Category
3MT - Three Minute Thesis
Description
Maximal aerobic capacity (ie. VO2max) represents an individual’s cardiovascular fitness level. Prior studies have assessed various VO2max protocols with several studies suggesting that a booster max, with a two-minute (2min) active recovery period, improves final VO2max values in many subjects. However, a four-minute (4min) active recovery period for booster max testing has not been evaluated. This study’s purpose was to assess the impact of 2min vs. 4min active recovery on VO2max values. In a counter-balanced order, 41 aerobically trained males completed one of two treadmill VO2max GXT (Max1) trials followed by a 2min or 4min active recovery followed by a second max exertion (Max2). Seventy-two hours later, subjects completed a 2nd GXT with the alternate recovery time used during the first trial. Max1 and Max2 values for both 2min and 4min were compared using a Paired-Samples t-Test with significant differences occurring at p < 0.05. For 2min, Max1 (53.35 + 8.55 ml/kg/min) and Max2 (53.58 + 8.99 ml/kg/min) were significantly different (p < 0.001). Max2 for 2min was significantly different (p < 0.001) than Max2 for 4min (54.7 + 8.84 ml/kg/min). Max1 (52.56 + 8.71 ml/kg/min) and Max2 for 4min were significantly different (p < 0.001). Max1 for 2min and Max1 for 4min were significantly different (p < 0.001). Mean results suggest Max 2 for both 2min and 4min active recovery were significantly different, and 4min did yield significantly higher values from Max1 to Max2. Additionally, individual data suggests that 63.4% of subjects benefitted (+2.22 ml/kg/min) from 2min active recovery, yet 75.6% of subjects did better (+2.94 ml/kg/min) for 4min active recovery. Future research should examine potential changes in VO2max with differing 2min vs 4min active recovery booster max protocols using aerobically trained females as well as different types of male and female aerobic athletes.
Effects of Two-Minutes Versus Four-Minutes Active Recovery on a “Booster” VO2max Treadmill Test
3MT - Three Minute Thesis
Maximal aerobic capacity (ie. VO2max) represents an individual’s cardiovascular fitness level. Prior studies have assessed various VO2max protocols with several studies suggesting that a booster max, with a two-minute (2min) active recovery period, improves final VO2max values in many subjects. However, a four-minute (4min) active recovery period for booster max testing has not been evaluated. This study’s purpose was to assess the impact of 2min vs. 4min active recovery on VO2max values. In a counter-balanced order, 41 aerobically trained males completed one of two treadmill VO2max GXT (Max1) trials followed by a 2min or 4min active recovery followed by a second max exertion (Max2). Seventy-two hours later, subjects completed a 2nd GXT with the alternate recovery time used during the first trial. Max1 and Max2 values for both 2min and 4min were compared using a Paired-Samples t-Test with significant differences occurring at p < 0.05. For 2min, Max1 (53.35 + 8.55 ml/kg/min) and Max2 (53.58 + 8.99 ml/kg/min) were significantly different (p < 0.001). Max2 for 2min was significantly different (p < 0.001) than Max2 for 4min (54.7 + 8.84 ml/kg/min). Max1 (52.56 + 8.71 ml/kg/min) and Max2 for 4min were significantly different (p < 0.001). Max1 for 2min and Max1 for 4min were significantly different (p < 0.001). Mean results suggest Max 2 for both 2min and 4min active recovery were significantly different, and 4min did yield significantly higher values from Max1 to Max2. Additionally, individual data suggests that 63.4% of subjects benefitted (+2.22 ml/kg/min) from 2min active recovery, yet 75.6% of subjects did better (+2.94 ml/kg/min) for 4min active recovery. Future research should examine potential changes in VO2max with differing 2min vs 4min active recovery booster max protocols using aerobically trained females as well as different types of male and female aerobic athletes.
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Graduate