A kinematic analysis of the angle of the trunk in the sagittal plane, under manipulated striking patterns and footwear conditions.
Cardiff Metropolitan University
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Aim: This study aims to further understand the flexion/extension of the trunk in the sagittal plane throughout the stance phase of a running stride for different striking pattern and footwear conditions in relation to injury. Background: An increase in participation in the sport of running is resulting in an increase in a variety of injuries, most commonly overuse injuries. It’s important to understand the mechanics of the body as a whole in order to minimise injury risk. There is a considerable understanding of the kinematics of the trunk flexion/extension in running gait; however the stance phase is rarely divided and discussed specifically. It is hypothesised that a forefoot striking pattern will cause a more flexed trunk angle than rear foot at every stage of the stance phase. Method: Nine male endurance athletes of age 21 years old (± 1.5), height 179.1 cm (± 6.19) and body mass 68.42kg (± 8.17) performed repeated 60m trials where joint angles were measured using CODA motion software. They performed 4 barefoot and 4 shod trials, where 2 of each were run with a forefoot strike and 2 with a rearfoot strike. Results: The comparison between forefoot strike and rearfoot strike presented significant differences (p < 0.05) in trunk angle under every measured point of the stance phase. Comparisons between shod and barefoot data demonstrated significant differences only during the mid-stance (p = 0.035) and at the maximum angle (p = 0.042) of the stance phase. The initial contact provided the minimum angle for all trials under all conditions, whilst the occurrence of the maximum angle was seen to be individual-dependant. Conclusion: Footwear and striking pattern conditions are seen to influence the flexion/extension trunk in the sagittal plane during the stance phase, suggesting that proximal manipulations result in distal changes. The hypothesis that a more flexed trunk angle would be seen for a forefoot strike than a rearfoot strike at every stage of the stance phase was rejected.
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A kinematic analysis of the angle of the trunk in the sagittal plane, under manipulated striking patterns and footwear conditions. Thomas, Zoe (Cardiff Metropolitan University, 2015)This study aims to further understand the flexion/extension of the trunk in the sagittal plane throughout the stance phase of a running stride for different striking pattern and footwear conditions in relation to injury. ...
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