Assessment of Cardiopulmonary Responses to Treadmill Walking Following Gastric Bypass Surgery

Browning, Matthew G.; Franco, R. Lee; Herrick, James B.; Arrowood, James A.; Evans, Ronald K.

doi:10.1007/s11695-016-2259-0

Cited by 17 publications

(26 citation statements)

References 36 publications

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“…Previous studies have also investigated CPET parameters 3–12 months after sleeve gastrectomy or gastric bypass surgery [11, 24, 29-31]. To our knowledge, this is the first study which has correlated the amount of weight loss that is needed to result in improvement of aerobic capacity.…”

Section: Discussionmentioning

confidence: 99%

“…Improved aerobic capacity may be due to better efficiency in performing activities rather than real improvements in cardiorespiratory or muscle function. Even though an increase of VO 2 peak per body weight (mL/min/kg) confirmed better physical functioning and mobility [29-31], absolute aerobic capacity in terms of VO 2 peak (mL/min) was unchanged after bariatric surgery. Nevertheless, in the group which had more than 18% weight reduction, VO 2 peak (mL/min) was significantly reduced after surgery.…”

Section: Discussionmentioning

confidence: 99%

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The Amount of Weight Loss Six Months after Bariatric Surgery: It Makes a Difference

Nedeljkovic‐Arsenovic¹,

Banović²,

Radenković³

et al. 2019

Obes Facts

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Background: Bariatric surgery, especially Roux-en-Y gastric bypass (RYGB), has become the most frequently used therapy for morbid obesity. Objectives: The aim of this study was to examine the effects of surgically induced weight loss on cardiopulmonary function 6 months after the procedure, as well as the effect of such an intervention on well-known risk factors for cardiovascular diseases. Methods: This is a cross-sectional study on 66 morbidly obese patients (BMI ≥40 or ≥35 kg/m² with present comorbidities), comparing their cardiopulmonary function prior to and 6 months after RYGB surgery. Results: The substantial amount of weight loss (29.80 ± 13.27 kg) after RYGB surgery was associated with significant reduction of comorbidities, especially diabetes and sedentary lifestyle (p = 0.005 and p = 0.002, respectively). Regarding functional capacity, there was significant increase in peak oxygen uptake (VO₂ peak, p = 0.003), duration of exercise testing, metabolic equivalents (exercise time and METs, p < 0.001), and in peak O₂ pulse. These findings were particularly pronounced in a group of patients who had lost more than 18% of initial weight. Conclusions: Reduction of body weight after RYGB surgery is associated with significantly improved cardiorespiratory function 6 months after surgery, especially in patients who lost more than 18% of their initial body weight. In addition, substantial decreases in body weight were also associated with a reduction of cardiovascular risk factors such as diabetes, smoking, hypertriglyceridemia, and sedentary lifestyle.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The Amount of Weight Loss Six Months after Bariatric Surgery: It Makes a Difference

Nedeljkovic‐Arsenovic¹,

Banović²,

Radenković³

et al. 2019

Obes Facts

View full text Add to dashboard Cite

show abstract

“…However, treadmill exercise testing studies before and after bariatric surgery showed indeed reduced metabolic costs of body weightbearing activities with lower ventilation cost and a higher dyspnea threshold level [8-10, 17, 19, 29]. However, treadmill studies showed unchanged or reduced absolute VO 2 max after surgery [10,12,17,19,20].…”

Section: Aerobic Exercise Capacitymentioning

confidence: 99%

“…Previous studies evaluating the aerobic exercise capacity (VO 2 max) with a cardiopulmonary exercise test (CPET) before and after bariatric surgery showed controversial results with either an increased [9,10], unchanged [11][12][13][14][15] or decreased VO 2 max [16][17][18][19][20]. This discrepancy results emerged from different population characteristics (body mass index (BMI), age, sex, comorbidities, etc.…”

Section: Introductionmentioning

confidence: 99%

Impact of Bariatric Surgery on Women Aerobic Exercise Capacity

et al. 2019

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Rationale Bariatric surgery has a considerable positive effect on weight loss and on metabolic and cardiovascular risks. It has therefore been extensively used this last decade to overcome obesity. However, the impact of this surgery on exercise capacity remains unclear. The aim of this study is to clarify the impact of a surgically induced weight loss on aerobic exercise capacity (VO 2 max) in a specific middle-aged female population. Methods Forty-two women with a body mass index > 40 kg/m 2 (age, 42 ± 13 years; weight, 117 ± 15 kg) underwent blood analyses and a cardiopulmonary exercise test (CPET) before and 1 year after bariatric surgery. CPET was performed on a cycloergometer. The first ventilatory threshold (VT1) was measured according to the V-slope method. Results Absolute VO 2 max was reduced by 10% after surgery (2.0 ± 0.4 vs 1.8 ± 0.4 l/min, p < 0.01) or increased when corrected for body weight (18 ± 4 vs 23 ± 4 l/min/kg, p < 0.001) or unchanged when expressed as percentage of predicted values (111 ± 21 vs 105 ± 22, p = 0.06). Weight loss did not affect ventilatory or chronotropic response but increased maximal respiratory exchange ratio (RER) (p < 0.001), decreased maximal O 2 pulse (p < 0.05) and VT1 in milliliters per minute (p < 0.01). By multivariable analysis, decreased absolute VO 2 max after weight loss was associated with increased maximal RER and reduced maximal O 2 pulse (p < 0.05, p < 0.01 respectively), possibly related to a muscular mass limitation. Conclusions Weight loss induced by bariatric surgery may reduce aerobic capacity in women in relation to muscle mass loss.

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“…En el paciente bariátrico, el objetivo de la evaluación es determinar la capacidad cardiorrespiratoria a través de una prueba de estrés cardiopulmonar que nos permita prescribir el ejercicio aeróbico y evaluar la respuesta al entrenamiento, teniendo en consideración sus experiencias previas habitualmente negativas relacionadas con el ejercicio y/o actividad física 8 . En la literatura revisada en la Tabla 2 6,[9][10][11][12][13][14][15][16][17][18] , la metodología más utilizadas es la evaluación directa del consumo máximo (VO 2max ) o pico de oxígeno mediante ergoespirometría, utilizando protocolos escalonados con duración de 5-12 min. Dentro de las evaluaciones indirectas la realización del protocolo de Astrand o Bruce puede entregar una estimación del VO 2max 19 y parámetros de carga interna y/o externa para la prescripción del ejercicio.…”

Section: Evaluación De La Capacidad Cardiorrespiratoriaunclassified

Recomendaciones de actividad física y ejercicio en el paciente adulto sometido a cirugía bariátrica. Documento de Consenso

et al. 2019

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Assessment of Cardiopulmonary Responses to Treadmill Walking Following Gastric Bypass Surgery

Cited by 17 publications

References 36 publications

The Amount of Weight Loss Six Months after Bariatric Surgery: It Makes a Difference

The Amount of Weight Loss Six Months after Bariatric Surgery: It Makes a Difference

Impact of Bariatric Surgery on Women Aerobic Exercise Capacity

Recomendaciones de actividad física y ejercicio en el paciente adulto sometido a cirugía bariátrica. Documento de Consenso

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