Abstract
[Purpose] We investigated the effectiveness of two types of exercise focusing on mono- and multi-articular movement during activities such as single-leg standing and gait using surface electromyograms (EMG). [Subjects] The subjects were 18 females with hip OA. [Methods] We defined tube band exercise as mono-articular movement (Mono group) and proprioceptive neuromuscular facilitation (PNF) as multi-articular movement (Multi group). EMG measurements of the activity of gluteus maximus (GMax), gluteus medius (GMed) and tensor fasciae latae (TFL) were made. [Results] The results were analyzed statistically. After each exercise, GMax in the Mono group during gait showed a significant decrease in the stance phase. In the Multi group, GMax and GMed were significantly increased during the stance phase, whereas GMax was significantly decreased during the swing phase. [Conclusion] These results suggest that exercise focusing on multi-articular movement may improve muscle activity and contraction rhythm during movement in patients with hip OA.
