Race and sex differences in dropout from the STRRIDE trials.

Abstract

Purpose

To determine if race and sex differences exist in determinants and timing of dropout among individuals enrolled in an exercise and/or caloric restriction intervention.

Methods

A total of 947 adults with dyslipidemia (STRRIDE I, STRRIDE AT/RT) or prediabetes (STRRIDE-PD) were randomized to either inactive control or to 1 of 10 exercise interventions, ranging from doses of 8-23 kcal/kg/week, intensities of 50%-75% V˙O2 peak, and durations of 6-8 months. Two groups included resistance training, and one included a dietary intervention (7% weight loss goal). Dropout was defined as an individual withdrawn from the study, with the reasons for dropout aggregated into determinant categories. Timing of dropout was defined as the last session attended and aggregated into phases (i.e., "ramp" period to allow gradual adaptation to exercise prescription). Utilizing descriptive statistics, percentages were generated according to categories of determinants and timing of dropout to describe the proportion of individuals who fell within each category.

Results

Black men and women were more likely to be lost to follow-up (Black men: 31.3% and Black women: 19.6%), or dropout due to work responsibilities (15.6% and 12.5%), "change of mind" (12.5% and 8.9%), transportation issues (6.3% and 3.6%), or reported lack of motivation (6.3% and 3.6%). Women in general noted lack of time more often than men as a reason for dropout (White women: 22.4% and Black women: 22.1%). Regardless of race and sex, most participants dropped out during the ramp period of the exercise intervention; with Black women (50%) and White men (37.1%) having the highest dropout rate during this period.

Conclusion

These findings emphasize the importance of targeted retention strategies when aiming to address race and sex differences that exist in determinants and timing of dropout among individuals enrolled in an exercise and/or caloric restriction intervention.

Department

Description

Provenance

Citation

Published Version (Please cite this version)

10.3389/fspor.2023.1215704

Publication Info

Collins, Katherine A, Kim M Huffman, Ruth Q Wolever, Patrick J Smith, Ilene C Siegler, Leanna M Ross, John M Jakicic, Paul T Costa, et al. (2023). Race and sex differences in dropout from the STRRIDE trials. Frontiers in sports and active living, 5. p. 1215704. 10.3389/fspor.2023.1215704 Retrieved from https://hdl.handle.net/10161/29675.

This is constructed from limited available data and may be imprecise. To cite this article, please review & use the official citation provided by the journal.

Scholars@Duke

Collins

Katherine Collins

Medical Instructor in Population Health Sciences

Katherine A. Collins, PhD, NBC-HWC, is a Medical Instructor in the Department of Population Health Sciences and affiliated with the Duke Molecular Physiology Institute at Duke University School of Medicine, and is a board-certified health and wellness coach. She studies barriers and predictors of health-promoting behavior change. The ultimate goal of her translational research is to design trials to optimize health-promoting behaviors for those at risk for "relapse" or ceased behavioral modification, in order to improve long-term health and well-being.

Huffman

Kim Marie Huffman

Associate Professor of Medicine

Determining the role of physical activity in modulating health outcomes (cardiovascular disease risk) in persons with rheumatologic diseases (rheumatoid arthritis, gout, osteoarthritis)

Integrating clinical rheumatology, basic immunology, metabolism, and exercise science in order to reduce morbidity in individuals with arthritis

Evaluating relationships between circulating and intra-muscular metabolic intermediates and insulin resistance in sedentary as well as individuals engaging in regular exercise

Addressing the role of physical activity in modulating inflammation, metabolism, and functional health in aging populations

Siegler

Ilene C. Siegler

Professor in Psychiatry and Behavioral Sciences

My research efforts are in the area of developmental health psychology and organized around understanding the role of personality in health and disease in middle and later life.

My primary research activity is as Principal Investigator of the UNC Alumni Heart Study (UNCAHS) a prospective epidemiologic study of 5000 middle aged men and women and 1200 of their spouses that evaluates the role of personality on coronary heart disease and coronary heart disease risk, cancer, and normal aging.

As head of Cancer Prevention Research Unit , I study the role of psychological factors related to mammography behavior and estrogen replacement therapy is being studied in UNCAHS women.








REPRESENTATIVE PUBLICATIONS

Siegler, I.C., Zonderman, A.B., Barefoot, J.C., Williams, R.B., Jr., Costa, P.T., Jr., & McCrae, R. R. (1990). Predicting personality from college MMPI scores: Implications for follow-up studies in psychosomatic medicine. Psychosomatic Medicine, 52, 644-652.

Siegler, I.C., Peterson, B.L., Barefoot, J.C., & Williams, R.B. (1992). Hostility during late adolescence predicts coronary risk factors at midlife. American Journal of Epidemiology, 138(2), 146-154.

Siegler, I.C., Peterson, B.L., Barefoot, J.C., Harvin, S.H. Dahlstrom, W.G., Kaplan, B.H., Costa, P.T. Jr., & Williams, R.B. (1992). Using college alumni populations in epidemiologic research: The UNC Alumni Heart Study. Journal of Clinical Epidemiology, 45(11), 1243-1250.

Siegler, I.C., Dawson, D.V., & Welsh, K.A. (1994). Caregiver ratings of personality change in Alzheimer's disease patients: A replication. Psychology and Aging, 9, 464-466.

Siegler, I.C., Feaganes, J.R., & Rimer, B.K. (1995). Predictors of adoption of mammography in women under age 50. Health Psychology, 14, 274-278.



1/13/99


Unless otherwise indicated, scholarly articles published by Duke faculty members are made available here with a CC-BY-NC (Creative Commons Attribution Non-Commercial) license, as enabled by the Duke Open Access Policy. If you wish to use the materials in ways not already permitted under CC-BY-NC, please consult the copyright owner. Other materials are made available here through the author’s grant of a non-exclusive license to make their work openly accessible.