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Titolo:
Expiratory time determined by individual anxiety levels in humans
Autore:
Masaoka, Y; Homma, I;
Indirizzi:
Showa Univ, Sch Med, Dept Physiol 2, Shinagawa Ku, Tokyo 142, Japan Showa Univ Tokyo Japan 142 ept Physiol 2, Shinagawa Ku, Tokyo 142, Japan
Titolo Testata:
JOURNAL OF APPLIED PHYSIOLOGY
fascicolo: 4, volume: 86, anno: 1999,
pagine: 1329 - 1336
SICI:
8750-7587(199904)86:4<1329:ETDBIA>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
BREATHING PATTERN; RESPIRATORY PATTERNS; EXERCISE;
Keywords:
physical load; mental stress; respiratory rate; expiratory time; anxiety;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
30
Recensione:
Indirizzi per estratti:
Indirizzo: Homma, I Showa42,iv, Sch Med, Dept Physiol 2, Shinagawa Ku, Hatanodai 1-5-8, Tokyo 1 Showa Univ Hatanodai 1-5-8 Tokyo Japan 142 anodai 1-5-8, Tokyo 1
Citazione:
Y. Masaoka e I. Homma, "Expiratory time determined by individual anxiety levels in humans", J APP PHYSL, 86(4), 1999, pp. 1329-1336

Abstract

We have previously found that individual anxiety levels influence respiratory rates in physical load and mental stress (Y. Masaoka and I. Homma. Int. J. Psychophysiol. 27: 153-159, 1997). On the basis of that study, in the present study we investigated the metabolic outputs during tests and analyzed the respiratory timing relationship between inspiration and expiration, taking into account individual anxiety levels. Disregarding anxiety levels, there were correlations between O-2 consumption ((V) over dot O-2) and minute ventilation ((V) over dot E) and between (V) over dot O-2 and tidal volume in the physical load test, but no correlations were observed in the noxious audio stimulation test. There was a volume-based increase in respiratory patterns in physical load; however, (V) over dot E increased not only forthe adjustment of metabolic needs but also for individual mental factors; anxiety participated in this increase. In the high-anxiety group, the (V) over dot E-to-(V) over dot O-2 ratio, indicating ventilatory efficiency, increased in both tests. In the high-anxiety group, increases in respiratory rate contributed to a (V) over dot E increase, and there were negative correlations between expiratory time and anxiety scores in both tests. In an awake state, the higher neural structure may dominantly affect the mechanism of respiratory rhythm generation. We focus on the relationship between expiratory time and anxiety and show diagrams of respiratory output, allowing for individual personality.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/12/20 alle ore 11:45:52