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Updated: May 9, 2026
Comparative Analysis of Lower Limb Kinematics between the Initial and Terminal Phase of 5km Treadmill Running
Published on: July 17, 2020
Kinetic asymmetries during running in male youth
Michael C Rumpf1, John B Cronin2, Ikhwan N Mohamad3
1Sport Performance Research Institute New Zealand, AUT University, 90 Akoranga Drive North Shore, Auckland, New Zealand; New Zealand Football, Lion Foundation House, Albany, Auckland, New Zealand.
Objectives:
A possible injury risk factor is limb asymmetry, which may differ across maturation given the adult growth spurt. The aim of this study is to quantify the magnitude of asymmetry in a number of kinetic variables during a running task in male youth of different maturity status.
Design:
Quantitative observational laboratory study.
Setting:
Sports performance laboratory.
Participants:
Non-injured youth athletes in pre-, mid-, and post-pubescent status.
Main Outcome Measures:
Inter-limb leg asymmetries whilst sprinting on a non-motorized treadmill. Percent asymmetry was defined as: (Left leg - right leg)/right leg*100 = %asymmetry.
Results:
Horizontal force presented limb asymmetries of 15.4, 14.8 and 14.7% for the pre-, mid- and post-PHV group respectively. Values for vertical force were higher (18.1, 20.2 and 20.8% respectively). Power asymmetries were 14.9, 15.8, and 15.5% respectively and work asymmetries were significant higher in pre-PHV participants (26.4%) compared to mid- (14.7%) and post-PHV (17.3%) participants.
Conclusions:
As the population in this study was characterized as non-injured, asymmetries of 15-20% appeared typical during a running task in developmental athletes.
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