Back to Search
Start Over
Effects of Prior Upper Body Exercise on the 3-min All-Out Cycling Test in Men.
- Source :
-
Medicine and science in sports and exercise [Med Sci Sports Exerc] 2020 Nov; Vol. 52 (11), pp. 2402-2411. - Publication Year :
- 2020
-
Abstract
- Introduction: Prior upper body exercise reduces the curvature constant (W') of the hyperbolic power-duration relationship without affecting critical power. This study tested the hypothesis that prior upper body exercise reduces the work done over the end-test power (WEP; analog of W') during a 3-min all-out cycling test (3MT) without affecting the end-test power (EP; analog of critical power).<br />Methods: Ten endurance-trained men (V˙O2max = 62 ± 5 mL·kg·min) performed a 3MT without (CYC) and with (ARM-CYC) prior severe-intensity, intermittent upper body exercise. EP was calculated as the mean power output over the last 30 s of the 3MT, whereas WEP was calculated as the power-time integral above EP.<br />Results: At the start of the 3MT, plasma [La] (1.8 ± 0.4 vs 14.1 ± 3.4 mmol·L) and [H] (42.8 ± 3.1 vs 58.6 ± 5.5 nmol·L) were higher, whereas the strong ion difference (41.4 ± 2.2 vs 30.9 ± 4.6 mmol·L) and [HCO3] (27.0 ± 1.9 vs 16.9 ± 3.2 mmol·L) were lower during ARM-CYC than CYC (P < 0.010). EP was 12% lower during the 3MT of ARM-CYC (298 ± 52 W) than CYC (338 ± 60 W; P < 0.001), whereas WEP was not different (CYC: 12.8 ± 3.3 kJ vs ARM-CYC: 13.5 ± 4.1 kJ, P = 0.312). EP in CYC was positively correlated with the peak [H] (r = 0.78, P = 0008) and negatively correlated with the lowest [HCO3] (r = -0.74, P = 0.015).<br />Conclusions: These results suggest that EP during a 3MT in endurance-trained men is sensitive to fatigue-related ionic perturbation.
Details
- Language :
- English
- ISSN :
- 1530-0315
- Volume :
- 52
- Issue :
- 11
- Database :
- MEDLINE
- Journal :
- Medicine and science in sports and exercise
- Publication Type :
- Academic Journal
- Accession number :
- 32366795
- Full Text :
- https://doi.org/10.1249/MSS.0000000000002395