Files
Abstract
Participation in exercise has long been recommended to improve health outcomes and overall quality of life. Resistance training (RT) is a mode of exercise shown to improve muscular endurance, muscular strength, and muscular hypertrophy. A great deal of research has been conducted assessing RT prescription as well as the recovery necessary between RT bouts. Measures of autonomic recovery, neuromuscular recovery, and perceived recovery are among the most common methods of recovery assessment. The first portion of this study assessed whether acute RT sessions with differing time-under tension influence autonomic function recovery over a 48-hour period as indicated by RMSSD, LF, HF, and LF/HF ratio in resistance trained males. Results showed that significant differences in internal load did not lead to significant differences in heart rate variability (HRV) when comparing the two exercise sessions. In addition, there were significant decreases in LnRMSSD from baseline to immediately-post, but no difference was seen between exercise sessions. Furthermore, LnRMSSD was not significant from baseline measures by 24-hours after the RT bout. The second portion of this study aimed to assess the agreement between alternative non-invasive measures of recovery (RMSSD, perceptual fatigue and energy, rating of perceived exertion, and neuromuscular fatigue) up to 48-hours after acute bouts of RT at differing TUT. Results from this study showed that measures of internal load were once again significantly different between sessions. In addition, there were multiple correlations between internal load and changes in HRV and soreness.