Predictors of Physical Activity After Gastric Bypass—a Prospective Study

  • Irmelin Bergh
  • Ingela Lundin Kvalem
  • Tom Mala
  • Bjørge Herman Hansen
  • Falko F. Sniehotta
Original Contributions

DOI: 10.1007/s11695-017-2593-x

Cite this article as:
Bergh, I., Kvalem, I.L., Mala, T. et al. OBES SURG (2017). doi:10.1007/s11695-017-2593-x

Abstract

Background

Most patients do not meet the recommended level of physical activity after bariatric surgery, and psychological factors underlying postoperative physical activity remain poorly understood. This study aimed at identifying self-regulatory predictors of physical activity after bariatric surgery.

Methods

Questionnaire data including self-regulation variables and the short-version of the International Physical Activity Questionnaire were obtained in a prospective cohort of 230 patients 1 year after Roux-en-Y gastric bypass. The study sample consisted of participants consenting to wear an ActiGraph GT3X+ accelerometer for seven consecutive days, 18–24 months after surgery (n = 120).

Results

A total of 112 participants with complete self-report data provided valid accelerometer data. Mean age was 46.8 years (SD = 9.3), and 81.3% was women. Preoperative and postoperative BMI was 44.8 ± 5.5 and 30.6 ± 5.0 kg/m2, respectively. Total weight loss was 28.9% (SD = 7.5). By objective measures, 17.9% of the participants met the recommended level of moderate-to-vigorous-intensity of physical activity of ≥150 min/week, whereas 80.2% met the recommended level according to self-reported measures. Being single, higher education level, and greater self-regulation predicted objective physical activity in multivariate regression analysis. Greater self-regulation also predicted self-reported physical activity. Weight loss 1 year after surgery was not associated with self-reported or objectively measured physical activity.

Conclusions

Despite large differences between accelerometer-based and subjective estimates of physical activity, the associations of self-regulatory factors and weight loss with postoperative physical activity did not vary depending on mode of measurement. Self-regulation predicted both objective and self-reported physical activity. Targeting patients’ self-regulatory ability may enhance physical activity after gastric bypass.

Keywords

Physical activity Bariatric surgery Gastric bypass Self-regulation Accelerometer Behavior change 

Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  • Irmelin Bergh
    • 1
  • Ingela Lundin Kvalem
    • 1
  • Tom Mala
    • 2
  • Bjørge Herman Hansen
    • 3
  • Falko F. Sniehotta
    • 4
  1. 1.Department of PsychologyUniversity of OsloOsloNorway
  2. 2.Center for Morbid Obesity and Bariatric SurgeryOslo University HospitalOsloNorway
  3. 3.Department of Sports MedicineNorwegian School of Sport SciencesOsloNorway
  4. 4.Institute of Health & Society, Fuse—The Centre for Translational Research in Public Health Institute of Health & Society Faculty of Medical SciencesNewcastle UniversityNewcastleUK