Reliability of concentric ankle dorsiflexion fatigue testing.
The purpose of this study was to determine the reliability of an isokinetic test for ankle dorsiflexion fatigue on a Biodex dynamometer. Young (21 to 32 years), recreationally active men (n = 10) and women (n = 10) performed 50 concentric (60 degrees.s-1) dorsiflexion contractions, on two different occasions. Total work (TW), losses in work (work fatigue; WF), as well as relative losses in peak toruqe, an example being "3-3" which compared the first three to last three repetitions, were measured. The intra-class correlation coefficients (ICC2.1) and coefficients of variation (CV), as well as the Bland-Altman plots and analyses showed that the variables using peak torque and TW were more reliable than WF, with WF having a CV of 11.3% and the best peak torque variable, 3-3, having a CV of 5.6%. In conclusion, ankle dorsiflexion fatigue can be reliably assessed on a Biodex dynamometer.
Faculty of Physical Education and Recreation Studies, University of Manitoba, Winnipeg, Manitoba.
Michelle M
MM
Porter
Anna Maria
AM
Holmbäck
Jan
J
Lexell
D000328:Adult; D000842:Ankle / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D009119:Muscle Contraction; D018763:Muscle Fatigue; D010807:Physical Endurance / Q000502:physiology; D016059:Range of Motion, Articular; D015203:Reproducibility of Results; D019415:Torque