Efeito da intensidade do exercício de corrida intermitente 30s:15s no tempo de manutenção no ou próximo do VO2max

Abstract

IntroduçãoO consumo máximo de oxigênio (VO 2 max) é definido como a maior quantidade de oxigênio que pode ser captada do ar ambiente, transportada e utilizada pelas células durante a atividade física (HILL e LUPTON, 1923;HAWKINS et al., 2007). Dentre as características fisiológicas encontradas em atletas, o VO 2 max é um dos mais relevantes para determinar a eficiência do sistema cardiorrespiratório, e um importante indicador do desempenho para atletas de provas com alta demanda do sistema aeróbio, como as corridas de fundo e meio fundo no atletismo (BRANDON, 1995; MIDGLEY, MCNAUGHTON e WILKINSON, 2006; MIDGLEY, MCNAUGHTON e JONES, 2007 Motriz, Rio Claro, v.19 n.1, p.207-216, jan./mar. 2013 Effect of intensity of intermittent running exercise 30s:15s at the time maintenance at or near VO 2 maxAbstract: The present study compared the time maintained above 90% (t90VO 2 max) or 95% VO 2 max (t95VO 2 max) in three different exercise intensities. After performing an incremental test to determine VO 2 max, eight physical education active students (23 ± 3 years) performed three intermittent exercise sessions (100, 110 e 120% velocity of VO 2 max (vVO 2 max)) with ratio effort:recovery of 30s:15s. The t95%VO 2 max was significantly higher at 110%vVO 2 max (EI 110% ) (218.1 ± 81.6s) compared to 100% vVO 2 max (EI 100% ) (91.9 ± 75.2s) and 120%vVO 2 max (EI 120% ) (126.3 ± 29.4s), but without differences between EI 100% and EI 120% . The t90%vVO 2 max was significantly different only between EI 110% and 120%. Therefore, we conclude that during intermittent exercise with ratio 30s:15s, the intensity of 110%vVO 2 max appears more appropriate to maintain VO 2 max for a longer time.

High intensity interval training with body weight: the new calisthenics?

“…Considering this approach we can distribute the exercises into two groups: exercises with a single pattern of movement (simple) and exercises with combined movement patterns (complex) (Figure 1). According to previous studies (25)(26)(27)(28) , the execution of complex exercises requires higher energy expenditure (25)(26)(27) and higher metabolic demand (26,28) . This characteristic can affect the dynamics of the training session considering the quality of the motor gestures, the fatigue and the total energy expenditure of the sessions of "HBW" (25)(26)(27)(28)(29) .…”

“…According to previous studies (25)(26)(27)(28) , the execution of complex exercises requires higher energy expenditure (25)(26)(27) and higher metabolic demand (26,28) . This characteristic can affect the dynamics of the training session considering the quality of the motor gestures, the fatigue and the total energy expenditure of the sessions of "HBW" (25)(26)(27)(28)(29) . Thus, based on the proposed classification of movements, it is possible to consider three strategies for the selection of exercises.…”

Physiological aspects and energetic contribution in 20s:10s high-intensity interval exercise at different intensities

“…Considering that maintaining higher V•O 2 values during exercise is essential for V•O 2MAX increase (Midgley & Mc Naughton, 2006), the optimal intensity for aerobic power development in athletes, in this time structure, would be near to 130%PPO. Previously, on a treadmill, other studies demonstrated that for 30s:15s training in active young men and 15s:15s in middle-aged runners, the intensities of 110%vV•O 2MAX and100%vV•O 2MAX , respectively, presented the higher oxygen consumption (Aguiar et al, 2013;Billat et al, 2001). Otherwise, subjects maintained the V•O 2 closed to 90-95% of the V•O 2MAX , which is lower than the 100% reached in the original study and questioned the author's statement that the 'Tabata training' should be considered as ''one of the most energetically effective exercise training protocols for maximally improving both the aerobic and anaerobic energy-supplying systems'' (Tabata, 2019).…”

Peer Review #1 of "Physiological aspects and energetic contribution in 20s:10s high-intensity interval exercise at different intensities (v0.1)"

“…Considering that maintaining higher VȮ 2 values during exercise is essential for VȮ 2MAX increase (Midgley & Mc Naughton 2006), the optimal intensity for aerobic power development in athletes, in this time structure, would be near to 130%PPO. Previously, on a treadmill, other studies demonstrated that for 30s:15s training in active young men and 15s:15s in middle-aged runners, the intensities of 110%vVȮ 2MAX and 100%vVȮ 2MAX , respectively, presented the higher oxygen consumption (Aguiar et al 2013;Billat et al 2001). Otherwise, subjects maintained the VȮ 2 closed to 90-95% of the VȮ 2MAX , which is lower than the 100% reached in the original study and questioned the author's statement that the 'Tabata training' should be considered as "one of the most energetically effective exercise training protocols for maximally improving both the aerobic and anaerobic energy-supplying systems" (Tabata 2019).…”