Based on international scientific literature (ref 1-2) which indicates HIIT as an excellent method for improving VO2max, and continuing with a research effected in precedence with Triathletes (ref 4), it was decided to propose the same protocol to a new group of Triathletes (TAt) and to a Group of Control (CG). Methods: 16 male Italian Triathletes at national level agreed to participate in this study. They was divided in two groups from 8: TAt(age 37,2 ± 2,9years, weight 68,5 ± 5.9 kg, height 170 ± 4,99 cm) and CG(age 40,8 ± 6 years, weight 75,5 ± 7.2 kg, height 180 ± 5,33 cm). At first both groups performed an incremental test up to exhaustion using a Hydro Bike (Hydrorider Italy). The test consisted of a linear increment of pedaling frequency(RPM) every 2 mins. During the test they wore a portable metabolic device(VO2000 MedicGraphics USA)able to collect data of maximal oxygen uptake(VO2max, VO2/Kg max), maximal heart rate (HRmax) and to calculate anaerobic threshold (AT), CO2 Excess, VE max and Wmax . The TAt then participated in 12 sessions of Hydro Bike HIIT(training:30 mins- frequency:3 times /week - duration:4 weeks) following a well-established protocol of training: 4mins 90% HR max+3mins 70% HR max for 4 times. The CG followed a free training reducing and limiting the volume and the loads of training. After such a period both groups repeated the incremental test up to exhaustion. Results: The statistic analysis effected with t Student for coupled data, has statistically underlined a significant reduction of the VO2/Kg max, VO2 max on the CG after e period of a month of reduced activity, while the other variables have not statistically meaningful differences in both the groups in the two moments of the tests. Discussion: The element underlined in the CG, in which a reduction of the ability of performance is observed reveals that a protocol of training with Hydro Bikes performed with HIIT- low duration protocols, can be recommended to Triathletes as an alternative practice in low activity phases or in times of reduced training and to contrast some common detraining effects.
© Copyright 2012 17th Annual Congress of the European College of Sport Science (ECSS), Bruges, 4. -7. July 2012. Veröffentlicht von Vrije Universiteit Brussel. Alle Rechte vorbehalten.