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Titolo:
BRADYCARDIA DURING BAROREFLEX STIMULATION AND ACTIVE OR PASSIVE STRESSOR TASKS - CARDIORESPIRATORY FITNESS AND HOSTILITY
Autore:
GRAHAM RE; ZEICHNER A; PEACOCK LJ; DISHMAN RK;
Indirizzi:
UNIV GEORGIA,RAMSEY STUDENT CTR,DEPT EXERCISE SCI,300 RIVER RD ATHENSGA 30602 UNIV GEORGIA,RAMSEY STUDENT CTR,DEPT EXERCISE SCI ATHENS GA 30602 UNIV GEORGIA,DEPT PSYCHOL ATHENS GA 30602
Titolo Testata:
Psychophysiology
fascicolo: 5, volume: 33, anno: 1996,
pagine: 566 - 575
SICI:
0048-5772(1996)33:5<566:BDBSAA>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
HEART-RATE-VARIABILITY; RESPIRATORY SINUS ARRHYTHMIA; PARASYMPATHETIC CARDIAC CONTROL; ACUTE MYOCARDIAL-INFARCTION; SYMPATHETIC-NERVE ACTIVITY; A BEHAVIOR PATTERN; COLD PRESSOR TEST; AEROBIC FITNESS; CARDIOVASCULAR REACTIVITY; PHYSICAL-ACTIVITY;
Keywords:
CAROTID-CARDIAC VAGAL BAROREFLEX; MENTAL STRESS; COLD PRESSER; TYPE A BEHAVIOR PATTERN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Physical, Chemical & Earth Sciences
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
100
Recensione:
Indirizzi per estratti:
Citazione:
R.E. Graham et al., "BRADYCARDIA DURING BAROREFLEX STIMULATION AND ACTIVE OR PASSIVE STRESSOR TASKS - CARDIORESPIRATORY FITNESS AND HOSTILITY", Psychophysiology, 33(5), 1996, pp. 566-575

Abstract

We examined whether the resting bradycardia associated with cardiorespiratory fitness extends to lowered heart rate (HR) and mean arterial pressure during novel passive or active laboratory stressors and to a longer heart period during stimulation of the carotid-cardiac vagal baroreflex, independently of the Type A behavior pattern (TABP) and hostility. Forty-four normotensive Caucasian men (18-35 years of age) completed the Structured Interview for TABP, the Cook-Medley Hostility Scale, and a peak oxygen uptake (Vo(2peak)) test. Vo(2peak) was inverselyrelated to HR prior to, during, and after each stressor and was positively related to heart period during baroreflex testing. Hostility wasinversely related to heart period during baroreflex testing. TABP hadno effects. Our findings indicate that cardiorespiratory fitness and low hostility are independently associated with a bradycardia during stimulation of the carotid-cardiac baroreflex, consistent with a possible enhancement of cardiac vagal tone.

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Documento generato il 03/12/20 alle ore 05:52:31