Abstract
[Purpose] We investigated the correlation between leg extensor torque and hip flexor and extensor strength in order to examine the correlation between measurements of leg extensor torque with StrengthErgo and measurements of hip flexor and extensor strength with a hand-held dynamometer. [Subjects] The subjects were 50 healthy adults with no lower limb problems. [Method] We measured hip flexor and extensor strength and leg extensor peak torque on the right and left sides relative to body weight, and examined the relationship between them using Spearman correlation coefficients. [Results] We found a strong correlation between leg extensor torque and hip flexor strength and a weak correlation between leg extensor torque and hip extensor strength. [Conclusion] The results suggest that hip flexor and extensor strength are involved in the exertion of leg extensor torque.
