Honors Theses

Date of Award


Document Type

Undergraduate Thesis


Health, Exercise Science, and Recreation Management

First Advisor

John Garner

Relational Format



High-intensity resistance training alongside aerobic training has been seen to improve aerobic performance due to the gains strength that accompany said resistance training. However, it has been documented that the exercise-induced muscle damage (EIMD) that results from the resistance training can impair aerobic performance in the days following. Therefore, the purpose of this study was to assess the time-course of recovery from EIMD for up to seven days following muscle-damaging protocol. Eight recreationally trained participants (age 21.88 ± 0.99 yr., mass 70.02 ± 11.14 kg, height 171.61 ± 8.99 cm) volunteered to participate in five testing sessions over the course of approximately two weeks. The first testing session included a baseline measurement of treadmill VO2max. During the second testing session, muscle-damaging protocol consisting of eccentric split squats was performed, followed by another VO2max test. Testing sessions 3, 4, and 5 all consisted of VO2max tests 48 hours, 96 hours, and 7 days following muscle-damaging protocol. The participants' baseline VO2max and time to exhaustion scores served as their control group for the experiment. Significant (p < 0.05) losses in mean VO2max values were observed for the entire testing period. The only significant decrease in mean time to volitional exhaustion was observed immediately after muscle-damaging protocol, but time to exhaustion did not reach that of baseline measures until 7 days post-EIMD, where they were observed to have eclipsed that of baseline measures. Therefore, coaches/trainers are advised to allot their athletes at least one week of active recovery following high-intensity resistance training before return to competition.

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