|Grant Number:||5R01CA109858-05 Interpret this number|
|Primary Investigator:||Tompkins, Sara|
|Organization:||University Of Colorado|
|Project Title:||Mediators and Moderators of Exercise Behavior Change|
DESCRIPTION (provided by applicant): Rates of cancer and cardiovascular disease have shown very little improvement over the past two decades, and the incidence of Type II diabetes mellitus is increasing at an alarming rate. Recent reports estimate that approximately 30% of total cancer deaths are related to poor exercise and nutrition, and other reports have suggested that, when taking into consideration both cardiovascular disease and cancer, inactivity contributes to as many as 250,000 premature deaths per year (Booth et al., 2002). Despite the benefit of regular physical activity in the prevention of cancer and other debilitating illnesses, 75% of the U.S. population do not get the recommended amount of physical activity as defined by 30 minutes of moderate intensity physical activity 5 or more days per week (CDC, 2001), and 40% of the population is completely sedentary (USDHHS, 1996). The objective of the proposed research is to understand the mediators and moderators of a well tested, individually tailored, print-based intervention to increase exercise behavior among sedentary adults. Using a randomized, controlled intervention trial, the proposed study will address three primary and one secondary hypotheses: 1) A previously tested and validated exercise promotion intervention (c.f., Marcus et al., 1998) is successful at helping sedentary individuals initiate and maintain a moderate intensity physical activity regimen, as compared to a health and wellness control intervention, 2) Increases in positive attitudes, perceived normative support, self-efficacy, and intentions to exercise will mediate the effectiveness of the intervention, 3) That increased positive mood, and better temperature, stress, and lactate regulation immediately after exercise challenge (assessed in the laboratory) will moderate the effectiveness of the intervention, and 4) Secondarily, we will test whether gender, race/ethnicity, and two recently suggested genetic factors (BDNF and OPRM1) moderate the effectiveness of the intervention. The rigorous assessment of how and for whom an exercise promotion intervention is effective will provide information for future development of intervention strategies and content, as well as allow the targeting of exercise content to individuals for whom it is most likely to be effective.
Colorado stride (COSTRIDE): testing genetic and physiological moderators of response to an intervention to increase physical activity.
Authors: Bryan AD, Magnan RE, Hooper AE, Ciccolo JT, Marcus B, Hutchison KE
Source: Int J Behav Nutr Phys Act, 2013 Dec 21;10, p. 139.
EPub date: 2013 Dec 21.
Effects of current physical activity on affective response to exercise: physical and social-cognitive mechanisms.
Authors: Magnan RE, Kwan BM, Bryan AD
Source: Psychol Health, 2013;28(4), p. 418-33.
EPub date: 2012 Oct 23.
Physical activity and differential methylation of breast cancer genes assayed from saliva: a preliminary investigation.
Authors: Bryan AD, Magnan RE, Hooper AE, Harlaar N, Hutchison KE
Source: Ann Behav Med, 2013 Feb;45(1), p. 89-98.
Genetic Influences on Physiological and Subjective Responses to an Aerobic Exercise Session among Sedentary Adults.
Authors: Karoly HC, Stevens CJ, Magnan RE, Harlaar N, Hutchison KE, Bryan AD
Source: J Cancer Epidemiol, 2012;2012, p. 540563.
EPub date: 2012 Jul 29.
Aerobic capacity testing with inactive individuals: the role of subjective experience.
Authors: Magnan RE, Kwan BM, Ciccolo JT, Gurney B, Mermier CM, Bryan AD
Source: J Phys Act Health, 2013 Feb;10(2), p. 271-9.
EPub date: 2012 Feb 29.
A transdisciplinary approach to the selection of moderators of an exercise promotion intervention: baseline data and rationale for Colorado STRIDE.
Authors: Magnan RE, Nilsson R, Marcus BH, Ciccolo JT, Bryan AD
Source: J Behav Med, 2013 Feb;36(1), p. 20-33.
EPub date: 2011 Nov 16.
The Big Picture of Individual Differences in Physical Activity Behavior Change: A Transdisciplinary Approach.
Authors: Bryan AD, Nilsson R, Tompkins SA, Magnan RE, Marcus BH, Hutchison KE
Source: Psychol Sport Exerc, 2011 Jan;12(1), p. 20-26.
Menstrual cycle effects on perceived exertion and pain during exercise among sedentary women.
Authors: Hooper AE, Bryan AD, Eaton M
Source: J Womens Health (Larchmt), 2011 Mar;20(3), p. 439-46.
EPub date: 2011 Jan 10.