Cardiopulmonary Physiotherapy Laboratory, Nucleus of Research in Physical Exercise, Federal University of São Carlos, Rod. Washington Luis, km 235, 13565-905, São Carlos, São Paulo, Brazil.
Obes Surg. 2011 Nov;21(11):1739-49. doi: 10.1007/s11695-010-0319-4.
Obesity is a major public health concern on a global scale. Bariatric surgery is among the treatment options, resulting in significant and sustainable weight loss as well as amelioration of comorbidities. The purpose of this study was to evaluate whether a 12-week aerobic exercise program positively impacts heart rate variability (HRV) and functional capacity after gastric bypass surgery (GBS) in a female cohort.
Of the 52 patients initially recruited, 21 were randomized to a training group (TG) or control group and successfully completed the study. Patients were tested on two occasions: 1 week before GBS and 4 months after GBS. Anthropometric variables, body composition, record of heart rate and R-R intervals, and 6-min walk test (6MWT) were assessed at both time points. The TG underwent an aerobic exercise training program on a treadmill (1-h session, totaling 36 sessions over 12 weeks).
The main findings from this study were: (1) only the TG demonstrated a significant increase (p < 0.05) in all indexes of heart rate variability (HRV) after 12 weeks of aerobic exercise training and (2) only the TG demonstrated a significant increase (p < 0.05) in 6MWT distance and decrease in diastolic blood pressure after aerobic exercise training.
We conclude that 12 weeks of aerobic exercise training improves cardiac autonomic modulation and functional capacity 4 months after GBS.
肥胖是一个全球性的主要公共卫生问题。减重手术是治疗选择之一，可显著且可持续地减轻体重，并改善合并症。本研究的目的是评估 12 周有氧运动方案是否对女性队列胃旁路手术后的心率变异性（HRV）和功能能力产生积极影响。
在最初招募的 52 名患者中，21 名随机分为训练组（TG）或对照组，并成功完成了研究。患者在两次就诊时接受测试：胃旁路手术前 1 周和胃旁路手术后 4 个月。在两个时间点评估了人体测量变量、身体成分、心率和 R-R 间隔记录以及 6 分钟步行测试（6MWT）。TG 在跑步机上进行有氧运动训练（1 小时/次，12 周共 36 次）。
本研究的主要发现包括：（1）仅在 TG 中，在进行 12 周有氧运动训练后，所有 HRV 指标均显著增加（p<0.05）；（2）仅在 TG 中，有氧运动训练后 6MWT 距离显著增加（p<0.05），舒张压显著降低。
我们得出结论，12 周的有氧运动训练可改善胃旁路手术后 4 个月的心脏自主调节和功能能力。
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