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See 1 citation in Phys Ther Sport 2017:

Phys Ther Sport. 2017 Jul;26:27-34. doi: 10.1016/j.ptsp.2017.05.002. Epub 2017 May 12.

Quality assessment of shoulder plyometric exercises: Examining the relationship to scapular muscle activity.

Author information

1
Ribstein Center for Sports Medicine and Research, Wingate Institute, 42902 Israel; Physical Therapy Department, Faculty of Social Welfare and Health Sciences, Abba Hushi 199, Mount Carmel, University of Haifa, 3498838, Israel. Electronic address: Benzoor@gmail.com.
2
Ghent University, Department of Rehabilitation Medicine and Physiotherapy, Campus Heymans, De Pintelaan 185, 9000 Ghent, Belgium.
3
Zinman College of Physical Education and Sport Sciences at the Wingate Institute, 42902 Netanya, Israel.
4
Department of Educational Psychology and Learning Systems, Florida State University, Tallahassee, FL 32306, USA.

Abstract

OBJECTIVES:

The purpose of the study was to evaluate performance quality of shoulder plyometric exercises, and examine the relationship to scapular muscle activation during an intense exercise bout.

DESIGN:

Observational study.

SETTING:

University laboratory.

PARTICIPANTS:

32 healthy university students (male/female: 14/18) volunteers.

MAIN OUTCOME MEASURES:

Subjects performed 10 plyometric exercises. Surface EMG of upper (UT), middle (MT) and lower (LT) trapezius and serratus anterior (SA) was registered. A quality assessment questionnaire was administered at the beginning and end of the exercise bout. Muscle activation at the beginning and end was evaluated by t-test. Mixed repeated measures ANOVA was conducted to test the effects of criterion-quality, time, muscles, exercises, and their interactions.

RESULTS:

Increased EMG activation was noted in 34/40 cases, (21/40 significant (p < 0.05) changes). Quality assessment revealed a decline in the ability to maintain initial position (43% of subjects), failure to keep a consistent and symmetrical arc of motion (62% of subjects), and performance with trick movements (48% of subjects). Inability to keep a consistent arc of motion was significant in 4 exercises.

CONCLUSIONS:

The novel questionnaire may aid quality assessment during plyometric exercises. Ability to keep a consistent arc of motion was the most sensitive marker of decline of performance quality.

KEYWORDS:

Plyometric exercise; Quality assessment; Scapular muscles; Shoulder

PMID:
28645094
DOI:
10.1016/j.ptsp.2017.05.002
[Indexed for MEDLINE]

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