Objectively-assessed physical activity and weight change in young adults: a randomized controlled trial
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Unick, Jessica L, et al. Objectively-assessed Physical Activity and Weight Change In Young Adults: a Randomized Controlled Trial. BioMed Central, 2017. https://doi.org/10.17615/pdes-er39APA
Unick, J., Lang, W., Williams, S., Bond, D., Egan, C., Espeland, M., Wing, R., & Tate, D. (2017). Objectively-assessed physical activity and weight change in young adults: a randomized controlled trial. BioMed Central. https://doi.org/10.17615/pdes-er39Chicago
Unick, Jessica L, Wei Lang, Samantha E Williams, Dale S Bond, Caitlin M Egan, Mark A Espeland, Rena R Wing et al. 2017. Objectively-Assessed Physical Activity and Weight Change In Young Adults: a Randomized Controlled Trial. BioMed Central. https://doi.org/10.17615/pdes-er39- Creator
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Unick, Jessica L
- Other Affiliation: Brown University and the Miriam Hospital’s Weight Control and Diabetes Research Center, Providence, USA
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Lang, Wei
- Other Affiliation: Wake Forest School of Medicine, Winston-Salem, USA
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Williams, Samantha E
- Other Affiliation: Brown University and the Miriam Hospital’s Weight Control and Diabetes Research Center, Providence, USA
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Bond, Dale S
- Other Affiliation: Brown University and the Miriam Hospital’s Weight Control and Diabetes Research Center, Providence, USA
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Egan, Caitlin M
- Other Affiliation: Brown University and the Miriam Hospital’s Weight Control and Diabetes Research Center, Providence, USA
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Espeland, Mark A
- Other Affiliation: Wake Forest School of Medicine, Winston-Salem, USA
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Wing, Rena R
- Other Affiliation: Brown University and the Miriam Hospital’s Weight Control and Diabetes Research Center, Providence, USA
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Tate, Deborah
- Affiliation: Gillings School of Global Public Health
- Abstract
- Background Reductions in physical activity (PA) are common throughout young adulthood and low PA is associated with weight gain. The SNAP Trial previously reported that two self-regulation approaches to weight gain prevention reduced weight gain over a 2-year period in 18–35 year olds. Presented here are secondary analyses examining changes in PA and the relationship between PA and weight change over 2 years. Methods 599 young adults (age: 27.4 ± 4.4 yrs.; BMI: 25.4 ± 2.6 kg/m2) were randomly assigned to 1 of 3 treatment arms: Small Changes (reduce calorie intake by 100 kcals/day & add 2000 steps/day), Large Changes (lose 2.3–4.5 kg initially & increase PA to ≥250 min/wk), or Self-guided (control condition). Small and Large Changes received 10, face-to-face group sessions (months 1–4), and two 4-week refresher courses each subsequent year. Body weight and PA were objectively-measured at baseline, 4 months, 1 and 2 years. Daily steps and bout-related moderate-to-vigorous intensity PA (MVPA: ≥3 METs, ≥10-min bouts) was calculated. Results Changes in bout-related MVPA and daily steps did not differ among treatment groups over the 2-year period (p’s > 0.16). Collapsed across groups, participants gaining >1 lb. (n = 187; 39.6%) had smaller changes in bout-related MVPA at 4 months, 1 and 2 years relative to those maintaining or losing weight (≤1 lb. weight gain; n = 282, 60.4%, p’s < 0.05). Averaged across time points, this difference equated to 47.8 min/week. Those gaining and not gaining >1 lb. did not differ on daily steps (p’s > 0.10). Among participants engaging in ≥250 min/wk. of MVPA at 2 years (n = 181), 30% gained >1 lb. from baseline to 2 years, which was not different from those engaging in 150–250 min/wk. (n = 87; 36%; p = 0.40), but this percentage was significantly lower when compared to those engaging in <150 min/wk. (n = 176; 49%; p < 0.001). Conclusions On average, PA differences were not observed between young adults assigned to small or large changes self-regulation interventions to prevent weight gain. Regardless of group assignment, higher levels of MVPA were associated with better weight gain prevention over 2 years. Our data suggest that achieving >150 min/week of MVPA is needed for weight gain prevention and that increasing MVPA, rather than steps, should be targeted. Trial registration www.clinicaltrials.gov (NCT01183689). Registered Aug 13, 2010.
- Date of publication
- December 4, 2017
- DOI
- Identifier
- Resource type
- Article
- Rights statement
- In Copyright
- Rights holder
- The Author(s).
- Journal title
- International Journal of Behavioral Nutrition and Physical Activity
- Journal volume
- 14
- Journal issue
- 1
- Page start
- 165
- Language
- English
- Bibliographic citation
- International Journal of Behavioral Nutrition and Physical Activity. 2017 Dec 04;14(1):165
- Publisher
- BioMed Central
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