2134/16967 Michael Gleeson Michael Gleeson Ida Svendsen Ida Svendsen Thomas A. Haugen Thomas A. Haugen Espen Tonnessen Espen Tonnessen Effect of an intense period of competition on race performance and self-reported illness in elite cross-country skiers. Loughborough University 2015 Endurance athletes Upper-respiratory illness Overreaching Training load Medical and Health Sciences not elsewhere classified 2015-03-12 11:49:39 Journal contribution https://repository.lboro.ac.uk/articles/journal_contribution/Effect_of_an_intense_period_of_competition_on_race_performance_and_self-reported_illness_in_elite_cross-country_skiers_/9628121 Aim: To determine whether participating in a cross-country skiing stage race (TDS) affects subsequent illness incidence, training and race performance. Methods: Self-reported training and illness data from 44 male and female elite cross-country skiers were included. In total, 125 years’ of data was collected (2-3 seasons per athlete). Illness incidence, training load and performance in international competitions were calculated for athletes who did and did not participate in TDS. Results: 48% of athletes reported becoming ill during or in the days immediately after taking part in TDS, vs. 16% of athletes who did not participate. In both groups, illness incidence was somewhat lower for female athletes. For male athletes, race performance was significantly worse for 6 weeks following TDS vs. 6 weeks before TDS. Furthermore, while female athletes who participated in TDS performed relatively better than controls in Olympics/World Championships, male athletes who participated in TDS typically performed worse in subsequent major championships. Conclusion: Participating in TDS appears to result in ~3-fold increase in risk of illness in this period. Male athletes appear more prone to illness and also see a drop in race performance following TDS, possibly linked to differences in training load before and after the event.