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Titolo:
Association between muscle fiber composition and blood pressure levels during exercise in men
Autore:
Houmard, JA; Weidner, ML; Koves, TR; Hickner, RC; Cortright, RL;
Indirizzi:
E Carolina Univ, Dept Exercise & Sport Sci, Human Performance Lab, Greenville, NC 27858 USA E Carolina Univ Greenville NC USA 27858 nce Lab, Greenville, NC 27858 USA E Carolina Univ, Dept Physiol, Greenville, NC USA E Carolina Univ Greenville NC USA Univ, Dept Physiol, Greenville, NC USA
Titolo Testata:
AMERICAN JOURNAL OF HYPERTENSION
fascicolo: 6, volume: 13, anno: 2000,
parte:, 1
pagine: 586 - 592
SICI:
0895-7061(200006)13:6<586:ABMFCA>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
SKELETAL-MUSCLE; ISOMETRIC-EXERCISE; INSULIN RESISTANCE; CAPILLARY DENSITY; RISK-FACTORS; HYPERTENSION; MORPHOLOGY; DISEASE; WOMEN; FLOW;
Keywords:
hypertension; metabolic syndrome; obesity; skeletal muscle;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Houmard, JA E Carolina Univ, Dept Exercise & Sport Sci, Human Performance Lab, Ward Sports Med Bldg, Greenville, NC 27858 USA E Carolina Univ Ward Sports Med Bldg Greenville NC USA 27858 A
Citazione:
J.A. Houmard et al., "Association between muscle fiber composition and blood pressure levels during exercise in men", AM J HYPERT, 13(6), 2000, pp. 586-592

Abstract

Normotensive individuals with a magnified blood pressure (BP) level duringexercise have an increased risk for developing hypertension. The purpose of this study was to determine if skeletal muscle fiber type is related to the BP level during exercise. Peak BP was determined in 35 normotensive, middle-aged (mean +/- SE, 46.0 +/- 1.8 years) men during maximal treadmill exercise. Fiber distribution (I, IIa, IIb) was measured in muscle samples (percutaneous needle biopsy) from the vastus lateralis and lateral gastrocnemius. The systolic BP during exercise was significantly (P < .05) related to the percentage of type IIb fibers in both the vastus lateralis (r = 0.37) and gastrocnemius (r = 0.38). Mean arterial pressure BP was also related to the percentage of type IIb fibers in the gastrocnemius (r = 0.39, P < .05), with a similar trend evident in the vastus lateralis (r 0.31, P = 0.08). The percentage of type IIb muscle fibers in both muscle groups was associatedwith (P < .05) body fat (vastus lateralis, r = 0.44; gastrocnemius, r = 0.43). There were no relationships between the relative percentage of type I or IIa fibers with any BP parameters. Maximal oxygen consumption was negatively related to BP, but only when expressed relative to body weight (mL . kg(-1) . min(-1)). These data suggest that muscle morphology is related to the blood pressure level during exercise and provides insight into factors that may predispose individuals toward the development of hypertension and cardiovascular disease. Am J Hypertens 2000;13:586-592 (C) 2000 American Journal of Hypertension, Ltd.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/12/20 alle ore 11:55:06