Search Results

You are looking at 1 - 1 of 1 items for

  • Author: Ellena Turner x
Clear All Modify Search
Restricted access

Emma Sconce, Paul Jones, Ellena Turner, Paul Comfort and Philip Graham-Smith

Context:

Hamstring injury-risk assessment has primarily been investigated using isokinetic dynamometry. However, practical issues such as cost and availability limit the widespread application of isokinetics for injury-risk assessment; thus, field-based alternatives for assessing eccentric hamstring strength are needed.

Objective:

The aim of this study was to investigate the validity of the angle achieved during Nordic hamstring lowers (break-point angle) as a field-based test for eccentric hamstring strength.

Design:

Exploratory study.

Setting:

Laboratory.

Participants:

Sixteen male (n = 7) and female (n = 9) soccer players (mean ± SD age 24 ± 6 y, height 1.77 ± 0.12 m, and body mass 68.5 ± 16.5 kg) acted as subjects for the study.

Main Outcome Measures:

The authors explored relationships between the Nordic break-point angle (the point at which the subject can no longer resist the increasing gravitational moment during a Nordic hamstring lower) measured from video and isokinetic peak torque and angle of peak torque of right- and left-knee flexors.

Results:

The results revealed a meaningful relationship between eccentric knee-flexor peak torque (average of right and left limbs) and the Nordic break-point angle (r = −.808, r 2 = 65%, P < .00001). However, there was a weak relationship observed (r = .480, r 2 = 23%, P = .06) between break-point angle and the angle of peak torque (average of right and left limbs).

Conclusions:

The results suggest that the break-point angle achieved during Nordic hamstring lowers could be used as a field-based assessment of eccentric hamstring strength.