Effect of stage duration on physiological variables commonly used to determine maximum aerobic performance during cycle ergometry

Roffey, Darren M., Byrne, Nuala M. and Hills, Andrew P. (2007) Effect of stage duration on physiological variables commonly used to determine maximum aerobic performance during cycle ergometry. Journal of Sports Sciences, 25 12: 1325-1335. doi:10.1080/02640410601175428


Author Roffey, Darren M.
Byrne, Nuala M.
Hills, Andrew P.
Title Effect of stage duration on physiological variables commonly used to determine maximum aerobic performance during cycle ergometry
Journal name Journal of Sports Sciences   Check publisher's open access policy
ISSN 0264-0414
1466-447X
Publication date 2007-08-31
Sub-type Article (original research)
DOI 10.1080/02640410601175428
Open Access Status Not yet assessed
Volume 25
Issue 12
Start page 1325
End page 1335
Total pages 11
Place of publication Abingdon, Oxon, United Kingdom
Publisher Routledge
Language eng
Formatted abstract
In this study, we examined the effect of stage duration on physiological variables commonly used to determine maximum aerobic performance during cycle ergometry. Ten recreationally trained males (mean age 27.8 ± 7.1 years; BMI 24.3 ± 2.5 kg ± m-2; V̇O2max 52.5 ± 5.9 ml̇kg-1 ̇min-1) performed three different stage duration protocols on two separate occasions. Each short stage (SS; 1-min stages), long stage (LS; 3-min stages), and constant load + short stage (CL + SS; 4-min constant load followed by 1-min stages) protocol started at 50 W with increments of 30 W. The physiological variables measured included: time to maximum, maximum workload, maximum oxygen consumption (V̇O2max), maximum heart rate, maximum rating of perceived exertion, maximum blood lactate concentration, and maximum respiratory exchange ratio. The ventilatory threshold was calculated for every trial of the three protocols. There was no difference in V̇O2max, but maximum heart rate was higher in the LS protocol (P < 0.05). Maximum respiratory exchange ratio varied between the protocols (P < 0.05), while maximum workload differed between the SS and LS protocols, and the LS and CL + SS protocols (P < 0.0001). The physiological variables were comparable between trials for the SS and CL+SS protocols, but maximum workload and V̇O2max differed for the LS protocol (P < 0.05). Workload at the ventilatory threshold was lower for the LS protocol (P < 0.05). Heart rate at the ventilatory threshold was different between the LS and CL+SS protocols (P < 0.05). Performing a test involving 1- or 3-min stage durations on a single occasion was appropriate for the determination of V̇O2max and the ventilatory threshold. However, the disparity in heart rate and workload could result in differences in mechanical and physiological work being undertaken. Consistent use of a protocol may alleviate errors during exercise prescription.
Keyword Endurance
Oxygen uptake
Performance
Repeatability
Testing
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Mater Research Institute-UQ (MRI-UQ)
 
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