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Titolo:
CIGARETTE-SMOKING AND SUBMAXIMAL EXERCISE TEST DURATION IN A BIRACIALPOPULATION OF YOUNG-ADULTS - THE CARDIA STUDY
Autore:
SIDNEY S; STERNFELD B; GIDDING SS; JACOBS DR; BILD DE; OBERMAN A; HASKELL WL; CROW RS; GARDIN JM;
Indirizzi:
KAISER PERMANENTE MED CARE PROGRAM,DIV RES,3451 PIEDMONT AVE OAKLAND CA 94611
Titolo Testata:
Medicine and science in sports and exercise
fascicolo: 8, volume: 25, anno: 1993,
pagine: 911 - 916
SICI:
0195-9131(1993)25:8<911:CASETD>2.0.ZU;2-1
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHYSICAL-ACTIVITY; RISK-FACTORS; ENDURANCE; DENSITY; TRIAL; MEN;
Keywords:
BETA-BLOCKERS; PHYSICAL ACTIVITY; FITNESS; PHYSICAL EXERCISE; CARDIOVASCULAR SYSTEM;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
20
Recensione:
Indirizzi per estratti:
Citazione:
S. Sidney et al., "CIGARETTE-SMOKING AND SUBMAXIMAL EXERCISE TEST DURATION IN A BIRACIALPOPULATION OF YOUNG-ADULTS - THE CARDIA STUDY", Medicine and science in sports and exercise, 25(8), 1993, pp. 911-916

Abstract

Symptom-limited, graded exercise treadmill testing was performed by 4,968 white and black adults, ages 18-30 yr, during the baseline examination for the Coronary Artery Risk Development in Young Adults (CARDIA) study. Compared with nonsmokers, the mean exercise test duration of smokers was 29-64 s shorter depending on race/gender group (all P < 0.001), but mean duration to heart rate 130 (beats.min-1) ranged from 20-50 s longer (P < 0.05). In each race/gender group, test duration to heart rates up to 150 was 15-35 s longer (P < 0.05) in smokers than in nonsmokers after adjustment for age, sum of skinfolds, hemoglobin, andphysical activity score. The mean maximum heart rate was lower in smokers than in nonsmokers (difference ranging from 6.7 beats.min-1 in white men to 11.2 beats.min-1 lower in black women, P < 0.001), althoughmaximum rating of perceived exertion was nearly identical in smokers and nonsmokers. Chronic smoking appears to blunt the heart rate response to exercise, so that exercise duration to submaximal heart rates isincreased even though maximal performance is impaired. This may result from downloading of beta-receptors caused by smoking. Smoking statusshould be considered in the evaluation of physical fitness data utilizing submaximal test protocols, or else the fitness of smokers relative to nonsmokers is likely to be overestimated.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/11/20 alle ore 08:32:56