Predictors of 6-minute walk test results in lean, obese and morbidly obese women
Predictors of 6-minute walk test results in lean, obese and morbidly obese women
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DOI：
10.1034/j.1600-0838.2003.10273.x
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发表时间：
2003-04-01
影响因子：
4.1
通讯作者：
Muls, E
中科院分区：
文献类型：
--
作者：
Hulens, M;Vansant, G;Muls, E
本研究的目的是：第一，评估可能干扰行走的医疗条件的存在;第二，评估瘦，肥胖和病态肥胖女性之间的行走能力，感知的消耗和身体不适的差异;第三，要确定人体测量，身体健康和身体活动变量，有助于在6-对85名超重和肥胖女性进行了一分钟步行试验，（18-65岁，体重指数（BMI）大于或等于27.5 kg m（-2）），133名病态肥胖女性研究对象为体重指数（BMI）≥ 35 kg·m ~（-2）的女性志愿者和82名年龄匹配的久坐不动的瘦型女性志愿者（BMI ≤ 26 kg·m ~（-2））。患有严重肌肉骨骼和心肺疾病的患者被排除在研究之外。在测试之前，可能干扰走路和看电视的条件被要求。使用Baecke问卷评估身体活动模式。测量体重、身高、体成分（生物电阻抗法）、等速向心股四头肌肌力（Cybex）和峰值摄氧量（peakVO（2-）自行车测力计）。进行6分钟步行试验，并记录心率、步行距离、感觉用力的博格评定量表（RPE）和试验结束时的身体不适。在患有皮肤摩擦、压力性尿失禁、静脉曲张、足部静电问题和疼痛、穿着鞋垫、患有膝关节疼痛的肥胖且特别是病态肥胖的妇女中，腰痛和髋关节炎的患病率明显高于瘦型女性（P < 0.05）。病态肥胖女性（BMI > 35 kg m（-2）N = 133）行走明显较慢（5.4 km h（-1））比肥胖（5.9公里每小时（-1））和瘦妇女（7.2 km h（-1），P < 0.05），用力较多RPE分别为13.3，12.8和12.4，P < 0.05），主诉呼吸困难的频率更高（分别为9.1%，4.7%和0%），P < 0.05）和肌肉骨骼疼痛（分别为34.9%，17.7%和11.4%，P < 0.05）。在多元回归分析中，75%的步行距离的差异可以用BMI、峰值VO（2）、股四头肌肌力、年龄、看电视或参加体育活动的时间来解释。这些数据表明，与瘦女性相比，肥胖女性的步行能力不仅受到超重、有氧能力降低和久坐不动的生活方式的阻碍，而且还受到感知到的不适和疼痛的阻碍。旨在增加步行锻炼的建议或计划还需要解决干扰步行的条件，以及感知到的症状和步行困难，以提高参与度和依从性。
The aim of this study was first, to assess the presence of medical conditions that might interfere with walking; second, to assess the differences in walking capacity, perceived exertion and physical complaints between lean, obese and morbidly obese women; and third, to identify anthropometric, physical fitness and physical activity variables that contribute to the variability in the distance achieved during a 6-minute walk test in lean and obese women.A total of 85 overweight and obese females (18-65 years, body mass index (BMI) greater than or equal to 27.5 kg m(-2) ), 133 morbidly obese females (BMI greater than or equal to 35 kg m(-2) ) and 82 age-matched sedentary lean female volunteers (BMI less than or equal to 26 kg m(-2) ) were recruited. Patients suffering from severe musculoskeletal and cardiopulmonary disease were excluded from the study. Prior to the test, conditions that might interfere with walking and hours of TV watching were asked for. Physical activity pattern was assessed using the Baecke questionnaire. Weight, height, body composition (bioelectrical impedance method), isokinetic concentric quadriceps strength (Cybex) and peak oxygen uptake (peakVO(2-) bicycle ergometer) were measured. A 6-minute walk test was performed and heart rate, walking distance, Borg rating scale of perceived exertion (RPE) and physical complaints at the end of the test were recorded.In obese and particularly in morbidly obese women suffering from skin friction, urinary stress incontinence, varicose veins, foot static problems and pain, wearing insoles, suffering from knee pain, low back pain or hip arthritis were significantly more prevalent than in lean women (P < 0.05). Morbidly obese women (BMI > 35 kg m(-2) N = 133) walked significantly slower (5.4 km h(-1) ) than obese (5.9 km h(-1) ) and lean women (7.2 km h(-1) , P < 0.05), were more exerted (RPE 13.3, 12.8 and 12.4, respectively, P < 0.05) and complained more frequently of dyspnea (9.1%, 4.7% and 0% resp., P < 0.05) and musculoskeletal pain (34.9%, 17.7% and 11.4% resp., P < 0.05) at the end of the walk. In a multiple regression analysis, 75% of the variance in walking distance could be explained by BMI, peakVO(2) , quadriceps muscle strength age, and hours TV watching or sports participation.These data suggest that in contrast with lean women, walking ability of obese women is hampered not only by overweight, reduced aerobic capacity and a sedentary life style, but also by perceived discomfort and pain. Advice or programs aimed at increasing walking for exercise also need to address the conditions that interfere with walking, as well as perceived symptoms and walking difficulties in order to improve participation and compliance.