Deep abdominal muscle thickness measured under sitting conditions during different stability tasks
| Autor: | Yutaka Sawada, Takahiro Otsudo, Yu Okubo, Kiyokazu Akasaka, Hideyuki Nagai |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Orthodontics
030222 orthopedics medicine.medical_specialty Deep Abdominal Muscle business.industry Physical Therapy Sports Therapy and Rehabilitation Sitting 03 medical and health sciences 0302 clinical medicine Abdominal hollowing Deep abdominal muscles Physical therapy Medicine Original Article Transversus abdominis Internal Oblique Muscle Ultrasonography business 030217 neurology & neurosurgery Hip flexion |
| Zdroj: | Journal of Physical Therapy Science |
| ISSN: | 2187-5626 0915-5287 |
| Popis: | [Purpose] This study was conducted to investigate ultrasonically determined changes in the thickness of the transversus abdominis and internal oblique muscles during different sitting conditions. [Subjects and Methods] Twenty healthy men volunteered to participate in this study. Four different sitting conditions including (A) sitting, (B) sitting with left hip flexion, (C) sitting with an abdominal hollowing maneuver (AHM), and (D) sitting with an AHM and left hip flexion, were used. Subjective exercise difficulty was evaluated. [Results] Transversus abdominis and internal oblique muscle thicknesses significantly differed between conditions, with significantly greater thickness between positions from (A) to (D). Stability of the surface when sitting had no effect on the muscle thickness of the transversus abdominis. By contrast, sitting on an unstable surface caused an increase in muscle thickness of the internal oblique in each condition. The subjects reported progressively increasing difficulty in performing each exercise in a stable position from (A) to (D), while the difficulty in an unstable position was significantly different between (A) and (B), and between (C) and (D). [Conclusion] Our findings suggest that task (B) on a stable surface should be chosen for maximal activation of transversus abdominis without inducing overactivation of the internal oblique muscle. |
| Databáze: | OpenAIRE |
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