Abstract
Body mass index (BMI) is one of the indicators used to detect body weight and nutritional status. Excessive weight can affect the occurrence of pronated feet (PF) compared with who have normal weight. Therefore, this study aims to Interaction of overweight and foot pronation on ground reaction force frequency content. 104 young male and female adults were allocated to four experimental groups: normal body-mass-index/normal feet; normal body-mass-index/pronated feet; overweight or obesity/normal feet and overweight or obesity/pronated feet. Biomechanical testing included participants to run at ~3.2 m/s over an 18-m walkway with an embedded force plate at its midpoint. Three-dimensional ground reaction forces were recorded and normalized to body mass to evaluate running kinetics from 20 running trials. Findings demonstrated significant main effect of “gender” (P=0.000; Eta square=0.392) and “group” (P=0.000; Eta square=0.264) and “gender-by-group interaction” (P=0.000; Eta square=0.442) for essential number of harmonic in vertical direction. Overall, our results showed gender, body mass index, and foot type could possibly affect ground reaction force frequency content while running. These findings could be used for designing rehabilitation protocols for individuals with overweight/obesity or pronated feet and or both of them.
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