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


Braulio H.M. Branco 1 , * , Luis M. Massua 4 , Leonardo V. Andreato 1 , Bruno F. Marinho 5 , Bianca Miarka 1 , Luis Monteiro 6 , Emerson Franchini 1

1 Martial Arts and Combat Sports Research Group of Physical Education and Sport School, University of So Paulo, Brazil

4 Faculty of Human Kinetics, Technical University of Lisbon, Cruz Quebrada, Portugal

5 Federal University of Viosa, Brazil

6 Portuguese Judo Federation

How to Cite: Branco B H, Massua L M, Andreato L V, Marinho B F, Miarka B, et al. Association between the Rating Perceived Exertion, Heart Rate and Blood Lactate in Successive Judo Fights (Randori), Asian J Sports Med. Online ahead of Print ; 4(2):34494. doi: 10.5812/asjsm.34494.


Asian Journal of Sports Medicine: 4 (2); 125-130
Published Online: February 22, 2013
Article Type: Research Article
Received: August 30, 2012
Accepted: February 14, 2013


Purpose: This study aims to investigate the association between the rating of perceived exertion (RPE), heart rate (HR) and the blood lactate concentration ([La]) in successive judo fight simulations (randori).

Methods: Ten athletes participated in the study (age: 25.62.1 years; stature: 1.750.07 m; body mass: 75.614.9kg; %BF: 11.57.8%; practice: 14.56.2 years) and completed 4 judo fight simulations (T1 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.

Results: Significant correlations were observed between: (1) CR-10 and HR (T2: r =0.70; T3: r =0.64; both, P<0.05); (2) ?CR-10 and ?[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 2nd (T2) and 3rd (T3) judo fight simulations (P<0.05).

Conclusion: 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.

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