Key result
Sleeve gastrectomy lowered the net energy cost of walking at 6 months post-surgery compared to pre-surgery baseline across all three treadmill protocol stages.
Why the study?
Obesity is associated with a higher energy cost of walking, but the impact of sleeve gastrectomy on walking economy in subjects with severe obesity needed evaluation.
Does sleeve gastrectomy improve walking economy in patients with severe obesity?
Cohort
Does sleeve gastrectomy improve walking economy in patients with severe obesity?
Sleeve gastrectomy significantly improves walking economy and lowers energy expenditure in patients with severe obesity at 6 months post-surgery.
SG may improve walking economy after sleeve gastrectomy in severe obesity; leaves open effects on daily function or clinical outcomes.
BACKGROUND: Obesity is associated with a higher energy cost of walking which affects activities of daily living. Bariatric surgery with sleeve gastrectomy (SG) has beneficial effects on weight loss and comorbidities. PURPOSE: The aim of this study was to analyze the impact of SG on walking economy in subjects with severe obesity. METHODS: This observational cohort study included all patients with morbid obesity who were considered suitable candidates for SG between June 2017 and June 2019. Each patient underwent an incremental cardiopulmonary exercise test on a treadmill (modified Bruce protocol) one month before and six months after SG. Data on the energy cost of walking were recorded during three protocol stages (stage 0-slow flat walking: speed 2.7 km/h, slope 0%; stage ½-slow uphill walking: speed 2.7 km/h, slope 5%; stage 1-fast uphill walking: speed 4.0 km/h, slope 8%). The net energy cost of walking (measured in J/m and J/kg/m) of the subjects was lower compared to pre-SG at all three protocol stages. This improvement was also confirmed when the subjects were grouped by gender and obesity classes. CONCLUSION: After a significant weight loss induced by SG, regardless of the severity of obesity and gender, patients exhibited a lower energy expenditure and an improved walking economy. These changes make it easier to perform daily routines and may facilitate an increase in physical activity.
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Vecchiato et al. (2023) conducted a cohort in Morbid obesity. Sleeve gastrectomy vs. Pre-sleeve gastrectomy baseline was evaluated on Net energy cost of walking. Sleeve gastrectomy lowered the net energy cost of walking at 6 months post-surgery compared to pre-surgery baseline across all three treadmill protocol stages.
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