Repeated Sprint Training in Game Sports
The effectiveness of high-intensity aerobic interval training was previously reported in intermittent game sports (Ferrari Bravo, Impellizzeri, Castagna, Bishop & Wisloff, 2007; Iaia, Rampini & Bangsbo, 2009). Studies have shown that 8 to 12 wk of aerobic high-intensity running training (>85% HRmax) leads to VO2max enhancement (5% to 11%), increased running economy (3% to 7%), and lower blood lactate accumulation during submaximal exercise. Similar adaptations are observed when performing aerobic high-intensity training with small-sided games. Most of the studies used a comparably long interval duration (4 x 4 min), which doesn´t seem to be sport game specific. Thus, a first approach to this topic is the comparison of a high-intensity aerobic interval versus a repeated sprint ability training on aerobic, anaerobic and performance related variables in tennis players. Thirty-two participants were randomly assigned to either the interval training group (9 x 90 s; n=11), the repeated sprint training group (3 x 10 x 5 s maximal sprints; n=12) or the control group (n=9). The following outcomes were measured at baseline and after six weeks of training: tennis-specific endurance, 20-m sprint time, repeated sprint ability, jump height, VO2max and lactate threshold.