Physiological Profile of an Uphill Time Trial in Elite Cyclists.
In: International Journal of Sports Physiology & Performance, Jg. 13 (2018-03-01), Heft 3, S. 268-273
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Zugriff:
Context: While a number of studies have researched road-cycling performance, few have attempted to investigate the physiological response in field conditions. Purpose: To describe the physiological and performance profile of an uphill time trial (TT) frequently used in cycling competitions. Methods: Fourteen elite road cyclists (mean ± SD age 25 ± 6 y, height 174 ± 4.2 cm, body mass 64.4 ± 6.1 kg, fat mass 7.48% ± 2.82%) performed a graded exercise test to exhaustion to determine maximal parameters. They then completed a field-based uphill TT in a 9.2-km first-category mountain pass with a 7.1% slope. Oxygen uptake (VO 2 ), power output, heart rate (HR), lactate concentration, and perceived-exertion variables were measured throughout the field-based test. Results: During the uphill TT, mean power output and velocity were 302 ± 7W (4.2 ± 0.1 W/kg) and 18.7 ± 1.6 km/h, respectively. Mean VO 2 and HR were 61.6 ± 2.0 mL ⋅ kg -1 ⋅ min -1 and 178 ± 2 beats/min, respectively. Values were significantly affected by the 1st, 2nd, 6th, and final kilometers (P < .05). Lactate concentration and perceived exertion were 10.87 ± 1.12 mmol/L and 19.1 ± 0.1, respectively, at the end of the test, being significantly different from baseline measures. Conclusion: The studied uphill TT is performed at 90% of maximum HR and VO 2 and 70% of maximum power output. To the authors' knowledge, this is the first study assessing cardiorespiratory parameters combined with measures of performance, perceived exertion, and biochemical variables during a field-based uphill TT in elite cyclists. [ABSTRACT FROM AUTHOR]
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Physiological Profile of an Uphill Time Trial in Elite Cyclists.
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Autor/in / Beteiligte Person: | Peinado, Ana B. ; Romero-Parra, Nuria ; Rojo-Tirado, Miguel A. ; Cupeiro, Rocío ; Butragueño, Javier ; Castro, Eliane A. ; Calderón, Francisco J. ; Benito, Pedro J. |
Zeitschrift: | International Journal of Sports Physiology & Performance, Jg. 13 (2018-03-01), Heft 3, S. 268-273 |
Veröffentlichung: | 2018 |
Medientyp: | academicJournal |
ISSN: | 1555-0265 (print) |
DOI: | 10.1123/ijspp.2016-0768 |
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