area of Science:

Sports Medicine
Biomechanics
Exercise Physiology

Background:

The Nordic hamstring exercise (NHE) is recognized for its potential in preventing hamstring injuries.
Developing reliable methods to assess NHE performance is crucial for training and injury prevention programs.

Purpose of the Study:

To develop and validate a novel device for measuring NHE performance.
To assess the test-retest reliability of the new NHE device.
To determine the effectiveness of a low-volume, 10-week NHE training program on NHE performance.

Main Methods:

A new NHE test device was developed, measuring eccentric and concentric phases from a kneeling position with ankles secured.
Test-retest reliability was assessed across three separate testing occasions in 20 female football players (aged 16-30).
Fourteen players participated in a 10-week program involving one set of five repetitions of the NHE weekly.

Main Results:

The NHE test device demonstrated high reliability, with an intra-class correlation coefficient of 0.95 and a coefficient of variation of 3.54%.
No significant differences in NHE performance were found between test occasions.
A mean improvement of 22% (8.7 cm) in NHE performance was observed after the 10-week training program (p = 0.005).

Conclusions:

The novel NHE test device is reliable and practical for use in various settings.
A low-volume NHE program (1 set of 5 repetitions weekly) is effective in improving NHE performance.
This suggests that even minimal NHE training can enhance hamstring exercise capacity, potentially aiding in injury prevention.