Logo image
Back
Postural Movement – Quantifying Timing of Joint and Segment Coordination, Structural Muscle Balance, and Joint Range of Motion
Dissertation   Open access

Postural Movement – Quantifying Timing of Joint and Segment Coordination, Structural Muscle Balance, and Joint Range of Motion

Mark McKean
University of the Sunshine Coast, Queensland
Doctor of Philosophy, University of the Sunshine Coast
2009
DOI:
https://doi.org/10.25907/00608
pdf
PDF - Thesis2.51 MBDownloadView
Thesis PDF - Thesis Open Access

Abstract

joint coordination muscle balance strength ration flexibility squat technique knee movement movement pattern lumbar angle lumbar flexion ROM Pull:Push ratio
To ensure an exercise is safe and effective requires an integrated relationship between posture and joint coordination. A change in postural alignment can naturally result in a change in the motor pattern for both simple and athletic tasks, and in some cases in the performance of the skill. There is limited scientific knowledge that objectively quantifies the structural balance between the muscles that create movement and those that stabilise, the possible range of movements, and the timing of these movements. To address this limitation the research followed two themes. Firstly to investigate the timing and movement aspect, the lower limb dominant activity of squatting was chosen as this activity included movements of the lumbar, sacrum, thighs, and shank. Two specific research questions were developed as follows. *1. What are the timing and movement relationships for the hip and knee joints when the back squat exercise is performed; and do these relationships alter due to changes in load, phase and gender? *2. What are the timing and movement relationships for the lumbar and sacrum segments the back squat exercise is performed; and do these relationships alter due to changes in stance, phase and gender. To extend this postural movement knowledge further the second theme investigated the influence of structural muscle balance and joint range of motion. To investigate this theme, the upper body dominant activity of kayaking was chosen as this activity included use of the pelvis, trunk and the mobile shoulder girdle. The two specific research questions for this theme were as follows: *1. What are the muscle balance, muscle function, range of movement, and shoulder stabiliser strength relationships with the race performance time for elite kayakers? *2. What are the structural strength relationships for the dominant agonistic shoulder muscles in elite kayakers; and do these relationships influence performance?

Details

Metrics

2051 File views/ downloads
2862 Record Views
Logo image