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Calgary KNES 373 - Knes 373 Lab 5

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1Running head: EFFECTS OF ACTIVE AND PASSIVE RECOVERY IN BLOOD LACTATECONCENTRATION AMONGST ACTIVE AND HEALTHY ADULTS Effects of Active and Passive Recovery in Blood Lactate Concentration Amongst Active andHealthy Adults Angie Olukunmi - 30075499KNES 373 Lab Section 03University of Calgary For: Saied Jalal Aboodarda and Keenan MacDougall March 02, 20212DIFFERENCES IN POWER OUTPUT AMONGST SPEEDSKATERS AND SNOWBOARDERSDiscussionDuring this experiment two different methods of recovery were evaluated. A 15-minutes passive recovery (PR) versus a 15-minute active recovery (AR) after a 3 set, 30 second Wingate test. Although there was a slightly lower level of blood lactate levels in the AR process (12.98 mmol/L) compared to the PR (13.40 mmol/L), when looking at the statistical significance between the two methods, it was close to having a significant difference but not enough to be considered conclusive. The p-value, comparison of blood lactate between active and passive groups at 15-minutes is 0.052 which is slightly greater than 0.05. In theory for this particular sample size, AR should have a lower 15-minute blood lactate level due to increased blood flow to help flush the lactate from the tissue and slightly higher metabolism due to the continued low level aerobic activity that would help to convert some of the lactate to pyruvate and then conversion in the muscles to ATP. Further experimentation, as well as a larger sample size would be required to conclude if the difference is significant or not. In a previous study Toubekis (2008)found that using a variation on AR versus PR, of using a two-stage process, of 5-minutes of AR followed by 10-minutes of PR was more effective in removing blood lactate levels and improving performance, versus a complete 15-minute PR. It is believed that this was due to increased blood flow and the longer period of elevated body temperature to allow for restoration of high-energy phosphates. Mota (2017) depicts in this study a 10-minute active recovery has an increase in the removal of blood lactate levels. This was believed to be due to the increase in the blood flow, which promoted the buffering of H+ ions. This study also found a slight improvement in the subject’s performance in the 100m and 200m swim distances. Although AR does show promise in helping to improve performance in athletes, the findings from this3DIFFERENCES IN POWER OUTPUT AMONGST SPEEDSKATERS AND SNOWBOARDERSexperiment and other studies demonstrate that further evaluation with larger sample size is needed with possibly other variations to the AR versus PR to determine an ideal duration and combination to improve performance.4DIFFERENCES IN POWER OUTPUT AMONGST SPEEDSKATERS AND SNOWBOARDERSReferencesMota, M. R., Dantas, R. A. E., Oliveira-Silva, I., Sales, M. M., da Costa Sotero, R., Espíndola Mota Venâncio, P., … de Lima, F. D. (2017). Effect of self-paced active recovery and passive recovery on blood lactate removal following a 200 m freestyle swimming trial. Open Access Journal of Sports Medicine, Volume 8, 155–160., A. G., Tsolaki, A., Smillos, I., Douda, H. T., Kourtesis, T., & Tokmakidis, S. P. (2008). Swimming performance after passive and active recovery of various durations. International Journal of Sports Physiology and Performance, 3(3), 375–386.

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