The effect of motor control training on abdominal muscle contraction during simulated weight bearing in elite cricketers.
OBJECTIVE
To investigate whether motor control training alters automatic contraction of abdominal muscles in elite cricketers with low back pain (LBP) during performance of a simulated unilateral weight-bearing task.


METHODS
Clinical trial.


METHODS
26 male elite-cricketers attended a 13-week cricket training camp. Prior to the camp, participants were allocated to a LBP or asymptomatic group. Real-time ultrasound imaging was used to assess automatic abdominal muscle response to axial loading. During the camp, the LBP group performed a staged motor control training program. Following the camp, the automatic response of the abdominal muscles was re-assessed.


RESULTS
At pre-camp assessment, when participants were axially loaded with 25% of their own bodyweight, the LBP group showed a 15.5% thicker internal oblique (IO) muscle compared to the asymptomatic group (p = 0.009). The post-camp assessment showed that participants in the LBP group demonstrated less contraction of the IO muscle in response to axial loading compared with the asymptomatic group. A trend was found in the automatic recruitment pattern of the transversus abdominis (p = 0.08).


CONCLUSIONS
Motor control training normalized excessive contraction of abdominal muscles in response to a low load task. This may be a useful strategy for rehabilitation of cricketers with LBP.
Centre for Musculoskeletal Research, Mary MacKillop Institute for Health Research, Australian Catholic University, Level 1, 631 Stanley Street, Woolloongabba, QLD, Australia; Mater/ACU Back Stability Clinic, Mater Health Services, South Brisbane, QLD, Australia. Electronic address: julie.hides@acu.edu.au.
Julie A
JA
Hides
School of Physiotherapy, Australian Catholic University, McAuley Campus, Brisbane, QLD, Australia.
Timothy
T
Endicott
Centre for Musculoskeletal Research, Mary MacKillop Institute for Health Research, Australian Catholic University, Level 1, 631 Stanley Street, Woolloongabba, QLD, Australia.
M Dilani
MD
Mendis
Centre for Musculoskeletal Research, Mary MacKillop Institute for Health Research, Australian Catholic University, Level 1, 631 Stanley Street, Woolloongabba, QLD, Australia.
Warren R
WR
Stanton
D000009:Abdominal Muscles / Q000000981:diagnostic imaging / Q000502:physiology*; D006801:Humans; D017116:Low Back Pain / Q000503:physiopathology* / Q000517:prevention & control*; D008297:Male; D009119:Muscle Contraction / Q000502:physiology*; D010806:Physical Education and Training / Q000379:methods*; D013177:Sports / Q000502:physiology*; D016474:Weight-Bearing / Q000502:physiology*; D055815:Young Adult
Back pain; Cricket; Muscles; Ultrasound imaging