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. 2021 Dec 11;18(24):13078.
doi: 10.3390/ijerph182413078.

Effects of Different Types of Contraction Exercises on Shoulder Function and Muscle Strength in Patients with Adhesive Capsulitis

Won-Moon Kim  1 , Yong-Gon Seo  2 , Yun-Jin Park  3 , Han-Su Cho  4 , Su-Ah Lee  5 , Sang-Jun Jeon  6 , Sang-Min Ji  6
Affiliations

Effects of Different Types of Contraction Exercises on Shoulder Function and Muscle Strength in Patients with Adhesive Capsulitis

Won-Moon Kim et al. Int J Environ Res Public Health. .

Abstract

Although several studies have reported the effect of exercise therapy for adhesive capsulitis (AC), studies on the comparison of different exercise types on shoulder muscle strength and function in patients with AC are lacking. This study aimed to investigate the effect of different exercise types on shoulder muscle strength and function in patients with AC. Thirty female patients with AC were categorized into an eccentric contraction exercise group (ECG, n = 15; age, 51.53 ± 4.73 years) and a concentric contraction exercise group (CCG, n = 15; age, 52.40 ± 4.03 years). The participants in each group performed a different exercise program three times per week for 60 min per session for 12 weeks. The range of motion (ROM) of the shoulder joint, visual analog scale, shoulder muscle strength, and Constant-Murley score (CMS) were measured before the intervention and after 12 weeks of the exercise intervention. Shoulder ROM in flexion (increase of 31%) and external rotation (ER) (increase of 54%) showed a significant improvement in the ECG (p < 0.05). Muscle strength in ER was significantly different between the two groups (p < 0.05). Pain severity showed improvement in the ECG (decrease of 61%) after the intervention (p < 0.01). The CMS in the ECG (increase of 48%) showed a greater improvement than that in the CCG after the intervention (p < 0.01). This study showed that eccentric contraction exercise had a more beneficial effect than concentric contraction exercise for improving shoulder muscle strength and function in females with AC.

Keywords: exercise therapy; muscle contraction; muscle strength; recovery of function; shoulder adhesive capsulitis.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Flow chart of this study.
Figure 2
Figure 2
Exercise intervention: (A) forward flexion with concentric contraction; (B) forward flexion with eccentric contraction; (C) extension with concentric contraction; (D) extension with eccentric contraction; (E) external rotation with concentric contraction; (F) external rotation with eccentric contraction; (G) internal rotation with concentric contraction; (H) internal rotation with eccentric contraction; (I) abduction with concentric contraction; (J) abduction with eccentric contraction; (K) adduction with concentric contraction; (L) adduction with eccentric contraction; (M) rowing with concentric contraction; (N) rowing with eccentric contraction; (O) rowing plus with concentric contraction; (P) rowing plus with eccentric contraction.
Figure 3
Figure 3
Measurement of the shoulder range of motion: (A) forward flexion; (B) abduction; (C) external rotation.
Figure 4
Figure 4
Measurement of muscle strength: (A) forward flexion; (B) external rotation.
See this image and copyright information in PMC

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