Effects of 6 months supervised physical training on muscle strength and aerobic capacity in patients undergoing Roux-en-Y gastric bypass surgery: a randomized controlled trial

L H Mundbjerg, C R Stolberg, E-M Bladbjerg, P Funch-Jensen, C B Juhl, B Gram

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Obesity and physical inactivity are major health problems. Roux-en-Y gastric bypass (RYGB) surgery results in significant weight loss and reduces obesity-related morbidity and mortality. Physical activity lowers the risk of cardiovascular disease and premature death. The aims of this study were to elucidate the effects of RYGB followed by 6 months of supervised physical training on physical capacity. In a randomized controlled trial, 60 participants eligible for RYGB were randomized 6 months post-surgery to either two weekly physical training sessions for 26 weeks (INT) or a control group (CON). Aerobic capacity (VO2 max), muscle strength (MS) of the shoulder and hip and physical function were measured pre-surgery and 6, 12 and 24 months post-surgery. RYGB per se decreased MS in all tested muscle groups, had no effects on VO2 max but improved physical function. After the intervention, INT had a significant 0.33 L min-1 increase in VO2 max compared to CON (95% CI: 0.07-0.57, P = 0.013). Furthermore, MS in the hip adductor increased significantly with 13 N (95% CI: 3.6-22.4, P = 0.007) and a between-group difference was found in the Stair Climb Test (0.46 repetitions [95% CI: 0.02-0.91, P = 0.042]). The effects were not maintained at follow-up. Supervised physical training following RYGB improved VO2 max, hip MS and physical function, but the positive effects were not maintained at follow-up. While activities of daily life may become easier as a result of RYGB, the observed extensive post-operative loss of MS requires more attention to increase the patient's physical capacity prospectively.

Original languageEnglish
JournalClinical Obesity
Volume8
Issue number4
Pages (from-to)227-235
ISSN1758-8103
DOIs
Publication statusPublished - Aug 2018

Keywords

  • Bariatric surgery
  • aerobic capacity
  • muscle strength
  • physical training
  • Obesity, Morbid/physiopathology
  • Follow-Up Studies
  • Humans
  • Middle Aged
  • Male
  • Physical Therapists
  • Exercise
  • Adult
  • Female
  • Muscle Strength

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