Open AccessThe Effect of Endurance Exercise Modality on Markers of Fatigue
Author(s) -
Andrew R. Moorea,
Jasmin C. Hutchinsona,
Christa R. Wintera,
Paul C. Daltona,
Vincent J. Paolonea
Publication year - 2021
Publication title -
international journal of kinesiology and sports science
Language(s) - English
Resource type - Journals
ISSN - 2202-946X
DOI - 10.7575/aiac.ijkss.v.9n.3p35
Subject(s) - rowing , rating of perceived exertion , heart rate , crossover study , blood lactate , repeated measures design , analysis of variance , physical medicine and rehabilitation , exercise intensity , medicine , physical therapy , intensity (physics) , psychology , blood pressure , placebo , mathematics , statistics , physics , alternative medicine , archaeology , pathology , quantum mechanics , history
Background: Exercise power output, and resulting fatigue, is regulated based on central and peripheral sensory input. Whether exercise mode, specifically, contributes to this regulation remains unexplored. Objective: This study was designed to determine if differences in markers of fatigue would be present during two time trials of similar duration and intensity, as a result of exercise mode (cycling and rowing). Method: In a randomized crossover design, nine subjects completed the two 7-min time trials, on different days. Exercise power output, heart rate, rating of perceived exertion, and blood lactate measurements were analyzed using repeated-measures ANOVAs. Results: There was a significant interaction between mode and time for power output (p =.02), but no significant differences between matched time points were observed for any of the dependent variables used to assess fatigue (p >.05). Conclusion: Similar levels of heart rate, perceived exertion, and blood lactate for time trials on different modes, but with the same duration and directed intensity, suggest that in a laboratory environment, exercise is regulated more by physiological disturbance and sensory cues than by exercise mode. These findings support the sensory tolerance limit of exercise fatigue.