Impact of moderate overweight and body composition on postexercise hemodynamic responses in healthy men

Abstract

Postexercise hypotension (PEH) is a well-established phenomenon that may contribute to the antihypertensive mechanisms of exercise. The purpose of this study was to examine the impact of moderate overweight on postexercise hemodynamic responses in a group of healthy nonobese men (n ¼ 16, aged 20.471.8 years) with apparently normal cardiovascular function at rest. Forearm blood flow, using strain gauge plethysmography, blood pressure, using a Finapres device, and cardiac output (CO), using impedance cardiography, were measured on a control day and on a separate day following a bout of moderate intensity exercise (20 min at 75% heart rate reserve). Linear regression analysis, adjusted for exercise intensity, revealed that body mass index (BMI) was associated with specific postexercise hemodynamic responses. Higher BMI was associated with greater reductions in CO and stroke volume, but lower reductions in total peripheral resistance. These findings suggest body composition impacts on mechanisms of PEH and should therefore be considered as an important confounding variable in future studies.

The training and detraining effect of high-intensity interval training on post-exercise hypotension in young overweight/obese women

“…Despite the known health benefits of exercise (Morrow et al 2004), it remains a challenge for most people to engage in regular physical activity. Among other cardiovascular risk factors, obesity is an independent risk factor for the development of hypertension (Hamer and Boutcher 2006;Kopelman 2000). Evidence shows that the arterial pressure response to exercise is aggravated in obese compared with lean adults (Dipla et al 2012).…”

Influence of population and exercise protocol characteristics on hemodynamic determinants of post-aerobic exercise hypotension

“…Some of them attribute PAEH to reduced cardiac output (CO) (6,9,12,15,19,21-24,30-34), while others report a peripheral vascular resistance (PVR) reduction (4,7,16-18,20-23,25-29,33-53). This controversy suggests that some other factors could influence these determinants.…”

Hipotensão pós-exercício: possível relação com fatores étnicos e genéticos

“…Therefore, environmental factors, and even ageing alone 36 (not discussed in this review), affect the functioning of the arterial wall, vascular resistance and, consequently, BP control 5,10 . Such characteristics may affect the magnitude and duration of essential hypertension and favor the appearance of systemic hypertension.…”

“…According to Agarwalet al 9 , genetic mutations, among other physiological and behavioral factors, may affect the capacity to maintain adequate BP and, consequently, favor hypertension and even interfere with PEH. Additionally, the association between the current worldwide epidemics of hypertension and modern lifestyles seems clear, particularly because of high salt intakes and sedentary habits, among other behaviors (also called environmental factors), as well as due to the interaction between these variables and ancestral susceptibility 5,7,10 , represented by ethnicity and genetics. These factors have become the object of recurrent studies in the last decades, particularly because such susceptibility may affect BP-related phenotypes.…”