Abstract
Purpose
Energy and fatigue are thought to improve after bariatric surgery. Such improvements could be related to weight loss and/or increased engagement in day-to-day health behaviors, such as moderate-to-vigorous physical activity (MVPA). This study used ecological momentary assessment (EMA) to evaluate several aspects of energy/fatigue in real-time in patients’ natural environment during the first year after surgery and assessed the associations of percent total weight loss (%TWL) and daily MVPA with daily energy/fatigue levels.
Methods
Patients (n = 71) undergoing Roux-en-Y gastric bypass or sleeve gastrectomy rated their energy, alertness and attentiveness (averaged to create an “attentiveness” rating), and tiredness and sleepiness (averaged to create a “fatigue” rating) via smartphone-based EMA at 4 semi-random times daily for 10 days at pre-surgery and 3-, 6-, and 12 months post-surgery. Daily MVPA minutes were assessed via accelerometry. Weight was measured in clinic.
Results
Energy ratings initially increased from pre- to post-surgery, before leveling off/decreasing by 12 months (p < 0.001). Attentiveness and fatigue ratings did not change over time. %TWL was unrelated to any ratings, while MVPA related to both energy and attentiveness but not fatigue. Participants reported more energy on days with more total MVPA min (p = 0.03) and greater attentiveness on days with more total (p < 0.001) and bouted (p = 0.02) MVPA.
Conclusions
While more research is needed to confirm causality, results suggest that greater daily MVPA is associated with increased daily energy and attentiveness among bariatric surgery patients, independent of %TWL. Findings add to growing evidence of MVPA’s potential benefits beyond energy expenditure in the context of bariatric surgery.
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Funding
This work was supported by the National Institute of Diabetes and Digestive and Kidney Diseases (R01 DK108579) and the National Heart, Lung, and Blood Institute (T32 HL076134; principal investigator: Rena Wing; recipients: Leah Schumacher and Hallie Espel-Huynh).
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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants included in the study.
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Drs. Schumacher, Espel-Huynh, Thomas, Vithiananthan, Jones, and Bond have received grant funding from the NIH. Dr. Thomas reports board membership, consultancy, and stock ownership for Lumme Heatlh Inc.
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Key Points
• Energy increased after surgery while attentiveness and fatigue did not improve.
• Patients reported more energy on days they accrued more total MVPA minutes.
• Patients reported greater attentiveness on days with more total and bouted MVPA.
• Percent total weight loss was unrelated to perceived energy, attentiveness, and fatigue.
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Schumacher, L.M., Espel-Huynh, H.M., Thomas, J.G. et al. Energy, Attentiveness, and Fatigue After Bariatric Surgery and Associations with Daily Physical Activity and Weight Loss: an Ecological Momentary Assessment Study. OBES SURG 31, 4893–4900 (2021). https://doi.org/10.1007/s11695-021-05662-w
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DOI: https://doi.org/10.1007/s11695-021-05662-w