Motivational profiles and change in physical activity during a weight loss intervention: a secondary data analysis

International Journal of Behavioral Nutrition and Physical Activity

Sarah J. Schmiege¹  David E. Conroy²  Suzanne Phelan³  Angela D. Bryan⁴  Danielle M. Ostendorf⁵  Victoria A. Catenacci⁵ 

[1] Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, USA;Department of Kinesiology and Human Development and Family Studies, The Pennsylvania State University, University Park, State College, PA, USA;Department of Preventive Medicine, Northwestern University, Chicago, IL, USA;Department of Kinesiology, California Polytechnic State University, San Luis Obispo, CA, USA;Department of Psychology and Neuroscience, University of Colorado Boulder, Boulder, CO, USA;Division of Endocrinology, Metabolism, and Diabetes, Department of Medicine, University of Colorado Anschutz Medical Campus, Campus Box C263, 12348 E. Montview Boulevard, 80045, Aurora, CO, USA;

关键词: Motivation;    Exercise;    Weight loss;    Obesity;    Latent profile analysis;   

DOI  :  10.1186/s12966-021-01225-5

来源: Springer

【 摘 要 】

BackgroundHigh levels of moderate-to-vigorous intensity physical activity (MVPA) are strongly associated with sustained weight loss, however the majority of adults are unsuccessful in maintaining high levels of MVPA long-term. Our goal was to identify profiles based on exercise motives, and examine the association between motivational profile and longitudinal changes in MVPA during a weight loss intervention.MethodsAdults with overweight or obesity (n = 169, mean ± SE; age 39 ± 0.7 years, BMI 34.4 ± 0.3 kg/m2, 83% female) underwent an 18-month behavioral weight loss program, including 6 months of supervised exercise, followed by 6 months of unsupervised exercise. Participants self-reported behavioral regulations for exercise at baseline (BREQ-2). Latent profile analysis identified subgroups from external, introjected, identified, and intrinsic regulations measured at baseline. Mean differences in device-measured total MVPA were compared across motivational profiles at baseline, after 6 months of supervised exercise and after a subsequent 6 months of unsupervised exercise.ResultsThree motivational profiles emerged: high autonomous (high identified and intrinsic, low external regulations; n = 52), high combined (high scores on all exercise regulations; n = 25), and moderate combined (moderate scores on all exercise regulations; n = 92). Motivational profile was not associated with baseline level of MVPA or the increase in MVPA over the 6-month supervised exercise intervention (high autonomous: 21 ± 6 min/d; high combined: 20 ± 9 min/d; moderate combined: 33 ± 5 min/d; overall P > 0.05). However, during the transition from supervised to unsupervised exercise, MVPA decreased, on average, within all three profiles, but the high autonomous profile demonstrated the least attenuation in MVPA (− 3 ± 6 min/d) compared to the moderate combined profile (− 20 ± 5 min/d; P = 0.043).ConclusionsResults were in alignment with the Self-Determination Theory. Adults motivated by autonomous reasons (value benefits of exercise, intrinsic enjoyment) may be more likely to sustain increases in MVPA once support is removed, whereas participants with moderate-to-high scores on all types of exercise regulations may need additional long-term support in order to sustain initial increases in MVPA.Clinical trial registrationNCT01985568. Registered 24 October 2013.

【 授权许可】

CC BY