Huang, Z and Park, C and Chaturvedi, N and Howe, LD and Sharman, JE and Hughes, AD and Schultz, MG, Cardiorespiratory fitness, fatness, and the acute blood pressure response to exercise in adolescence, Scandinavian Journal of Medicine and Science in Sports Article online ahead of print. ISSN 0905-7188 (2021) [Refereed Article]
Objective: Exaggerated exercise blood pressure (BP) is associated with cardiovascular risk factors in adolescence. Cardiorespiratory fitness and adiposity (fatness) are independent contributors to cardiovascular risk, but their interrelated associations with exercise BP are unknown. This study aimed to determine the relationships between fitness, fatness, and the acute BP response to exercise in a large birth cohort of adolescents.
Methods: 2292 adolescents from the Avon Longitudinal Study of Parents and Children (aged 17.8 ± 0.4 years, 38.5% male) completed a sub-maximal exercise step test that allowed fitness (VO2 max) to be determined from workload and heart rate using a validated equation. Exercise BP was measured immediately on test cessation and fatness calculated as the ratio of total fat mass to total body mass measured by DXA.
Results: Post-exercise systolic BP decreased stepwise with tertile of fitness (146 (18); 142 (17); 141 (16) mmHg) but increased with tertile of fatness (138 (15); 142 (16); 149 (18) mmHg). In separate models, fitness and fatness were associated with post-exercise systolic BP adjusted for sex, age, height, smoking, and socioeconomic status (standardized β: −1.80, 95%CI: −2.64, −0.95 mmHg/SD and 4.31, 95%CI: 3.49, 5.13 mmHg/SD). However, when fitness and fatness were included in the same model, only fatness remained associated with exercise BP (4.65, 95%CI: 3.69, 5.61 mmHg/SD).
Conclusion: Both fitness and fatness are associated with the acute BP response to exercise in adolescence. The fitness-exercise BP association was not independent of fatness, implying the cardiovascular protective effects of cardiorespiratory fitness may only be realized with more favorable body composition.
|Item Type:||Refereed Article|
|Keywords:||exercise, blood pressure, hypertension, public health|
|Research Division:||Health Sciences|
|Research Group:||Sports science and exercise|
|Research Field:||Exercise physiology|
|Objective Group:||Clinical health|
|Objective Field:||Prevention of human diseases and conditions|
|UTAS Author:||Huang, Z (Ms Huang Zhengzheng)|
|UTAS Author:||Sharman, JE (Professor James Sharman)|
|UTAS Author:||Schultz, MG (Dr Martin Schultz)|
|Deposited By:||Menzies Institute for Medical Research|
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