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Cell phone intervention for you (CITY): A randomized, controlled trial of behavioral weight loss intervention for young adults using mobile technology.

Publication ,  Journal Article
Svetkey, LP; Batch, BC; Lin, P-H; Intille, SS; Corsino, L; Tyson, CC; Bosworth, HB; Grambow, SC; Voils, C; Loria, C; Gallis, JA; Schwager, J ...
Published in: Obesity (Silver Spring)
November 2015

OBJECTIVE: To determine the effect on weight of two mobile technology-based (mHealth) behavioral weight loss interventions in young adults. METHODS: Randomized, controlled comparative effectiveness trial in 18- to 35-year-olds with BMI ≥ 25 kg/m(2) (overweight/obese), with participants randomized to 24 months of mHealth intervention delivered by interactive smartphone application on a cell phone (CP); personal coaching enhanced by smartphone self-monitoring (PC); or Control. RESULTS: The 365 randomized participants had mean baseline BMI of 35 kg/m(2) . Final weight was measured in 86% of participants. CP was not superior to Control at any measurement point. PC participants lost significantly more weight than Controls at 6 months (net effect -1.92 kg [CI -3.17, -0.67], P = 0.003), but not at 12 and 24 months. CONCLUSIONS: Despite high intervention engagement and study retention, the inclusion of behavioral principles and tools in both interventions, and weight loss in all treatment groups, CP did not lead to weight loss, and PC did not lead to sustained weight loss relative to Control. Although mHealth solutions offer broad dissemination and scalability, the CITY results sound a cautionary note concerning intervention delivery by mobile applications. Effective intervention may require the efficiency of mobile technology, the social support and human interaction of personal coaching, and an adaptive approach to intervention design.

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Published In

Obesity (Silver Spring)

DOI

EISSN

1930-739X

Publication Date

November 2015

Volume

23

Issue

11

Start / End Page

2133 / 2141

Location

United States

Related Subject Headings

  • Young Adult
  • Weight Reduction Programs
  • Weight Loss
  • Telemedicine
  • Social Support
  • Overweight
  • Obesity
  • Mobile Applications
  • Male
  • Humans
 

Citation

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Svetkey, L. P., Batch, B. C., Lin, P.-H., Intille, S. S., Corsino, L., Tyson, C. C., … Bennett, G. G. (2015). Cell phone intervention for you (CITY): A randomized, controlled trial of behavioral weight loss intervention for young adults using mobile technology. Obesity (Silver Spring), 23(11), 2133–2141. https://doi.org/10.1002/oby.21226
Svetkey, Laura P., Bryan C. Batch, Pao-Hwa Lin, Stephen S. Intille, Leonor Corsino, Crystal C. Tyson, Hayden B. Bosworth, et al. “Cell phone intervention for you (CITY): A randomized, controlled trial of behavioral weight loss intervention for young adults using mobile technology.Obesity (Silver Spring) 23, no. 11 (November 2015): 2133–41. https://doi.org/10.1002/oby.21226.
Svetkey LP, Batch BC, Lin P-H, Intille SS, Corsino L, Tyson CC, et al. Cell phone intervention for you (CITY): A randomized, controlled trial of behavioral weight loss intervention for young adults using mobile technology. Obesity (Silver Spring). 2015 Nov;23(11):2133–41.
Svetkey, Laura P., et al. “Cell phone intervention for you (CITY): A randomized, controlled trial of behavioral weight loss intervention for young adults using mobile technology.Obesity (Silver Spring), vol. 23, no. 11, Nov. 2015, pp. 2133–41. Pubmed, doi:10.1002/oby.21226.
Svetkey LP, Batch BC, Lin P-H, Intille SS, Corsino L, Tyson CC, Bosworth HB, Grambow SC, Voils C, Loria C, Gallis JA, Schwager J, Bennett GG. Cell phone intervention for you (CITY): A randomized, controlled trial of behavioral weight loss intervention for young adults using mobile technology. Obesity (Silver Spring). 2015 Nov;23(11):2133–2141.
Journal cover image

Published In

Obesity (Silver Spring)

DOI

EISSN

1930-739X

Publication Date

November 2015

Volume

23

Issue

11

Start / End Page

2133 / 2141

Location

United States

Related Subject Headings

  • Young Adult
  • Weight Reduction Programs
  • Weight Loss
  • Telemedicine
  • Social Support
  • Overweight
  • Obesity
  • Mobile Applications
  • Male
  • Humans