Changes in Cardiorespiratory Fitness After Gastric Bypass: Relations with Accelerometry-Assessed Physical Activity
Changes in Cardiorespiratory Fitness After Gastric Bypass: Relations with Accelerometry-Assessed Physical Activity
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DOI：
10.1007/s11695-019-03932-2
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发表时间：
2019-09-01
期刊：
影响因子：
2.9
通讯作者：
Oppert, Jean-Michel
中科院分区：
文献类型：
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作者：
Bellicha, Alice;Ciangura, Cecile;Oppert, Jean-Michel
运动训练可以优化减肥手术后的心肺功能，但自发性体力活动的效果还不清楚。本研究旨在客观量化减肥手术后6个月CRF和习惯性体力活动的变化，并检查CRF的变化是否与体力活动的变化相关。方法对2010年至2014年间接受Roux-en-Y胃旁路术（RYGB）的女性数据进行二次分析。测量前和6个月后RYGB和包括V？O（2）峰值（在自行车测力计上进行分级最大运动试验）、习惯性体力活动（7天内佩戴Actigraph GT 3x加速计）和身体成分（DXA吸收测定法）。使用Wilcoxon符号秩检验分析RYGB后的变化。CRF变化与体力活动变化之间的关系用年龄和术前BMI校正的斯皮尔曼相关性进行分析。结果纳入45名女性（中位[P-25-P-75]年龄，43.0 [38.0-51.0]岁; BMI，42.6 [40.0-45.5] kg/m2）。RYGB后6个月的平均（SD）体重减轻为-27.5（7.9）kg（P < 0.001）。绝对V？O（2）峰下降0.35（0.50）L/min（P < 0.001），相对V？O（2）峰倾向于增加1.7（5.3）mL/kg/min（P = 0.06），均具有较大的个体间变异性。根据客观加速度计数据，每日步数和中到剧烈体力活动分别增加了1275（3164）步/d和7.6（19.3）min/d（均P < 0.05）。绝对值V的变化？O（2）峰与中到剧烈体力活动的变化呈正相关（r = 0.35; P = 0.03）。结论RYGB后6个月观察到的绝对CRF下降可以通过增加习惯性体力活动来预防。
Background Exercise training optimizes cardiorespiratory fitness (CRF) after bariatric surgery, but the effect of spontaneous physical activity is not well known. This study aimed to objectively quantify changes in CRF and habitual physical activity 6 months after bariatric surgery and to examine whether change in CRF was related to change in physical activity. Methods Secondary analyses were performed on data from women who underwent Roux-en-Y gastric bypass (RYGB) between 2010 and 2014. Measurements were performed before and 6 months after RYGB and included V?O(2)peak (graded maximal exercise test on a cycle ergometer), habitual physical activity (Actigraph GT3x accelerometer worn during 7 days), and body composition (DXA absorptiometry). Changes after RYGB were analyzed using Wilcoxon signed-rank test. Relations between change in CRF and change in physical activity were analyzed with Spearman correlations adjusted on age and preoperative BMI. Results Forty-five women (median [P-25-P-75] age, 43.0 [38.0-51.0] year; BMI, 42.6 [40.0-45.5] kg/m(2)) were included. Mean (SD) weight loss 6 months after RYGB was - 27.5 (7.9) kg (P < 0.001). Absolute V?O(2)peak decreased by 0.35 (0.50) L/min (P < 0.001) and relative V?O(2)peak tended to increase by 1.7 (5.3) mL/kg/min (P = 0.06), both with large inter-individual variability. Based on objective accelerometry data, daily steps and moderate-to-vigorous physical activity increased by 1275 (3164) steps/day and 7.6 (19.3) min/day, respectively (both P < 0.05). Change in absolute V?O(2)peak was positively related to change in moderate-to-vigorous physical activity (r = 0.35; P = 0.03). Conclusions The decrease in absolute CRF observed 6 months after RYGB might be prevented by increasing habitual physical activity.