Association between the Rating Perceived Exertion, Heart Rate and Blood Lactate in Successive Judo Fights [Randori]

ABSTRACT

This study aims to investigate the association between the rating of perceived exertion [RPE], heart rate [IIR] and the blood lactate concentration [[La]] in successive judo fight simulations [randori]. Ten athletes participated in the study [age 25.6 +/- 2.l years; stature 1.75 +/- 0.07 m; body mass 75.6 +/- 14.9kg; %BF 11.5 +/- 7.8%; practice 14.5 +/- 6.2 years] and completed 4 judo fight simulations [Tl to T4] with duration of 5 min separated by 5 min passive recovery periods. Before each randori, [La| and HR were collected, and after each randori, the same measures and the RPE [CR-10 scale] were collected. Significant correlations were observed between [1] CR-10 and HR [T2 r =0.70; T3 r =0.64; both, P<0.05]; [2] deltaCR-10 and delta[La] [T1-T2 r = .71, P< 0.05; T2-T3 r =0.92, P<0.01; T3-T4 r=0.73, P<0.05]. Moreover, significant differences were noted in the behavior of the HR between the 2[nd] [T2] and 3[rd] [T3] judo fight simulations [P<0.05]. The use of CR-10 in the evaluation process, as well as in deciding the load of training in judo, should be done with caution