Abstract
Goal: The purpose of this cross-sectional study was to explore a possible relationship between exercise capacity and somatotype components, body composition, and quadriceps strength in individuals with coroner artery disease (CAD) Material and Methods: A convenient sample size of 60 participants between the ages of 45 and 60 years (mean age 56.6 ±4.7; 12 females [mean age 57.7±3.01], 48 males [mean age;56.3±5.1] was established from patients referred to the Department of the Cardiopulmonary Rehabilitation. The exercise was assessed using graded symptom-limited exercise testing while Participants' body composition was detected via Bioelectrical impedance analysis (BIA) technique by using TANITA SC-330 (TANITA, Tokyo, Japan). Finally, quadriceps femoris muscles testing was conducted with Dr Robert W. Lovett’s manual muscle testing method. Results: In the whole sample, exercise capacity was found to be negatively and weakly correlated with the endomorph component (r = - 0.39), whereas a slight and positive correlation was observed between the ectomorph component and exercise capacity (r = 0.28). However, the correlations revealed between exercise capacity and somatotype components differentiated with gender-based analysis. A moderate and weak correlation was found out between exercise capacity and fat mass (FM) in the whole group and the male individuals (r1=-0.45 and r2=-0.34), respectively; in contrast, there was not a meaningful correlation between the same variables in the female individuals(r=-0.002). Exercise capacity had slight and negative relationships with free-fat mass variable (FFM) in both gender (r1 = -0.28 and r2=-0.29), while small to moderate relationship with fat-mass variable (FM) in the male gender (r1=-0.34). Body composition elements, including FM, FFM and BMI, together explained a % 24 of variance in exercise capacity, while somatotype components together explained a % 16 of variance in the exercise capacity. Finally, quadriceps femoris strength was found to be the best predictor of exercise capacity of a patient with CAD (R2=0.44 or % 44) Conclusion: Our results suggest that exercise capacity in individuals with CAD is directly associated with somatotype components, anthropometry/body composition elements, and quadriceps strength.
Highlights
Coronary artery disease (CAD) is a significant cardiovascular disorder, which is the leading cause of death in both developed and developing countries [1]
The current study was the first to explore the relationship between exercise capacity and body composition, somatotype components, and quadriceps femoris (QF) muscle strength in patients with CAD
Exercise capacity was revealed to be positively associated with the ectomorph physique, demonstrating that little fat mass may positively affect the exercise capacity
Summary
Coronary artery disease (CAD) is a significant cardiovascular disorder, which is the leading cause of death in both developed and developing countries [1]. Because of both its most common causal factor of death in both genders and leading to diseases and socialeconomic burden, CAD is a significant health problem [2]. A possible relationship between somatotype components and anaerobic performance was reported in a cross-sectional study conducted by Ryan-Stewart et al [8], indicating a significant correlation between somatotype ratings and anaerobic performance
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