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The Validity of the Nordic Hamstring Lower for a Field-Based Assessment of Eccentric Hamstring Strength.
- Source :
-
Journal of Sport Rehabilitation . Feb2015, Vol. 24 Issue 1, p13-20. 8p. 1 Black and White Photograph, 1 Chart, 4 Graphs. - Publication Year :
- 2015
-
Abstract
- 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, r2 = 65%, P < .00001). However, there was a weak relationship observed (r = .480, r2 = 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. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MUSCLE strength testing
*KNEE physiology
*TORQUE
*HAMSTRING muscle physiology
*ANTHROPOMETRY
*STATISTICAL correlation
*EXERCISE physiology
*ISOKINETIC exercise
*RANGE of motion of joints
*RESEARCH methodology
*MUSCLE contraction
*MUSCLE strength
*PROBABILITY theory
*RESEARCH
*SOCCER
*T-test (Statistics)
*VIDEO recording
*STATISTICAL power analysis
*CROSS-sectional method
*RESEARCH methodology evaluation
*DATA analysis software
*DESCRIPTIVE statistics
RESEARCH evaluation
Subjects
Details
- Language :
- English
- ISSN :
- 10566716
- Volume :
- 24
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Journal of Sport Rehabilitation
- Publication Type :
- Academic Journal
- Accession number :
- 100677732
- Full Text :
- https://doi.org/10.1123/JSR.2013-0097