Abstract
Isokinetic dynamometry is the clinical gold standard for strength assessment but testing protocols and outcome metrics can lack functional relevance. To quantify the influence of dynamometer configuration on eccentric hamstring strength metrics, 23 trained participants completed isokinetic eccentric knee flexor trials at 180º·s-1 in a seated and extended hip position. The extended position elicited greater peak torque (P=0.04) which was achieved at a significantly (P<0.001) greater degree of knee flexion. Isokinetic range and functional range (defined as 85% of peak torque) were consistent at ~44º and ~21º respectively across trials, but were achieved with a more flexed knee in the extended hip configuration. Therefore, whilst the extended hip configuration might better reflect the bi-articular nature of the hamstring musculature and the mechanism of hamstring strain injury, the sensitivity of strength metrics to configuration has implications for clinical assessment and training adaptations.
Original language | English |
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Journal | Research in Sports Medicine |
Early online date | 31 May 2022 |
DOIs | |
Publication status | E-pub ahead of print - 31 May 2022 |
Keywords
- isokinetic dynamometer
- eccentric hamstring
- strength curve
- isokintetic testing
- eccentric exercise
- hamstrings
- rehabilitation
Research Groups
- Sports Injuries Research Group