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KMID : 0608320170240020009
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Physical Therapy Korea
2017 Volume.24 No. 2 p.9 ~ p.18
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Comparison of the Immediate Effects of the Neural Mobilization Technique and Static Stretching Exercise on Popliteal Angle and Hamstring Compliance in Young Women With Short Hamstring Syndrome
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Oh Duck-Won
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Abstract
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Background: Limitation of hamstring extensibility is often associated with various musculoskeletal problems such as alterations in posture and walking patterns. Thus, certain appropriate strategies need to be established for its management. Objects: The aim of this study was to compare the effects of the neural mobilization technique and static stretching exercises on popliteal angle and hamstring compliance in young women with short hamstring syndrome (SHS).
Methods: Thirty-three women with SHS were randomly assigned to either group-1 (n1=17) that underwent the neural mobilization technique or group-2 (n2=16) that underwent the static stretching exercises. Outcome measures included the active popliteal angle (APA) and a hamstring’s electromyographic (EMG) activity at a maximum popliteal angle of the baseline. Intervention for each group was performed for a total time of 3-min (6 sets of a 30-sec application).
Results: There were significant interactions between time and group in the APA [group-1 (pre-test to post-test): 69.70±8.14° to 74.14±8.07° and group-2: 68.66±7.42° to 70.52±7.92°] (F1,31=6.678, p=.015) and the EMG activity of the hamstring (group-1: 1.12±.30㎶ to .69±.31㎶ and group-2: 1.19±.49㎶ to 1.13±.47㎶)(F1,31=6.678, p=.015). Between-group comparison revealed that the EMG activity of the hamstring was significantly different at post-test between the groups (p<.05). Furthermore, in within-group comparison, group-1 appeared to be significantly different for both variables between pre- and post-test (p<.05); however, group-2 showed significant difference in only the APA between pre- and post-test (p<.05).
Conclusion: These findings suggest that the neural mobilization technique and static stretching exercises may be advantageous to improve hamstring compliance in young women with SHS, resulting in a more favorable outcome in the neural mobilization technique.
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KEYWORD
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Active knee extension angle, Hamstring compliance, Neural mobilization, Stretching
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