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Dose-response relationship between light exposure and cycling performance

Knaier, R. and Meister, S. and Aeschbacher, T. and Gemperle, D. and Rossmeissl, A. and Cajochen, C. and Schmidt-Trucksäss, Arno. (2016) Dose-response relationship between light exposure and cycling performance. Scandinavian Journal of Medicine & Science in Sports, 26 (7). pp. 794-801.

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Official URL: https://edoc.unibas.ch/62858/

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Abstract

Light has a stimulating effect on physical performance if scheduled according to the chronotype, but dose-dependent effects on performance have not yet been examined. Three groups of healthy men (25.1 ± 3.1 years) were exposed to light for different durations in a parallel group design before a 40-min time-trial. In each group, subjects were exposed to either bright light (BL, 4420 lx) or moderate light (ML, 230 lx) in a randomized order in a crossover design. The durations of light exposure were 120 min prior to and during exercise (2HEX; n = 16), 60 min prior to and during exercise (1HEX; n = 10), or only for 60 min prior to exercise (1H; n = 15). Total work performed during the time-trial in kJ in the 2HEX group was significantly higher in the BL setting (527 kJ) than in ML (512 kJ) (P = 0.002), but not in 1HEX (BL: 485 kJ; ML: 498 kJ) or 1H (BL: 519 kJ; ML: 514 kJ) (P = 0.770; P = 0.485). There was a significant (P = 0.006) positive dose-response relationship between the duration of light exposure and the work performed over the three doses of light exposure. A long duration light exposure is an effective tool to increase total work in a medium length time-trial in subjects normalized for their individual chronotype.
Faculties and Departments:03 Faculty of Medicine
03 Faculty of Medicine > Departement Sport, Bewegung und Gesundheit
03 Faculty of Medicine > Departement Sport, Bewegung und Gesundheit > Bereich Sport- und Bewegungsmedizin
03 Faculty of Medicine > Departement Sport, Bewegung und Gesundheit > Bereich Sport- und Bewegungsmedizin > Sportmedizin (Schmidt-Trucksäss)
UniBasel Contributors:Knaier, Raphael
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Wiley-Blackwell - STM
ISSN:0905-7188
e-ISSN:1600-0838
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:25 Aug 2018 12:35
Deposited On:25 Aug 2018 12:35

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