Examining pacing profiles in elite female road cyclists using exposure variation analysis.

Abstract:

OBJECTIVE:In this study, the amplitude and time distribution of power output in a variety of competitive cycling events through the use of a new mathematical analysis was examined: exposure variation analysis (EVA). DESIGN:Descriptive field study. SETTING:Various professional road cycling events, including; a 5-day-eight-stage tour race, a 1-day World Cup event and the Australian National Individual Time Trial Championships. PARTICIPANTS:9 elite female cyclists (mean (SD), mass = 57.8 (3.4) kg, height = 167.3 (2.8) cm, Vo(2)peak = 63.2 (5.2) ml kg(-1) min(-1)). INTERVENTIONS:None. MAIN OUTCOME MEASUREMENTS:The variation in power output and the quantification of the total time and acute time spent at various exercise intensities during competitive professional cycling were examined. Predefined levels of exercise intensity that elicited first ventilation threshold, second ventilation threshold and maximal aerobic power were determined from a graded exercise test performed before the events and compared with power output during each event. RESULTS:EVA exposed that power output during the time trial was highly variable (EVA(SD) = 2.81 (0.33)) but more evenly distributed than the circuit/criterium (4.23 (0.31)) and road race events (4.81 (0.96)). CONCLUSION:EVA may be useful for illustrating variations in the amplitude and time distribution of power output during cycling events. The specific race format influenced not only the overall time spent in various power bands, but also the acute time spent at these exercise intensities.

journal_name

Br J Sports Med

authors

Abbiss CR,Straker L,Quod MJ,Martin DT,Laursen PB

doi

10.1136/bjsm.2008.047787

subject

Has Abstract

pub_date

2010-05-01 00:00:00

pages

437-42

issue

6

eissn

0306-3674

issn

1473-0480

pii

bjsm.2008.047787

journal_volume

44

pub_type

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