Muscular strength and incident hypertension in normotensive and prehypertensive men.

Abstract:

UNLABELLED:The protective effects of cardiorespiratory fitness (CRF) on hypertension (HTN) are well known; however, the association between muscular strength and incidence of HTN has yet to be examined. PURPOSE:This study evaluated the strength-HTN association with and without accounting for CRF. METHODS:Participants were 4147 men (age = 20-82 yr) in the Aerobics Center Longitudinal Study for whom an age-specific composite muscular strength score was computed from measures of a one-repetition maximal leg and a one-repetition maximal bench press. CRF was quantified by maximal treadmill exercise test time in minutes. Cox proportional hazards regression analysis was used to estimate hazard ratios (HR) and 95% confidence intervals of incident HTN events according to exposure categories. RESULTS:During a mean follow-up of 19 yr, there were 503 incident HTN cases. Multivariable-adjusted (excluding CRF) HR of HTN in normotensive men comparing middle- and high-strength thirds to the lowest third were not significant at 1.17 and 0.84, respectively. Multivariable-adjusted (excluding CRF) HR of HTN in baseline prehypertensive men comparing middle- and high-strength thirds to the lowest third were significant at 0.73 and 0.72 (P = 0.01 each), respectively. The association between muscular strength and incidence of HTN in baseline prehypertensive men was no longer significant after control for CRF (P = 0.26). CONCLUSIONS:The study indicated that middle and high levels of muscular strength were associated with a reduced risk of HTN in prehypertensive men only. However, this relationship was no longer significant after controlling for CRF.

journal_name

Med Sci Sports Exerc

authors

Maslow AL,Sui X,Colabianchi N,Hussey J,Blair SN

doi

10.1249/MSS.0b013e3181b2f0a4

subject

Has Abstract

pub_date

2010-02-01 00:00:00

pages

288-95

issue

2

eissn

0195-9131

issn

1530-0315

journal_volume

42

pub_type

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