Circadian Cycle and Its Influence on Parameters of Aerobic Training

Abstract

Objectives: This study aims to evaluate the Influence of two distinct Periods of the day on maximal aerobic power in young Athletes mountain bike. Volunteers are the mountain bike Athletes, 37.83 ± 8.87 years, and underwent two progressive maximal exercise test on a cycle Ergometer at two times of day. Gauging the behavior glucose and heart rate. The verification of normality of data was performed by the Shapiro-Wilk test for analysis of variables was Adopted t test for paired samples. Statistical we Adopted an evidence for p <0.05. Results: Were the glucose threshold results not statistically significant. However trends indicating were there a better outcome in the evening. The maximal workload, maximal heart rate and glycemic load threshold. Conclusions: The results show trends on performance and circadian rhythm, and yet, the routine or team chosen for sensivity training appears to the circadian cycle.

Cronobiological effects over performance in individual sports: a systematic review (2000-2015)

“…Na análise global aos trabalhos apresentados verificamos que em cinco deles não se verificou a influência dos ritmos circadianos nas variáveis analisadas (Bardis et al, 2008;Santana et al, 2008;Cruz et al, 2011;Cruz et al, 2014a;Cruz et al, 2014b). Noutros cinco estudos verifica-se a interferência dos ritmos circadianos em algumas das variáveis estudadas, mas não em todas elas (Martin et al, 2001;Atkinson et al, 2005;Bessot et al, 2006;Hobson et al, 2009, Kunorozva et al, 2014.…”

“…Em quatro artigos não se verificaram alterações significativas na frequência cardíaca ao longo do dia Cruz et al, 2011;Cruz et al, 2014a;Cruz et al, 2014b). Pelo contrário, dois estudos concluíram que os ritmos circadianos afetam esta variável (Carandente et al, 2006;Hobson et al, 2009).…”

“…Quatro estudos não verificaram influências dos ritmos circadianos nos valores de potên-cia (Bardis et al, 2008;Cruz et al, 2014a;Kunorozva et al, 2014;Cruz et al, 2014b).…”

“…Apenas um estudo não encontrou diferenças significativas ao longo do dia (Blonc et al, 2010). No entanto, em testes superiores a 5 minutos essas diferenças não se verificaram para a maioria dos autores (Bardis et al, 2008;Cruz et al, 2014a;Cruz et al, 2014b;Kunorozva et al, 2014).…”

Chronobiological Effects on Mountain Biking Performance

“…Several studies that analyze the dynamics of the circadian rhythms in cycling have been inconclusive. Some concluded that, in cycling, the performance is not affected by the period of the day [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. Others have observed significant differences, for similar exertion, on several variables measured at different times of the day [ 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ].…”