Karelis Antony D, Fontaine Jonathan, Messier Virginie, Messier Lyne, Blanchard Chris, Rabasa-Lhoret Remi, Strychar Irene
Department of Kinanthropology, University of Quebec at Montreal, Montreal, Quebec, Canada.
J Sports Sci. 2008 Jul;26(9):935-40. doi: 10.1080/02640410801885958.
The purpose of this study was to examine the psychosocial correlates of cardiorespiratory fitness (VO2peak) and muscle strength in overweight and obese sedentary post-menopausal women. The study population consisted of 137 non-diabetic, sedentary overweight and obese post-menopausal women (mean age 57.7 years, s = 4.8; body mass index 32.4 kg.m(-2), s = 4.6). At baseline we measured: (1) body composition using dual-energy X-ray absorptiometry; (2) visceral fat using computed tomography; (3) insulin sensitivity using the hyperinsulinaemic-euglycaemic clamp; (4) cardiorespiratory fitness; (5) muscle strength using the leg press exercise; and (6) psychosocial profile (quality of life, perceived stress, self-esteem, body-esteem, and perceived risk for developing chronic diseases) using validated questionnaires. Both VO2peak and muscle strength were significantly correlated with quality of life (r = 0.29, P < 0.01 and r = 0.30, P < 0.01, respectively), and quality of life subscales for: physical functioning (r = 0.28, P < 0.01 and r = 0.22, P < 0.05, respectively), pain (r = 0.18, P < 0.05 and r = 0.23, P < 0.05, respectively), role functioning (r = 0.20, P < 0.05 and r = 0.24, P < 0.05, respectively), and perceived risks (r = -0.24, P < 0.01 and r = -0.30, P < 0.01, respectively). In addition, VO2peak was significantly associated with positive health perceptions, greater body esteem, and less time watching television/video. Stepwise regression analysis showed that quality of life for health perceptions and for role functioning were independent predictors of VO2peak and muscle strength, respectively. In conclusion, higher VO2peak and muscle strength are associated with a favourable psychosocial profile, and the psychosocial correlates of VO2peak were different from those of muscle strength. Furthermore, psychosocial factors could be predictors of VO2peak and muscle strength in our cohort of overweight and obese sedentary post-menopausal women.
本研究旨在探讨超重及肥胖的久坐绝经后女性的心肺适能（最大摄氧量）和肌肉力量的社会心理相关因素。研究对象包括137名非糖尿病、久坐的超重及肥胖绝经后女性（平均年龄57.7岁，标准差 = 4.8；体重指数32.4 kg·m⁻²，标准差 = 4.6）。在基线时，我们测量了：（1）使用双能X线吸收法测量身体成分；（2）使用计算机断层扫描测量内脏脂肪；（3）使用高胰岛素正葡萄糖钳夹技术测量胰岛素敏感性；（4）测量心肺适能；（5）使用腿部推举运动测量肌肉力量；以及（6）使用经过验证的问卷测量社会心理概况（生活质量、感知压力、自尊、身体自尊以及患慢性病的感知风险）。最大摄氧量和肌肉力量均与生活质量显著相关（分别为r = 0.29，P < 0.01和r = 0.30，P < 0.01），并且与以下生活质量子量表也显著相关：身体功能（分别为r = 0.28，P < 0.01和r = 0.22，P < 0.05）、疼痛（分别为r = 0.18，P < 0.05和r = 0.23，P < 0.05）、角色功能（分别为r = 0.20，P < 0.05和r = 0.24，P < 0.05）以及感知风险（分别为r = -0.24，P < 0.01和r = -0.30，P < 0.01）。此外，最大摄氧量与积极的健康认知、更高的身体自尊以及更少的看电视/视频时间显著相关。逐步回归分析表明，健康认知和角色功能的生活质量分别是最大摄氧量和肌肉力量的独立预测因素。总之，更高的最大摄氧量和肌肉力量与良好的社会心理概况相关，并且最大摄氧量的社会心理相关因素与肌肉力量的不同。此外，在我们超重及肥胖的久坐绝经后女性队列中，社会心理因素可能是最大摄氧量和肌肉力量的预测因素。
