Eight-month follow-up of physical activity and central adiposity: results from an Internet-delivered randomized control trial intervention

Lucas J Carr; R Todd Bartee; Chris M Dorozynski; James F Broomfield; Marci L Smith; Derek T Smith

doi:10.1123/jpah.6.4.444

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Eight-month follow-up of physical activity and central adiposity: results from an Internet-delivered randomized control trial intervention

Journal article

Peer reviewed

Eight-month follow-up of physical activity and central adiposity: results from an Internet-delivered randomized control trial intervention

Lucas J Carr, R Todd Bartee, Chris M Dorozynski, James F Broomfield, Marci L Smith and Derek T Smith

Journal of physical activity & health, Vol.6(4), pp.444-455

07/2009

DOI: 10.1123/jpah.6.4.444

PMCID: PMC2820723

PMID: 19842458

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Abstract

Less than half of U.S. adults engage in the recommended amount of physical activity (PA). Internet-delivered PA programs increase short-term PA but long-term adherence is largely equivocal. To determine whether increased PA following the 16-week Internet-delivered Active Living Every Day (ALED-I) program is maintained 8 months later in sedentary and overweight rural adults. In our previous randomized controlled trial (N = 32; 18 intent-to-treat controls, 14 ALED-I interventions), the ALED-I group increased PA (+1384 steps/day; E.S. = 0.95) and reduced central adiposity. Nine original intervention participants and ten delayed intent-to-treat control participants completed ALED-I and an 8-month followup. Pedometer-measured PA, anthropometric variables, and cardiometabolic disease risk factors were assessed at baseline, postintervention, and at 8 months. Control crossover participants increased PA (+1337 steps/ day; P = .04). Eight months following completion of ALED-I (N = 19), PA levels relapsed (-1340 steps/day) and were similar to levels before the intervention (6850 +/- 471 steps/day vs. 6755 +/- 543 steps/day; P = .89). Total cholesterol and triglycerides improved, -9.9% and -18.2%, respectively, and reductions in central adiposity were maintained (97.1 +/- 2.2 cm vs. 97.2 +/- 2.2 cm; P = .66). The ALED-I intervention was efficacious in the short-term but did not produce longer-term adherence to PA. Future theory-based internet-delivered interventions that produce habituation of increased PA are warranted.

Body Mass Index

Follow-Up Studies

Humans

Middle Aged

Male

Health Behavior

Monitoring, Ambulatory

Cross-Over Studies

Exercise

Adiposity

Adult

Female

Internet

Body Weights and Measures

Details

Title: Subtitle: Eight-month follow-up of physical activity and central adiposity: results from an Internet-delivered randomized control trial intervention
Creators: Lucas J Carr - Division of Kinesiology and Health, University of Wyoming, USA
R Todd Bartee
Chris M Dorozynski
James F Broomfield
Marci L Smith
Derek T Smith
Resource Type: Journal article
Publication Details: Journal of physical activity & health, Vol.6(4), pp.444-455
DOI: 10.1123/jpah.6.4.444
PMID: 19842458
PMCID: PMC2820723
NLM abbreviation: J Phys Act Health
ISSN: 1543-3080
eISSN: 1543-5474
Publisher: United States
Grant note: P20 RR016474 / NCRR NIH HHS P20 RR016474-05 / NCRR NIH HHS
Language: English
Date published: 07/2009
Academic Unit: Health, Sport, and Human Physiology
Record Identifier: 9984002408002771

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