سه شنبه 25 شهریور 1404
چکیده: (29 مشاهده)
Objective: Shoulder injuries are common in CrossFit athletes, with scapular dysfunction playing a key role. Given the importance of the scapula in force transmission and shoulder stability, this study aims to investigate the effect of a corrective exercise program on improving shoulder stability in CrossFit athletes.
Methodology: This quasi-experimental study initially enrolled 26 male CrossFit athletes (25–30 years) recruited via purposive sampling from local clubs based on predefined eligibility criteria. An a priori power analysis (G*Power 3.1; effect size = 0.54, α = 0.05, power = 0.80) indicated a minimum of 24 participants; to accommodate ~10% attrition, 26 were enrolled and equally allocated to intervention and control groups (13/13). Scapular stability was assessed with the Davis Test pre- and post-intervention. Data normality was examined with the Shapiro–Wilk test; within-group changes were analyzed using paired t-tests, and between-group effects with ANCOVA (adjusting for pre-test values). Two control participants were lost to follow-up; analyses were completed on 24 athletes. All analyses were performed in SPSS v26 (α = 0.05).
Findings: The intervention group showed significant improvements in scapular stability, with Davis Test record increasing by 8.4% and Power Output increasing by 8.4% (P < 0.01), while the control group showed no significant changes (P > 0.05). ANCOVA confirmed significant between-group differences in both Davis Test record (Adjusted Means ± SD: 13.42 ± 1.20 vs. 12.67 ± 1.65; Partial η² = 0.205) and Power Output (Adjusted Means ± SD: 1138.23 ± 98.67 vs. 1050.76 ± 134.55;Partial η² = 0.241; P < 0.05), demonstrating the effectiveness of the corrective exercise program.
Conclusion: The present study demonstrated that the selected corrective exercises can improve scapular function and enhance shoulder stability. This improvement contributes to increased shoulder strength and power, ultimately leading to the correction of movement dysfunctions.
Methodology: This quasi-experimental study initially enrolled 26 male CrossFit athletes (25–30 years) recruited via purposive sampling from local clubs based on predefined eligibility criteria. An a priori power analysis (G*Power 3.1; effect size = 0.54, α = 0.05, power = 0.80) indicated a minimum of 24 participants; to accommodate ~10% attrition, 26 were enrolled and equally allocated to intervention and control groups (13/13). Scapular stability was assessed with the Davis Test pre- and post-intervention. Data normality was examined with the Shapiro–Wilk test; within-group changes were analyzed using paired t-tests, and between-group effects with ANCOVA (adjusting for pre-test values). Two control participants were lost to follow-up; analyses were completed on 24 athletes. All analyses were performed in SPSS v26 (α = 0.05).
Findings: The intervention group showed significant improvements in scapular stability, with Davis Test record increasing by 8.4% and Power Output increasing by 8.4% (P < 0.01), while the control group showed no significant changes (P > 0.05). ANCOVA confirmed significant between-group differences in both Davis Test record (Adjusted Means ± SD: 13.42 ± 1.20 vs. 12.67 ± 1.65; Partial η² = 0.205) and Power Output (Adjusted Means ± SD: 1138.23 ± 98.67 vs. 1050.76 ± 134.55;Partial η² = 0.241; P < 0.05), demonstrating the effectiveness of the corrective exercise program.
Conclusion: The present study demonstrated that the selected corrective exercises can improve scapular function and enhance shoulder stability. This improvement contributes to increased shoulder strength and power, ultimately leading to the correction of movement dysfunctions.
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