Ji-Hyun Lee1, Heon-Seock Cynn1, Tae-Lim Yoon2, Sil-Ah Choi1, Tae-Woo Kang1. 1. Applied Kinesiology and Ergonomic Technology Laboratory, Department of Physical Therapy, Graduate School, Yonsei University, Wonju, Korea. 2. Department of Physical Therapy, College of Health Science, Cheongju University, Cheongju, Korea.
Abstract
BACKGROUND AND OBJECTIVES: Excessive activity of the tibialis anterior muscle may be a causal mechanism in overuse injuries such as stress fracture in pes planus patients. However, information about this relationship is limited. In this study, we compared the angle of the medial longitudinal arch, the activities of the abductor hallucis and tibialis anterior muscles, and the activity ratio of tibialis anterior/abductor hallucis in individuals with pes planus and those with a neutral foot position during short-foot exercises conducted while sitting. METHODS: Differences between the groups were analyzed using an independent t-test. In all, 28 university students participated in this study (14 subjects in each group). RESULTS: The activity of the abductor hallucis muscle was significantly lower (p < 0.001), and the activity ratio of tibialis anterior/abductor hallucis was significantly greater (p = 0.012) in the pes planus group than in the neutral foot group during the exercise. CONCLUSIONS: Clinicians should recognize that pes planus patients may compensate for reduced activation of the abductor hallucis to maintain the angle of the medial longitudinal arch during the sitting short-foot exercise.
BACKGROUND AND OBJECTIVES: Excessive activity of the tibialis anterior muscle may be a causal mechanism in overuse injuries such as stress fracture in pes planuspatients. However, information about this relationship is limited. In this study, we compared the angle of the medial longitudinal arch, the activities of the abductor hallucis and tibialis anterior muscles, and the activity ratio of tibialis anterior/abductor hallucis in individuals with pes planus and those with a neutral foot position during short-foot exercises conducted while sitting. METHODS: Differences between the groups were analyzed using an independent t-test. In all, 28 university students participated in this study (14 subjects in each group). RESULTS: The activity of the abductor hallucis muscle was significantly lower (p < 0.001), and the activity ratio of tibialis anterior/abductor hallucis was significantly greater (p = 0.012) in the pes planus group than in the neutral foot group during the exercise. CONCLUSIONS: Clinicians should recognize that pes planuspatients may compensate for reduced activation of the abductor hallucis to maintain the angle of the medial longitudinal arch during the sitting short-foot exercise.
Entities:
Keywords:
Abductor hallucis; pes planus; short-foot exercise; tibialis anterior