Years of running does not influence kinematics and kinetics

NewsBot · Dec 20, 2017

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Experience does not influence injury-related joint kinematics and kinetics in distance runners
Cristine E. Agresta et al
Gait and Posture; Article in Press

Highlights
•Years of running experience did not influence joint kinematics.
•Year of running experience did not influence vertical ground reaction forces.
•Year of running experience did not influence spatiotemporal measures.
•Chronological age influenced contact time and peak knee flexion during stance.
•Increased chronological age was associated with reduced running speed.
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Purpose
Increased running experience and more time spent running appears to be advantageous in reducing injury risk, although the reason behind this is unclear. It is plausible that more experience results in better running mechanics leading to less injuries. Running mechanics are often screened during clinical assessments and targeted for correction in gait retraining, particularly those though to be global indicators of injury or those associated with elevated knee joint loading. Examining the biomechanics of runners who are less-injury prone can improve our understanding of the significance of faulty running mechanics in relation to injury. Our goal was to examine if running experience was correlated to differences in kinematics and kinetics associated with increased knee joint loading and running-related injury risk.

Methods
One hundred runners with varying experience ran on a pressure-sensing treadmill at a self-selected speed. Trunk and lower extremity kinematics, spatiotemporal measures, and ground reaction forces were collected. Multiple linear regression was used to assess the association between experience and three-dimensional hip kinematics, sagittal plane lower-extremity mechanics, and ground reaction forces while controlling for age and speed.

Results
Increased running experience was not significantly associated with running mechanics. Increased age was significantly associated with reduced peak knee flexion and increased contact time. Running speed influenced several spatiotemporal, kinematic, and kinetic variables.

Conclusion
Increased years of running experience does not appear to significantly influence running mechanics. However, age and running speed do influence biomechanical variables associated with injury in distance runners. Thus, there may be factors, other than running mechanics, that contribute to less risk in more experienced runners
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Admin2 · Dec 20, 2017

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