The effects of isometric contraction handgrip exercise with non-painful side on pain score and shoulder range of motion in patients with chronic shoulder myalgia

Main Article Content

Rujida Thong-oun

Abstract

Background: Isometric handgrip exercise with non-painful side has been found to increase pressure pain threshold in patients suffering chronic shoulder myalgia. However, no study has investigated the effects of the exercise on range of motion.


Objective: To study the immediate effects of isometric handgrip exercise on pain score and range of motion in patients with chronic shoulder myalgia.


Methods: This study was a quasi-experimental one group pretest-posttest design. Forty patients with chronic unilateral shoulder myalgia (mean age 57.75 years, range 30-75) completed 3-minute isometric handgrip exercise at 25% maximum voluntary contraction (MVIC) on the non-painful side. Before and immediately after the exercise, pain score and shoulder range of motion were measured when elevating the painful shoulder.


Results: Increased shoulder range of motion both at the onset of pain and at the pain limitation range were found after the isometric handgrip exercise on the non-painful side. The average ranges of motion at the onset of pain before and after exercise were 115.13 ± 25.67 and 125.63 ± 30.59 degrees, respectively (p = 0.001). The average ranges of motion at the pain limitation range before and after exercise were 154.68 ± 23.96 and 160.03 ± 19.04 degrees, respectively (p = 0.015). No significant changes in pain scores were found at both ranges (p = 0.853 and p = 0.393).


Conclusion: Isometric handgrip exercise at 25% MVIC for 3 minutes on the non-painful side of chronic shoulder myalgia patients could immediately improve range of motion on the painful shoulder.

Article Details

How to Cite
1.
Thong-oun R. The effects of isometric contraction handgrip exercise with non-painful side on pain score and shoulder range of motion in patients with chronic shoulder myalgia. Thai J Phys Ther [Internet]. 2023 Aug. 14 [cited 2024 Nov. 1];45(2):124-3. Available from: https://he02.tci-thaijo.org/index.php/tjpt/article/view/260053
Section
Research Articles

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