Monitoramento da carga de treinamento em atletas de CrossFit® durante um ciclo de quatro semanas

Abstract

CrossFit® is characterized by being a training program that improves physical performance through different stimuli through functional and constantly varied movements. Controlling training load has been a constant discussion in science. The literature still lacks studies that describe the monitoring and control of training load in CrossFit®. Objective: Monitor training load in CrossFit® athletes over a four-week cycle. Methods: 20 to 24 training sessions were monitored in nine CrossFit® athletes. Monitoring was carried out every week through measurements of heart rate (HR), perceived session exertion (RPE-s), monotony, strain, acute:chronic load ratio (CTAC) and vertical jump (SV). Athletes were observed during a specific four-week training cycle. Results: HR, RPE-s, total training time (TT), training load (CT), CTAC, monotony and strain showed normal distribution (p > 0.05). The coefficient of variation presented relatively ideal values (< 25%), except for the highest “monotony” and “strain” variables (> 25%). HRpeak, HRmax, RPE-s, TT, CT, CTAC, monotony and strain did not show the assumed sphericity, but only for HRpeak at different times (p = 0.003). One-way ANOVA with repeated measures showed that there was no effect for any of the variables [HRpeak: FGn (1.486, 11.886) = 4.067; p=0.055; PSE-s: F(3, 24)=1.783; p=0.177; TT: F(3, 24)=0.984; p=0.417; CT: F(3, 24)=1.566; p=0.223; CTAC: F(3, 24) = 1.491; p=0.242; monotony: F(3, 24) =0.258; p=0.855; and strain: F(3, 24)=0.238; p=0.869]. Resting HR and SV assumed sphericity for the different times (HRrep: p=0.806; SV: p=0.110), but with no effect of resting HR [F(4, 32) = 1.895; p=0.135] and SV [F(1.955, 15.643) = 3.347; p=0.063]. Pearson's correlation showed that there was no relationship (p>0.05), at any time during training, between SV and the variables TT, CT, CTAC, monotony and strain. Conclusion: It is concluded that the values of HRpeak, HRmax and HR at rest did not undergo significant changes during the four weeks of training monitoring. Regarding RPE-s, monotony and strain did not undergo significant changes over the four weeks of training. CTAC remained within the safe training zone and did not undergo significant changes during the four-week cycle.