Chronotype distribution in professional rugby players: Evidence for the environment hypothesis?

Chronobiology International
Lovemore KunorozvaLaura C Roden

Abstract

Individual sport athletes have been shown to comprise unusually high proportions of morning-types (MTs) coupled with a higher prevalence of the morningness-associated PERIOD3 variable number tandem repeat (VNTR) allele, PER35. The degree to which type of sport selected is influenced by either chronotype or genotype, or the extent to which sporting environment contributes to chronotype is unclear. The aim of this study was to assess chronotype and PER3 VNTR polymorphism frequencies in team sport players and non-athletic controls. South African male Super Rugby players (RUG, n = 120) and a control population of males with habitually low levels of physical activity (defined as exercise no more than twice a week; CON, n = 117) took part in this study. Participants completed the Horne-Östberg morningness-eveningness questionnaire to determine chronotype and donated buccal cell or blood samples from which PER3 VNTR genotype was established. There were more MTs in the RUG (47%) than CON group (23%, p < 0.001), more evening-types in the CON group (18%) compared to the RUG group (3%, p < 0.001), but no differences in PER3 VNTR genotype (p = 0.619) or allele (p = 0.758) frequencies. In both groups, more people carried the PER34 allele (R...Continue Reading

References

Oct 21, 1991·Nucleic Acids Research·D K Lahiri, J I Nurnberger
Feb 12, 1998·Nucleic Acids Research·S M Aljanabi, I Martinez
Oct 21, 1998·Sleep·D KatzenbergE Mignot
Aug 17, 2002·Chronobiology International·Ana Adan, Vincenzo Natale
Feb 6, 2003·Journal of Biological Rhythms·Till RoennebergMartha Merrow
Dec 4, 2004·American Journal of Medical Genetics. Part B, Neuropsychiatric Genetics : the Official Publication of the International Society of Psychiatric Genetics·Kazuo MishimaYumiko Mishima
Nov 9, 2005·Journal of Biological Rhythms·Nachiket A NadkarniMark G Thomas
Jan 25, 2006·Scandinavian Journal of Medicine & Science in Sports·G G MokoneM Collins
Oct 20, 2006·Journal of Human Genetics·Jayshan D CarpenSimon N Archer
Mar 17, 2007·Chronobiology International·Mario PedrazzoliSergio Tufik
Oct 16, 2007·Sleep Medicine Reviews·Till RoennebergMartha Merrow
Jul 30, 2008·Journal of Biological Rhythms·Christopher M CiarleglioCarl Hirschie Johnson
Dec 17, 2008·Physical Medicine and Rehabilitation Clinics of North America·Charles Samuels
Apr 8, 2010·Chronobiology International·Nicola L BarclayAlice M Gregory
Oct 26, 2010·Chronobiology International·Francesco PortaluppiYvan Touitou
Dec 22, 2010·British Journal of Sports Medicine·Andressa SilvaMarco Túlio de Mello
Apr 2, 2011·Chronobiology International·Róbert UrbánAdrien Rigó
Jun 2, 2011·Journal of Biological Rhythms·Anne-Marie ChangJeanne F Duffy
Sep 14, 2012·Chronobiology International·Lovemore KunorozvaLaura C Roden
Sep 26, 2012·Chronobiology International·Ana AdanChristoph Randler
Aug 1, 2013·Progress in Molecular Biology and Translational Science·Namni GoelDavid F Dinges
Oct 18, 2013·Chronobiology International·Ulla BromsTimo Partonen
Mar 29, 2014·Chronobiology International·Thomas C ErrenLiz Kuffer
Apr 1, 2014·Chronobiology International·Karla V AllebrandtTill Roenneberg
Mar 10, 2016·Chronobiology International·Nyambura Shawa, Laura Catherine Roden
Dec 30, 2016·Journal of Human Kinetics·Michele LastellaCharli Sargent

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