The Impact of Bariatric Surgery on Cardiopulmonary Function: Analyzing VO2 Recovery Kinetics

Remígio, Maria Inês; Cruz, Fernando Santa; Ferraz, Álvaro Antônio Bandeira; Remígio, Maria Cecília de Aguiar; Parente, Giordano Bruno; Nascimento, Igor José dos Santos; Brandão, Daniella Cunha; Andrade, Armèle Dornelas de; Neto, Fernando de Moraes; Campos, Josemberg Marins

doi:10.1007/s11695-018-3469-4

Cited by 11 publications

(15 citation statements)

References 19 publications

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“…Some studies have observed higher values of dyspnea and fatigue during maximal tests compared to a submaximal test (12,26), and in our study, volunteers also presented similar responses during CPX, with significantly higher dyspnea and fatigue in the legs. Moreover, when compared with other studies that also performed CPX in morbidly obese individuals (27,28), we observed that our volunteers presented a lower peak VO 2 value, even with our volunteers performing a maximal test (RER: 1.29 (1.2 to 1.3); HR%max: 93.3 (90.4 to 96.3). Although both exercise tests presented different intensity workloads (CPX, maximal characteristic; 2MST, submaximal characteristic), we verified that the 2MST presented satisfactory validity to evaluate FC in the studied population.…”

Section: Discussionsupporting

confidence: 43%

Validation of the two-minute step test in obese with comorbibities and morbidly obese patients

Ricci

Cabiddu

Jürgensen

et al. 2019

Braz J Med Biol Res

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Cardiopulmonary fitness assessment is a valuable resource to obtain quantitative indicators of an individual's physical performance. The cardiopulmonary exercise test (CPX), considered the gold standard test for this evaluation, is costly and difficult to be accessed by the general population. In order to make this evaluation more accessible, and to better reflect the performance of daily life activities, alternative tests were proposed. Morbidly obese patients present limitations that impair physical performance assessment and could benefit from a test of shorter duration, provided it is validated. This observational study aimed to validate the two-minute step test (2MST) as a tool to evaluate functional capacity (FC) in obese with comorbidities and morbidly obese patients, compared the 2MST with CPX as a measure of physical performance, and developed a predictive equation to estimate peak oxygen uptake (VO 2 ) in the 2MST. The CPX and the 2MST were performed and metabolic and ventilatory parameters were recorded in 31 obese individuals (BMI>35 kg/m 2 ). Pearson correlation and multiple linear regression analyses were performed to evaluate the peak VO 2 best predictors. Bland-Altman analysis was performed to assess the agreement between the two methods. Peak VO 2 measured by CPX and 2MST showed a strong correlation (r=0.70, P<0.001) and there was a moderate correlation between peak VO 2 of the 2MST and the number of up-and-down step cycles (UDS) (r=0.55; P=0.01). The reference equation obtained was: VO 2 (mL·kg -1 ·min -1 ) = 13.341 + 0.138 × total UDS – (0.183 × BMI), with an estimated standard error of 1.3 mL·kg -1 ·min -1 . The 2MST is a viable, practical, and easily accessible test for FC. UDS and BMI can predict peak VO 2 satisfactorily.

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Section: Discussionsupporting

confidence: 43%

Validation of the two-minute step test in obese with comorbibities and morbidly obese patients

Ricci

Cabiddu

Jürgensen

et al. 2019

Braz J Med Biol Res

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“…Study characteristics are summarized in (three studies 36,55,58 ) the most frequent. Besides, five studies used either gastric bypass or sleeve gastrectomy 51,53,54,57,64 and one study used biliopancreatic diversion with duodenal switch or sleeve gastrectomy. 59 All the studies used BMI to assess obesity and its evolution after surgery.…”

Section: Study Characteristicsmentioning

confidence: 99%

Effects of bariatric surgery on cardiorespiratory fitness: A systematic review and meta‐analysis

et al. 2021

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Although bariatric surgery (BS) is recognized as an effective strategy for body weight loss, its impact on cardiorespiratory fitness (CRF) is still unclear. We aimed to examine postoperative changes in CRF (VO 2max/peak ) and its relationship with weight loss among adults undergoing BS. We systematically searched the WoS, PubMed, MEDLINE, and Scopus databases. Observational and intervention studies were selected reporting the presurgery and postsurgery CRF, measured by breathby-breath VO 2 or its estimation. Eleven articles (312 patients) revealed that BS leads to a reduction in absolute VO 2max/peak in the short term (effect size, ES = À0.539; 95%CI = À0.708, À0.369; p < 0.001), and those patients who suffered a more significant decrease in BMI after BS also had a greater loss of absolute VO 2max/peak . However, VO 2max/peak relative to body weight increased after surgery (ES = 0.658; 95%CI = 0.473, 0.842; p < 0.001). An insufficient number of studies were found investigating medium and long-term changes in CRF after BS. This study provides moderate-quality evidence that the weight loss induced by BS can reduce CRF in the short term, which represents a therapeutic target to optimize BS outcomes. More high-quality studies are needed to evaluate the impact of BS on VO 2max/peak in the short, medium, and long term including normalized values for fat-free mass.

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“…VO2 max can also be estimated using equations incorporating age, body weight, gender, and power 19 . Correction factors and formula adjustments for obesity and body composition have been evaluated but not fully accepted 21,22 .…”

Section: Measures Of Fitness In Bariatric Surgery Patientsmentioning

confidence: 99%

The Impact of a Pre-operative Exercise Program on Patients Awaiting Bariatric Surgery

Kwok

Hardy

B̀ouchard

et al. 2016

Surgery for Obesity and Related Diseases

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The Impact of Bariatric Surgery on Cardiopulmonary Function: Analyzing VO2 Recovery Kinetics

Cited by 11 publications

References 19 publications

Validation of the two-minute step test in obese with comorbibities and morbidly obese patients

Validation of the two-minute step test in obese with comorbibities and morbidly obese patients

Effects of bariatric surgery on cardiorespiratory fitness: A systematic review and meta‐analysis

The Impact of a Pre-operative Exercise Program on Patients Awaiting Bariatric Surgery

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