Contribution of selected physiological variables on sprint triathlon performance

Postgraduate Thesis uoadl:2887782 228 Read counter

Unit:
Κατεύθυνση Κοινωνικές και Ανθρωπιστικές Σπουδές
Library of the School of Physical Education and Sport Science
Deposit date:
2019-12-17
Year:
2019
Author:
Papavassiliou Thomas
Supervisors info:
Ζαχαρόγιαννης Ηλίας, Αναπληρωτής Καθηγητής, ΣΕΦΑΑ, ΕΚΠΑ
Σουλτανάκη Ελένη, Αναπληρώτρια Καθηγήτρια, ΣΕΦΑΑ, ΕΚΠΑ
Παραδείσης Γεώργιος, Αναπληρωτής Καθηγητής, ΣΕΦΑΑ, ΕΚΠΑ
Original Title:
Συνεισφορά επιλεγμένων φυσιολογικών παραμέτρων στην επίδοση τριάθλου μικρής διάρκειας
Languages:
Greek
Translated title:
Contribution of selected physiological variables on sprint triathlon performance
Summary:
Triathlon is an endurance contest that requires continuous and sequential completion of swimming, cycling and running, usually in the above order. A successful triathlete will be capable of executing the above three disciplines, including the two transitions, in the least amount of time while expending large amounts of energy for prolonged periods of time in the most economical way.
Many studies have examined the contribution of selected physiological variables such as VO2max, economy of movement, fractional utilization of VO2max and anaerobic threshold on the performance of individual sports. In triathlon most previous research efforts have mainly examined Olympic distance, Half Ironman or Ironman, while there is a pausity of results in the sprint distance despite the fact that sprint is the most popular triathlon distance.
Accordingly, the aim of this study was to assess whether significant correlations exist between a number of selected physiological variables measured during conventional laboratory testing on a cycle ergometer and a treadmill and sprint triathlon performance. A second purpose of this study was to determine whether selected physiological variables could accurately predict race time in sprint triathlon competition.
15 moderately trained male triathletes participated in this study. All triathletes performed in random order 1) two graded maximal exercise tests, on a cycle ergometer and a treadmill to determine their maximal oxygen uptake, 2) two anaerobic capacity tests, on a cycle ergometer and a treadmill. Within two weeks before or two weeks after the testing, all triathletes participated in a sprint triathlon race, at sea level on a flat course that consisted of a 750 m sea swim, a 20 km cycle, and 5 km run.
The results showed that significant correlations exist between VO2max during cycling (r = -0,811, p<0,05) or running (r = -0,757, p<0,05) and overall triathlon performance. Stepwise multiple linear regression analysis with triathlon performance as the dependent variable and the physiological measures during running as the independent variables showed that VO2max (ml.min-1.kg-1), Time_CF, CHOrate @ VT και % body fat yielded the best prediction of performance (R2 = 0,912). When only the physiological variables from cycling were included into the model, the results showed that VO2max (ml.min-1), VO2max (ml.min-1.kg-1) and PFmax (rpm) explained 88% of the sprint triathlon performance variation. Thus our data indicate that overall race time for moderately trained triathletes, competing over the sprint distance can be accurately predicted from maximal and submaximal laboratory measures.
Main subject category:
Education - Sport science
Keywords:
triathlon, performance, physiological variables, sprint distance
Index:
No
Number of index pages:
0
Contains images:
No
Number of references:
136
Number of pages:
119
THOMAS ΔΙΑΤΡΙΒΗ me ENTYPO EGKRISIS- as 7-6-19.pdf (3 MB) Open in new window