Abstract
Abstract
Purpose
To examine the test re-test reliability of isometric maximal voluntary contractions (MVC) of hip adduction (ADD
ISO
), hip abduction (ABD
ISO
), and multijoint leg extension (SQUAT
ISO
) in sub-elite female Australian footballers.
Methods
Data were collected from 24 sub-elite female Australian footballers (age 22.6 ± 4.5 years; height 169.4 ± 5.5 cm; body mass 66.6 ± 8.0 kg; 4.5 ± 4.4 years sport-specific training; 2.5 ± 2.0 years unstructured resistance training) from the same club on two non-consecutive days. Participants performed three isometric MVCs of ADD
ISO
, ABD
ISO
, and SQUAT
ISO
. The SQUAT
ISO
was performed at 140° knee flexion with a vertical trunk position and ADD
ISO
and ABD
ISO
measures were performed in a supine position at 60° of knee flexion and 60° hip flexion. Reliability was assessed using paired
t
tests and the intraclass correlation coefficient (ICC) with 95% confidence intervals (CI), typical error (TE), and coefficient of variation (CV%) with 95% CI.
Results
SQUAT
ISO
peak force (ICC .95; CV% 4.1), ABD
ISO
for left, right, and sum (ICC .90–.92; CV% 5.0–5.7), and ADD
ISO
for left, right, and sum (ICC .86–.91; CV% 6.2–6.9) were deemed acceptably reliable based on predetermined criteria (ICC ≥ .8 and CV% ≤ 10).
Conclusion
SQUAT
ISO
, ABD
ISO
, and ADD
ISO
tests demonstrated acceptable reliability for the assessment of peak force in sub-elite female Australian footballers, suggesting these assessments are suitable for muscle strength testing and monitoring adaptations to training.