Document Detail

Physical activity self-monitoring and weight loss: 6-month results of the SMART trial.
MedLine Citation:
PMID:  21200337     Owner:  NLM     Status:  MEDLINE    
INTRODUCTION: Weight loss has been associated with higher physical activity (PA) levels and frequent dietary self-monitoring. Less is known about how PA self-monitoring affects adherence to PA goals, PA levels, and weight change.
METHODS: The SMART Trial is a clinical weight loss trial in which 210 overweight adults were randomized equally to one of three arms: 1) paper record (PR), 2) personal digital assistant with self-monitoring software (PDA), and 3) PDA with daily tailored feedback message (PDA + FB). PA self-monitoring and adherence to PA goals were based on entries in weekly submitted diaries. PA levels were measured via self-report by the past 6-month Modifiable Activity Questionnaire at baseline and 6 months.
RESULTS: Data are presented on 189 participants with complete 6-month PA data (84% female, 77% white, mean age = 47.3 ± 8.8 yr, mean body mass index = 34.1 ± 4.5 kg·m(-2)). Median PA level was 7.96 MET·h·wk(-1) at baseline and 13.4 MET·h·wk(-1) at 6 months, with significant PA increases in all three arms. PDA + FB arm had a higher mean number of weekly self-monitoring entries than the PR arm (3.4 vs 2.4, P = 0.003) and were more likely to maintain high (i.e., 100%) adherence to PA goals over time than the PDA (P = 0.02) or PR arms (P = 0.0003). Both PA self-monitoring and adherence to PA goals were related to higher PA levels at 6 months. A higher mean rate of PA self-monitoring was associated with a greater percentage of weight decrease (ρ = -0.49, P < 0.0001) at 6 months.
CONCLUSIONS: PA self-monitoring and adherence to PA goals were more likely in participants in the PDA + FB arm and in turn predicted higher PA levels and weight loss.
Molly B Conroy; Kyeongra Yang; Okan U Elci; Kelley Pettee Gabriel; Mindi A Styn; Jing Wang; Andrea M Kriska; Susan M Sereika; Lora E Burke
Related Documents :
8348867 - Diagnostic laparoscopy: reducing the number of normal appendectomies.
9678367 - Colorectal cancer: comparison of laparoscopic with open approaches.
20065567 - Polyglactine/polypropylene mesh vs. propylene mesh: is there a need for newer prosthesi...
23162217 - Evaluation of recombinant human platelet-derived growth factor as an agent for wound be...
22127407 - Long-term safety and efficacy of renin-angiotensin blockade in atherosclerotic renal ar...
1839437 - Amlodipine compared to nitrendipine for the treatment of mild-to-moderate hypertension.
Publication Detail:
Type:  Journal Article; Randomized Controlled Trial; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  Medicine and science in sports and exercise     Volume:  43     ISSN:  1530-0315     ISO Abbreviation:  Med Sci Sports Exerc     Publication Date:  2011 Aug 
Date Detail:
Created Date:  2011-07-18     Completed Date:  2011-11-29     Revised Date:  2014-04-10    
Medline Journal Info:
Nlm Unique ID:  8005433     Medline TA:  Med Sci Sports Exerc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1568-74     Citation Subset:  IM; S    
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Body Mass Index
Diagnostic Self Evaluation*
Feeding Behavior / physiology
Middle Aged
Monitoring, Physiologic / methods*
Motor Activity / physiology*
Overweight / therapy*
Patient Compliance
Weight Loss / physiology*
Grant Support
K23 HL085405/HL/NHLBI NIH HHS; K23 HL085405/HL/NHLBI NIH HHS; K24 NR010742-01/NR/NINR NIH HHS; K24 NR010742-02/NR/NINR NIH HHS; K24 NR010742-03/NR/NINR NIH HHS; R01 DK071817/DK/NIDDK NIH HHS; R01 DK071817/DK/NIDDK NIH HHS; R01 DK071817-01/DK/NIDDK NIH HHS; R01 DK071817-02/DK/NIDDK NIH HHS; R01 DK071817-03/DK/NIDDK NIH HHS; R01 DK071817-04/DK/NIDDK NIH HHS; R01 DK071817-05/DK/NIDDK NIH HHS; R01 DK071817-05S1/DK/NIDDK NIH HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  The Association Between Physical Activity and Kidney Function: NHANES.
Next Document:  Leukocyte ?2-Adrenergic Receptor Expression in Response to Resistance Exercise.