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2015 | 16 | 1 | 36-41
Tytuł artykułu

Effect of Cadence on Respiratory Response During Unloaded Cycling in Healthy Individuals

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Purpose. The aim of the study was to establish the respiratory response to unloaded cycling at different cadences. Methods. Eleven healthy participants performed a maximal graded exercise test on a cycle ergometer to assess aerobic fitness (maximal oxygen consumption: 46.27 ± 5.41 ml · min-1 · kg-1) and eight 10-min unloaded pedaling (0 W) bouts at a constant cadence (from 40 to 110 rpm). Respiratory data were measured continuously during each effort and then averaged over 30 s. Blood samples were collected before and 2 min after each effort to monitor changes in acid-base balance. Results. The efforts were performed at an intensity of 16.5-37.5% VO2peak. Respiratory response was not differentiated in cadences of 40, 50, 60 rpm. From 70 rpm, an increase in cadence was significantly associated with increased minute ventilation (F = 168.11, p < 0.000) and oxygen consumption (F = 214.86 p < 0.000) and, from 80 rpm, respiratory frequency (F = 16.06, p < 0.001) and tidal volume (F = 54.67, p < 0.000). No significant changes in acid-base balance were observed as a result of difference cadences. Conclusions. Unloaded cycling at a cadence of 70 rpm or above has a significant effect on respiratory function and may be associated with the involvement of large muscle ergoreceptors (mechanoreceptors) stimulated by the frequency of muscle contractions.
Słowa kluczowe
Wydawca
Czasopismo
Rocznik
Tom
16
Numer
1
Strony
36-41
Opis fizyczny
Daty
wydano
2015-03-01
otrzymano
2014-11-04
zaakceptowano
2015-01-13
online
2015-05-23
Twórcy
  • University School of Physical Education, Wrocław, Poland , jasagn@hotmail.com
  • Katedra Fizjologii i Biochemii Akademia Wychowania Fizycznego al. I.J. Paderewskiego 35 51-612 Wrocław, Poland
  • University School of Physical Education, Wrocław, Poland
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_1515_humo-2015-0025
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