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Relação entre freqüência cardíaca e consumo de oxigênio durante uma aula de "Step Training"

2008; UNIVERSIDADE CATÓLICA DE BRASÍLIA; Volume: 13; Issue: 1 Linguagem: Inglês

10.18511/rbcm.v13i1.609

2237-9002

Viviane Ribeiro Ávila Vianna, Vinícius de Oliveira Damasceno, Jefferson Vianna, Martim Bottaro, Januário Lima, J S Novaes,

Physical Education and Sports Studies

MARION et al. 8 described the relations between the percentage of maximum heart rate (%HRmax) and the percentage of the maximum oxygen consumption (%VO2max) in cyclic activities, which involve great muscle groups. The Step Training is an acyclic activity in which such relations are not known yet. The aim of the present study was to relate the % HRmax to the % VO2 max in choreographic exercises of Step Training, using a platform of 18 cm in a cadency of 135 bpm of the musical speed. The sample was composed by nine young, volunteer, apparently healthy individuals, who were used to practice Step Training, with ages between 16 e 23 years old (19.12 ± 2.53). The presented choreography was elaborated with the purpose of maintaining the characteristics of the class. The group was submitted to a series of tests of the final choreography during two months. The choreographic structure of the test was composed by three choreographic crossed blocks during six minutes. The volunteers were submitted to the Bruce Test on a Treadmill for evaluation of the VO2max using the TEEM 100 ergoexpirometer Aerosport. Ventilation, oxygen consumption and carbon (dioxido) production were made every 20 seconds. The results showed a VO2max of 39.5 ± 4.6 ml/kg/min with a HRmax of 194.4 ± 11.4 bpm. The VO2 of the Step Training was in 21.8 ± 3.1 ml/kg/min, with a HR of 174.8 ± 13.2 bpm. The identified numbers showed that the percentage found related to the VO2max and of the HRmax was in a 55% and 90% rate. It was concluded that a Step Training activity in Health Clubs, using a 18 cm platform, presents a relation between the %VO2max and % HRmax different to the one reported in cyclic activities (56% and 70%), which suggests that Step Training classes must not be prescribed by the %HRmax using the same pattern of the cyclical activities. Other studies must be done in order to explain these differences.