Abstract
PURPOSE: The purpose of this study was to investigate the time course of the effects of plasma donation on responses to severe intensity exercise. METHODS: Four women (mean ± SD: age, 27 ± 7 years; height, 163 ± 13 cm; weight, 62.9 ± 12.0 kg) and six men (age, 25 ± 2 years; height, 180 ± 6 cm; weight, 87.3 ± 6.2 kg) performed exhaustive cycle ergometer tests under control conditions, and then 2 h, 2 d, and 7 d following plasma donation. RESULTS: Times to exhaustion at baseline and 2 h, 2 d, and 7 d following plasmapheresis were 262 ± 41, 229 ± 59, 259 ± 67, and 267 ± 60 s, respectively; performance time was reduced (p < 0.01) 2 h after donation. Hemoglobin concentrations ([Hb]) before each test were 139 ± 19, 161 ± 13, 147 ± 15, and 144 ± 10 g•L-1; [Hb] was increased (p < 0.01) 2 h after donation. Maximal oxygen consumption (VO2max) values were 38 ± 5, 37 ± 4, 38 ± 4, and 38 ± 5 mL•kg-1•min-1; VO2max was not affected (p=0.56) by donation. The time constants of the primary phase of the two-component VO2max response in the exhaustive severe intensity exercise were 27 ± 6, 29 ± 8, 29 ± 8, and 26 ± 7 s; the kinetics of the VO2 response was unaffected (p=0.81) by plasma donation. CONCLUSION: The effects of plasma donation are short lived; no effect persists for two days. This information may be of value to athletes and others who might balance the altruism of plasma donation with personal concerns about performance.
Recommended Citation
Curtis, John H.; Hill, David W.; Burdette, Samantha; and Vingren, Jakob
(2011)
"Effect of Plasma Donation on Responses to Exhaustive Severe Intensity Cycle Ergometer Exercise,"
International Journal of Exercise Science: Conference Proceedings: Vol. 2:
Iss.
3, Article 44.
Available at:
https://digitalcommons.wku.edu/ijesab/vol2/iss3/44