Comparison of the influence of age on cycling efficiency and the energy cost of running in well-trained triathletes
Locomotive efficiency is cited as an important component to endurance performance; however, inconsistent observations of age-related changes in efficiency question its influence in the performance of masters athletes.
This study examined locomotive efficiency in young and masters triathletes during both a run and cycle test.
Twenty young (28.5 ± 2.6 years) and 20 masters (59.8 ± 1.3 years) triathletes completed an incremental cycling and running test to determine maximal aerobic consumption (VO2max) and the first ventilatory threshold (VT1). Participants then completed 10-min submaximal running and cycling tests at VT1 during which locomotive efficiency was calculated from expired ventilation. Additionally, body fat percentage was determined using skin-fold assessment.
During the cycle and run, VO2max was lower in the masters (48.3 ± 5.4 and 49.6 ± 4.8 ml kg−1 min−1, respectively) compared with young (61.6 ± 5.7 and 62.4 ± 5.2 ml kg−1 min−1, respectively) cohort. Maximal running speed and the cycling power output corresponding to VO2max were also lower in the masters (15.1 ± 0.8 km h−1 and 318.6 ± 26.0 W) compared with the young (19.5 ± 1.3 km h−1 and 383.6 ± 35.0 W) cohort. Cycling efficiency was lower (−11.2 %) in the masters compared with young cohort. Similar results were observed for the energy cost of running (+10.8 %); however, when scaled to lean body mass, changes were more pronounced during the run (+22.1 %).
Within trained triathletes, ageing can influence efficiency in both the run and cycle discipline. While disregarded in the past, efficiency should be considered in research examining performance in ageing athletes.
KeywordsEconomy Energy Triathlon Performance
Maximal aerobic speed
Maximal aerobic power
Maximal aerobic consumption
First ventilatory threshold
Complaince with ethical standards
Conflict of interest
The authors have disclosed that they have no significant relationships with, or financial interest in, any commercial companies pertaining to this article. No funding was received for this work.
- Evans SL, Davy KP, Stevenson ET, Seals DR (1995) Physiological determinants of 10-km performance in highly trained female runners of different ages. J Appl Physiol (1985) 78(5):1931–1941Google Scholar
- Rust CA, Lepers R, Stiefel M, Rosemann T, Knechtle B (2013) Performance in Olympic triathlon: changes in performance of elite female and male triathletes in the ITU World Triathlon Series from 2009 to 2012. Springerplus. doi: 10.1186/2193-1801-2-685
- Sultana F, Abbiss CR, Louis J, Bernard T, Hausswirth C, Brisswalter J (2012) Age-related changes in cardio-respiratory responses and muscular performance following an Olympic triathlon in well-trained triathletes. Eur J Appl Physiol 112(4):1549–1556. doi: 10.1007/s00421-011-2115-9 PubMedCrossRefGoogle Scholar
- Trappe SW, Costill DL, Vukovich MD, Jones J, Melham T (1996) Aging among elite distance runners: a 22-yr longitudinal study. J Appl Physiol (1985) 80(1):285–290Google Scholar