抄録
The purpose of this study was to analyze the relationship between force and muscle size on foot intrinsic and extrinsic muscles. Cross-sectional areas (CSA) of these muscles were measured by MRI, and maximum foot grip force was measured by specific designed dynamometers, in 12 young healthy participants (6 males, 6 females, age 20.1 ±0.7 yrs). Foot grip force was primarily related to the cross sectional area of plantar intrinsic foot muscle (PIFM CSA, r=0.68l). And the cross sectional area of tibialis posterior (TP CSA) and flexor hallucis longus (FHL CSA) were also significantly correlated with foot grip force (TP, r=0.630; FHL r=0.632). These results demonstrated that the foot grip force was influenced by both of the intrinsic and extrinsic muscles.
