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Volume 7, Issue 6 (Suppl)

J Nov Physiother

ISSN: 2165-7025 JNP, an open access journal

Physiotherapy 2017

November 27-29, 2017

November 27-29, 2017 Dubai, UAE

International Conference on

Physiotherapy

Comparative effect of modified shrug exercises with and without abdominal muscle activation on

scapular upward rotator EMG and thickness in subjects with scapular downward rotation syndrome

Ji-Hyun Kim, Hyeo-bin yoon, Joo-hee Park and Hye-seon Jeon

Yonsei University, South Korea

capular downward rotation syndrome (SDRS) is a common

scapular alignment impairment that causes insufficient upward

rotation and muscle imbalance, shortened levator scapulae

(LS) and rhomboid and lengthened serratus anterior (SA) and

trapezius. A modified shrug exercise (MSE), performing a shrug

exercise with the shoulders at 150° abduction, is known as an

effective exercise to increase scapular stabilizer muscle activation.

Previous studies revealed that scapular exercise is more effective

when combined with various abdominal muscle contractions in decreasing scapular winging and increasing scapular stabilizer

muscle activation. Therefore, the purpose of our study was to clarify the effect of MSE with or without abdominal muscle

contraction in subjects with SDRS. Eighteen (18) volunteer subjects (male=10, female=8, mean age=22.8) with SDRS were

recruited for this experiment. All subjects performed MSE under 3 different conditions: (1) MSE, (2) MSE with an abdominal

draw-in maneuver (ADIM) and (3) MSE with an abdominal expansion maneuver (AEM). The muscle thickness of the lower

trapezius (LT) and the SA were measured using an ultrasonography in each condition. Electromyography (EMG) data were

collected from the LT, LS, SA and upper trapezius (UT) muscle activities. Data were statistically analyzed using one-way

repeated analysis of variance at a significance level of 0.05. The muscle thickness of the LT and the SA were the significant

difference among the conditions (p<0.05). In both LT and SA, the order of muscle thickness was MSE with AEM, MSE with

ADIM and MSE alone. No significant differences, however, were found in the EMG activities of the SA, UT, LS and LT. In

conclusion, MSE is more beneficial to people with SDRS when combined with abdominal muscle contraction by increased

thickness of scapular stabilizer muscles.

Biography

Ji-Hyun Kim is a

student in the Department of Physical Therapy at the Graduate School of Yonsei University. She received B.S. degree in department of

rehabilitation health from Yonsei University. Her main research interests are orthopedic rehabilitation, athletic rehabilitation and motor control.

Ji-hyun Kim

., J Nov Physiother 2017, 7:6(Suppl)

DOI: 10.4172/2165-7025-C1-021