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Titolo:
INCREASED FINGER ARTERIAL BLOOD-PRESSURE AFTER EXERCISE DETRAINING INWOMEN WITH PARENTAL HYPERTENSION - AUTONOMIC TASKS
Autore:
BUCKWORTH J; CONVERTINO VA; CURETON KJ; DISHMAN RK;
Indirizzi:
OHIO STATE UNIV,DEPT EXERCISE SCI COLUMBUS OH 43210 UNIV GEORGIA,DEPT EXERCISE SCI ATHENS GA 30602 DIV CLIN SCI,PHYSIOL RES BRANCH BROOKS AFB TX 00000
Titolo Testata:
Acta Physiologica Scandinavica
fascicolo: 1, volume: 160, anno: 1997,
pagine: 29 - 41
SICI:
0001-6772(1997)160:1<29:IFABAE>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
PSYCHOLOGICAL STRESS; AEROBIC FITNESS; CARDIOVASCULAR REACTIVITY; PHYSICAL-ACTIVITY; TRAINING-PROGRAM; RESPONSES; PATTERNS; HEART; ASSOCIATION; HEALTH;
Keywords:
CARDIOVASCULAR REACTIVITY; CAROTID-CARDIAC VAGAL BAROREFLEX; COLD PRESSOR; MENTAL ARITHMETIC;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
58
Recensione:
Indirizzi per estratti:
Citazione:
J. Buckworth et al., "INCREASED FINGER ARTERIAL BLOOD-PRESSURE AFTER EXERCISE DETRAINING INWOMEN WITH PARENTAL HYPERTENSION - AUTONOMIC TASKS", Acta Physiologica Scandinavica, 160(1), 1997, pp. 29-41

Abstract

The effects of exercise detraining on resting finger arterial blood pressure (BP), the carotid-cardiac vagal baroreflex, and BP and heart rate (HR) responses to mental arithmetic and forehead cold exposure were studied in young (19+/-1.1 years) normotensive women with parental history of hypertension. Following 8 weeks of aerobic exercise for 25 min, 3 days week(-1) at an intensity of 60% (V) over dot(O2peak), subjects ceased training for 6-8 weeks. After detraining, (V) over dot(O2peak) (mL kg(-1) min(-1)) was reduced by 11.5% (41.1 +/- 6.9 to 36.4 +/-4.8) coincident with an approximate to 10% increase in submaximal exercise heart rate. Responses to the laboratory tasks were then compared. Detraining was accompanied by increases (P < 0.05) in resting systolic (SEP) (113.6 +/- 8.9 to 121.2 +/- 9.0), diastolic (DBP) (63.0 +/- 8.4 to 68.3 +/- 6.8), and mean arterial (MAP) (78.7 +/- 8.4 to 84.2 +/-7.3) BP (mmHg). None of the above changes occurred in sedentary matched-control subjects. Systolic blood pressure was elevated during forehead cold exposure and MAP was elevated during mental arithmetic after detraining, but the rates of response and recovery for SEP, DBP and MAP were not altered by detraining. Despite higher submaximal exercise HR after detraining, HR responses to autonomic challenges, including the carotid-cardiac vagal baroreflex, were unchanged between training and detraining. Our results indicate that exercise detraining increases resting finger arterial BP in young normotensive women at risk for hypertension with no effects on the rate of response or recovery of heartrate and BP during autonomic tasks known to elicit sympathetic and carotid-cardiac vagal activities in this population. The use of auscultatory brachial artery pressures in a similar study of women diagnosed with hypertension will clarify the clinical meaning of our findings.

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Documento generato il 03/12/20 alle ore 12:52:26