aerobic power

Purpose: High-intensity interval training (HIIT) is an effective training method for improving the aerobic and anaerobic power of athletes; however, the role of activity volume in high-intensity interval training efficiency is still unclear. Therefore, in the present study, the effects of low- and high-volume HIIT on aerobic power, anaerobic power, and lactate response in young soccer players were compared. Method: In this study, 24 professional soccer players aged 20 to 22 who had no history of illness or taking supplements were chosen and randomly assigned to two groups of high-volume and low-volume HIIT. High-intensity interval training was completed for eight weeks. Training sessions included 5 min of warm-up, the main training phase, and cooling down. The training phase in the first week included 8 repetitions of 15 s of running with maximum power and 15 s of rest. Every week, the number of repetitions was increased by two. High-volume interval training was conducted for six sessions per week while low-volume interval training was performed for three sessions per week. After the training intervention, aerobic power was measured using the one-mile running test, and anaerobic power was evaluated using the Running-Based Anaerobic Sprint Test (RAST). Moreover, the level of blood lactate resulting from the RAST test was also measured using a lactometer. To statistical analyses repeated measure ANOVA was used. Results: Blood lactate levels were reduced by 12% (p=0.001) in the high-volume interval group and by 10% (p=0.001) in the low-volume interval group in response to exercise. In addition, statistical analysis revealed that the blood lactate levels in response to exercise after 8 weeks of training were similar in both groups. On the other hand, despite the rise in aerobic and anaerobic power in both groups, there was no significant difference in aerobic and anaerobic power between the high-volume and low-volume groups after eight weeks of interval training. Conclusions: Overall, the findings of the present research indicated that high-intensity interval training will reduce lactate and increase aerobic and anaerobic capacity, regardless of the training volume.

Aerobic power indicates the maximum amount of Oxygen intake that a person uses during strenuous physical activities under the sea. Accordingly, the significance of aerobic power in divers who spend much time under the water must be addressed. In order to investigate the matter, this study examines the correlation of aerobic power with increasing diving depth of divers and its relationship with their chest pain. The statistical population includes 70 students from a diving class of a Diving School in Bandar Anzali. The group consists of 20 male subjects randomly selected according to Morgan's table, aged 18 to 25, with no history of health issues, smoking, and professional sports activities. The results indicated a significant relationship between aerobic power and diving depth until the onset of chest pain; a significant inverse relationship between aerobic capacity and the intensity of chest pain; and a significant relationship was observed between aerobic capacity and duration of chest pain. These results are in favor of the effect of aerobic capacity in prevention of chest pain in divers.