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Does leg predomination affect measuring vasti muscle onsets during single leg squatting? A reliability study
Javid Mostamand1, Dan L Bader2, Zoë Hudson3
1Musculoskeletal Research Centre, Faculty of Rehabilitation Sciences, Isfahan University of Medical Sciences, PO Box: 164, Isfahan, 8174673461, Iran.
Journal of Bodywork and Movement Therapies
|October 18, 2017
Summary
Leg dominance does not influence VMO-VL muscle onset measurements during single leg squats. However, the reliability of these measurements is poor for both dominant and non-dominant legs in healthy individuals.
Area of Science:
- Biomechanics
- Kinesiology
- Sports Medicine
Background:
- Assessing vasti muscle onset in patellofemoral pain syndrome (PFPS) may link pain relief to altered muscle activation.
- Investigating the influence of leg dominance on the reliability of VMO-VL muscle onset measurement is crucial for accurate clinical assessment.
Purpose of the Study:
- To evaluate the impact of leg dominance on the reliability of VMO-VL muscle onset measurement.
- To assess VMO-VL muscle onset during single leg squatting in healthy subjects.
Main Methods:
- Ten healthy subjects with a dominant right leg performed single leg squats.
- VMO and VL muscle onsets were recorded on both legs across three sessions with a minimum one-week interval.
- Intraclass correlation coefficients (ICC) were calculated to determine measurement reliability.
Main Results:
- No significant difference was found in VMO-VL onset mean values between the right and left knees.
- Poor reliability (low ICC values) was observed for VMO-VL onset measurements within and between sessions for both legs.
Conclusions:
- Leg dominance does not affect VMO-VL muscle onset measurements during single leg squats.
- The VMO-VL muscle onset measurement during single leg squats exhibits low intratester reliability, limiting its clinical applicability for assessing muscle activation patterns.
