1. Change in the circulation and activity of the lower erector spinae muscles after repeated trunk extension movement
- Author
-
Ryo Matsuda, Takayuki Okumura, Sinnosuke Nitta, Toshiaki Seko, Tsuneo Kumamoto, and Sayo Miura
- Subjects
Male ,030506 rehabilitation ,medicine.medical_specialty ,Paraspinal Muscles ,Hemodynamics ,Physical Therapy, Sports Therapy and Rehabilitation ,Repetition Number ,Multifidus muscle ,Young Adult ,03 medical and health sciences ,0302 clinical medicine ,Physical medicine and rehabilitation ,medicine ,Erector spinae muscles ,Humans ,Orthopedics and Sports Medicine ,Exercise ,Spectroscopy, Near-Infrared ,Electromyography ,business.industry ,Rehabilitation ,Significant difference ,Torso ,030229 sport sciences ,Low back pain ,Trunk ,Healthy Volunteers ,Oxyhemoglobins ,Healthy individuals ,medicine.symptom ,0305 other medical science ,business - Abstract
Background The optimum repetition number of standing back-extension exercise (SBEE) effective for the prevention and improvement of low back pain (LBP) is unknown. Objective To determine the effect of physiotherapy on LBP by investigating the optimum repetition number of SBEE via optical analysis and electromyographic (EMG) examination of the multifidus muscles. Methods Hemodynamics and multifidus muscle activity were examined in 16 healthy adult men using near-infrared spectroscopy and surface EMG after performing repetitive SBEE. Results Oxidized hemoglobin (Oxy-Hb) levels significantly increased in the second extension phase but decreased in the third and subsequent extension phases; deoxidized hemoglobin (deOxy-Hb) levels increased in the third and subsequent extension phases. In the standing phase, no significant difference was observed; in the third and subsequent phases, Oxy-Hb levels decreased and deOxy-Hb levels increased. Muscular activity significantly decreased in the second standing phase but increased in the third and subsequent phases. No significant difference was observed in the extension phase with respect to the number of SBEE repetitions performed. In healthy individuals, hemodynamics improved up to second repetition of SBEE; subsequent repetitions may decrease hemodynamics because of increased activity of the multifidus muscles. Conclusions In healthy individuals, hemodynamics improved up to second repetition of SBEE. more...
- Published
- 2019
- Full Text
- View/download PDF