http://www.cnr.it/ontology/cnr/individuo/prodotto/ID197013

Ventilation and entrainment of breathing during cycling and running in triathletes (Articolo in rivista)

Type

Prodotto della ricerca (Classe)
Articolo in rivista (Classe)

Label

Ventilation and entrainment of breathing during cycling and running in triathletes (Articolo in rivista) (literal)

Anno

1998-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1097/00005768-199802000-00011 (literal)

Alternative label

Bonsignore, MR ; Morici, G; Abate, P ; Romano, S ; Bonsignore, G (1998)
Ventilation and entrainment of breathing during cycling and running in triathletes
in Medicine and science in sports and exercise; Lippincott Williams &Wilkins, Hagerstown (Stati Uniti d'America)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Bonsignore, MR ; Morici, G; Abate, P ; Romano, S ; Bonsignore, G (literal)

Pagina inizio

239 (literal)

Pagina fine

245 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

30 (literal)

Rivista

Medicine and science in sports and exercise (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

7 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

2 (literal)

Note

ISI Web of Science (WOS) (literal)
PubMe (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

CNR, Ist Sci & Tecnol Sport & Attivita Fis, I-90146 Palermo, Italy CNR, Ist Fisiopatol Resp, I-90146 Palermo, Italy (literal)

Titolo

Ventilation and entrainment of breathing during cycling and running in triathletes (literal)

Abstract

Purpose: to assess whether entrainment of breathing (E) during exercise: 1) differed according to the test protocol in well-trained triathletes, and 2) improved ventilatory efficiency during exercise. Methods: Eight triathletes performed three incremental tests until exhaustion: while cycling (CE), while running at increasing grade and constant speed (up arrow GRADE) and while running at increasing speed and constant grade (up arrow SPEED), respectively. E was evaluated as the percentage of breaths occurring at respiratory rates (F) corresponding to integer ratios of the exercise cycle rate. To assess whether E improved ventilatory efficiency, Delta(V) over dot(E)/(V) over dotO(2) between nonentrained and entrained breaths was measured at each load. Results: Mean E was higher in CE (57.2 +/- 21.9%) than in up arrow GRADE (46.9 +/- 18.7%) and up arrow SPEED (41.4 +/- 17.2%). E decreased at high loads in CE and up arrow SPEED but not in up arrow GRADE. In the group of subjects, E correlated with the degree of fitness (evaluated as (V) over dot(2Tvent)/(V) over dotO(2peak%)) only during up arrow GRADE. By multiple analysis on all data, minute ventilation correlated with CO2 production but not with the exercise cycle rate; however, either F or tidal volume correlated significantly with both these variables. (V) over dot(E)/(V) over dotO(2) was lower in entrained than nonentrained breaths at each load in CE and up arrow GRADE experiments, but the difference was small. Conclusions: In spite of some differences among protocols, triathletes showed significant E during incremental exercise tests. Spontaneous E appeared to slightly improve ventilatory efficiency during CE and up arrow GRADE protocols. (literal)

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