Comparison of a Continuous and Discontinuous GXT on VO 2 in Resistance-Trained and Endurance-Trained Males.

Autor: Shepherd BD; Department of Kinesiology, Mississippi State University, Mississippi State, MS, USA., Price FG; Department of Kinesiology, Mississippi State University, Mississippi State, MS, USA., Krings BM; Department of Exercise Science, University of Wisconsin-Platteville, Platteville, WI, USA., Smith JW; Department of Kinesiology, Mississippi State University, Mississippi State, MS, USA.
Jazyk: angličtina
Zdroj: International journal of exercise science [Int J Exerc Sci] 2022 Mar 01; Vol. 15 (4), pp. 414-422. Date of Electronic Publication: 2022 Mar 01 (Print Publication: 2022).
Abstrakt: Traditional graded exercise testing to assess maximal oxygen uptake (VO 2max ) may not well represent resistance-trained athletes due to their unfamiliarity with continuous exercise. For this reason, it is possible discontinuous exercise protocols may better represent the maximum capacity for aerobic metabolism in resistance-trained athletes, in order to provide a more valid assessment of VO 2max and risk of developing cardiovascular disease.
Purpose: The purpose of this experiment was to compare VO 2peak during a continuous and discontinuous modified Bruce protocol in both highly resistance-trained and endurance-trained males.
Methods: 19 college-aged males (age: 20.6 ± 1.9 yr, height: 176.5 ± 7.6 cm, weight: 85.0 ± 25.6 kg) of intermediate resistance- or endurance-trained status were recruited for this study. Participants completed a continuous and discontinuous modified Bruce protocol on two visits separated by seven days.
Results: A 2×2 one-way ANOVA revealed a significant group main effect for VO 2peak ( p = 0.004) in which endurance athletes achieved significantly higher VO 2peak values compared to resistance-trained athletes. A significant group main effect for RPE was found ( p = 0.045) in which endurance-trained reported significantly higher RPE values than the resistance-trained. A significant main effect for protocol for heart rate ( p = 0.033) was found in which individuals achieved higher heart rates during the continuous protocol compared to the discontinuous.
Conclusion: Although a discontinuous protocol with rest periods between stages is comparable to the exercise mode familiar to resistance-trained athletes, it did not provide any additional benefit to VO 2peak values.
Databáze: MEDLINE
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