Int J Sports Med 2020; 41(08): 539-544
DOI: 10.1055/a-1103-2001
Training & Testing

Physiological Correlates to In-race Paratriathlon Cycling Performance

Ben Thomas Stephenson
1  Peter Harrison Centre for Disability Sport, School of Sport Exercise and Health Sciences, Loughborough University, Loughborough, UK
2  English Institute of Sport, Performance Centre, Loughborough University, Loughborough, UK
,
Alex Shill
1  Peter Harrison Centre for Disability Sport, School of Sport Exercise and Health Sciences, Loughborough University, Loughborough, UK
2  English Institute of Sport, Performance Centre, Loughborough University, Loughborough, UK
,
John Lenton
1  Peter Harrison Centre for Disability Sport, School of Sport Exercise and Health Sciences, Loughborough University, Loughborough, UK
3  British Cycling, National Cycling Centre, Manchester, UK
,
Victoria Goosey-Tolfrey
1  Peter Harrison Centre for Disability Sport, School of Sport Exercise and Health Sciences, Loughborough University, Loughborough, UK
› Author Affiliations
Funding: This project was partly funded by the British Triathlon Federation. No companies or manufacturers will benefit from the results of the present study.

Abstract

The purpose was to determine the physiological correlates to cycling performance within a competitive paratriathlon. Five wheelchair user and ten ambulant paratriathletes undertook laboratory-based testing to determine their: peak rate of oxygen uptake; blood lactate- and ventilatory-derived physiological thresholds; and, their maximal aerobic power. These variables were subsequently expressed in absolute (l∙min −1 or W), relative (ml∙kg−1∙min −1 or W∙kg −1) and scaled relative (or ml∙kg − 0.82 ∙min −1, ml∙kg − 0.32 ∙min −1 or W∙kg −0.32) terms. All athletes undertook a paratriathlon race with 20 km cycle. Pearson’s correlation test and linear regression analyses were produced between laboratory-derived variables and cycle performance to generate correlation coefficients (r), standard error of estimates and 95% confidence intervals. For wheelchair users, performance was most strongly correlated to relative aerobic lactate threshold (W∙kg −1) (r=−0.99; confidence intervals: −0.99 to −0.99; standard error of estimate=22 s). For ambulant paratriathletes, the greatest correlation was with maximal aerobic power (W∙kg −0.32) (r=−0.91; −0.99 to −0.69; standard error of estimate=88 s). Race-category-specificity exits regarding physiological correlates to cycling performance in a paratriathlon race with further differences between optimal scaling factors between paratriathletes. This suggests aerobic lactate threshold and maximal aerobic power are the pertinent variables to infer cycling performance for wheelchair users and ambulant paratriathletes, respectively.



Publication History

Received: 00 00 2020

Accepted: 12 January 2020

Publication Date:
14 April 2020 (online)

© Georg Thieme Verlag KG
Stuttgart · New York