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J Sports Med (Hindawi Publ Corp). 2016;2016:3987486. doi: 10.1155/2016/3987486. Epub 2016 Jun 15.

Comparison of Muscle Onset Activation Sequences between a Golf or Tennis Swing and Common Training Exercises Using Surface Electromyography: A Pilot Study.

Author information

1
Department of Physical Medicine & Rehabilitation, University of Pennsylvania, 1800 Lombard Street, Philadelphia, PA 19146, USA.
2
Human Performance Lab, Sports Medicine Center, Department of Orthopaedic Surgery, Stanford University, 341 Galvez Street, Lower Level, Stanford, CA 94305, USA.
3
Human Performance Lab, Sports Medicine Center, Department of Orthopaedic Surgery, Stanford University, 341 Galvez Street, Lower Level, Stanford, CA 94305, USA; Division of Sports Medicine, Department of Orthopaedic Surgery, Stanford University, 450 Broadway Street, Redwood City, CA 94063, USA.
4
Division of Sports Medicine, Department of Orthopaedic Surgery, Stanford University, 450 Broadway Street, Redwood City, CA 94063, USA.

Abstract

AIM:

The purpose of this pilot study is to use surface electromyography to determine an individual athlete's typical muscle onset activation sequence when performing a golf or tennis forward swing and to use the method to assess to what degree the sequence is reproduced with common conditioning exercises and a machine designed for this purpose.

METHODS:

Data for 18 healthy male subjects were collected for 15 muscles of the trunk and lower extremities. Data were filtered and processed to determine the average onset of muscle activation for each motion. A Spearman correlation estimated congruence of activation order between the swing and each exercise. Correlations of each group were pooled with 95% confidence intervals using a random effects meta-analytic strategy.

RESULTS:

The averaged sequences differed among each athlete tested, but pooled correlations demonstrated a positive association between each exercise and the participants' natural muscle onset activation sequence.

CONCLUSION:

The selected training exercises and Turning Pointâ„¢ device all partially reproduced our athletes' averaged muscle onset activation sequences for both sports. The results support consideration of a larger, adequately powered study using this method to quantify to what degree each of the selected exercises is appropriate for use in both golf and tennis.

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