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Exercise Training in "At-Risk" Black and White Women: A Comparative Cohort Analyses.

Abstract：

PURPOSE:Few data on the effect of exercise interventions in black women at risk for cardiovascular disease are available. METHODS:Women ≥18 yr of age without known cardiovascular disease with ≥1 coronary risk factor were enrolled in a community-based exercise program ≥3 d·wk for ≥30 min per session for 6 months. Exercise training intensity ~50% to 80% of functional capacity, using heart rate (HR) and/or rating of perceived exertion (RPE) as the primary intensity modulators. Preconditioning versus postconditioning quality of life assessments (depression and level of daytime sleepiness), dietary fat intake, Duke Activity Status Index score, changes in cardiovascular efficiency (systolic/diastolic blood pressure (SBP/DBP), HR, RPE during a standardized submaximal workload), and anthropometric measures, including body weight, body mass index, and waist circumference, were evaluated. RESULTS:Of 556 volunteers, 143 were excluded, leaving 413 women (222 white, 191 black; mean ± SD age, 61 ± 9 yr) who met compliance criteria. Both groups demonstrated significant (P < 0.05) postconditioning decreases in body mass index, waist circumference, resting SBP/DBP, and total and LDL cholesterol, and reductions in HR, SBP/DBP, and RPE at a fixed submaximal workload, and in fat screener, depression, and sleep scores. Duke Activity Status Index scores increased significantly (P < 0.0001) for both groups, signifying increases in self-reported functional capacity. Although 87 women (21%) experienced a musculoskeletal injury/discomfort during the program, there were no exercise-related cardiovascular events. CONCLUSIONS:A progressive moderate-to-vigorous exercise intervention without preliminary exercise testing elicited comparable improvements in coronary risk factors, anthropometric and quality of life measures, and cardiovascular efficiency in "at-risk" black and white women. These adaptations were achieved at exercise levels below those recommended in contemporary physical activity guidelines.

journal_name

Med Sci Sports Exerc

journal_title

Medicine and science in sports and exercise

authors

Bowdon M,Marcovitz P,Jain SK,Boura J,Liroff KG,Franklin BA

doi

10.1249/MSS.0000000000001580

subject

Has Abstract

pub_date

2018-07-01 00:00:00

pages

1350-1356

issue

eissn

0195-9131

issn

1530-0315

journal_volume

pub_type

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Exercise Training in "At-Risk" Black and White Women: A Comparative Cohort Analyses.