Heart rate and movement time during recreational surfing - pilot study

Brasil, F.K., Andrade, D.R., Oliveira, L.C., Ribeiro, M.A. e Matsudo, V.K.R. Heart rate and movement time during recreational surfing - pilot study. Rev. Bras. Cien. e Mov. 9 (4): 65-75, 2001. The purpose of this study was to determine heart rate, intensity and movement time during recreational surfing. Ten male surfers participated in this study (mean age: 27.7±7.4 years; practice time: 14.1±6.2 years; frequency: 6.5±0.8 days/week). Heart rate data (HR) were recorded using a Polar (Accurex Plus, Vantage NV/XL), at 5 second intervals during a recreational surfing session (14-81 minutes) at Itamambuca's beach or Tombo's beach (Sao Paulo - Brazil). Mean HR and percentage (%) of time spent at the intensity levels (Heyward, 1998) were calculated: 81% HRmax (vigorous). Five individuals were analized by vi- deo using a software (Celafiscs, 2000) for the count of movement time at 4 categories (paddling, stationary, riding wave and others). Mean HR during the session of recreational surfing was 135.0±23.4 bpm; 41.0% of total time HR manteined at low, 36.3% at moderate and 22.6% at vigorous intensity. Mean total time spent paddling, stationary, riding wave and others (recovering and getting back on the surfboard after falling off) represented 54.4%, 27.8%, 3.7% and 5.1%, of the total time surfing respectively. It suggests a low to moderate intensity and paddling as the type of movement predominant during recreational surfing.