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The effect of co-contraction exercises of abdominal bracing combined with ankle dorsiflexion on abdominal muscle thickness and strength in patients with chronic low back pain

Physical Therapy Rehabilitation Science 2014년 3권 2호 p.93 ~ 100
Wenlan Chai, 이소희, Park Yu-Hyung,
소속 상세정보
 ( Wenlan Chai ) - Waverly Physiotherapy Clinic
이소희 ( Lee So-Hee ) - Wooridul Spine Hospital Spine Health Care Center Department of Physical Therapy
 ( Park Yu-Hyung ) - Bobath Memorial Hospital Rehabilitation Medicine Center Department of Physical Therapy

Abstract


Objective: The purpose of this study was to determine the effect of the abdominal bracing (AB) and abdominal bracing combined with ankle dorsiflexion (ABDF) on abdominal muscle thickness and strength in patients with chronic low back pain (LBP).

Design: Two group pretest posttest design.

Methods: Sixteen subjects were divided randomly into two group: ABDF group (n=8), and alone AB group (n=8). The ABDF group practiced AB exercise with additional ankle dorsiflexion. AB group practiced only AB exercises. Subjects in both groups received ABDF exercise and AB exercise for 40 min per day, three days per week during a period of three weeks, respectively. All the subjects were evaluated for abdominal muscle thickness and strength before and after intervention using ultrasonography and MedX machine.

Results: The external oblique (EO), internal oblique, transverse abdominis (TrA) muscle thickness and the strength produced at 48°, 60°, 72° showed a significant increase in the ABDF group after intervention, with a more significant improvement in EO and TrA muscle thickness in the ABDF group compared with the AB group (p<0.05). Also, the strength at 48° strength showed a significant improvement in the ABDF group than the AB group (p<0.05).

Conclusions: The study results showed that abdominal muscle contraction exercises with AD in patients with LBP had an influence on abdominal muscle thickness and strength. Therefore, these findings suggest that ABDF may be useful approach for enhancement of abdominal muscle thickness and strength in patients with chronic low back pain.

키워드

Abdominal muscle; Low back pain; Ultrasonography

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