Exercise-induced prostacyclin release positively correlates with VO2max in young healthy men

Title:

Exercise-induced prostacyclin release positively correlates with VO2max in young healthy men

Creator:

Zoladz, Jerzy A., Majerczak, J., Duda, K., and Chłopicki, S.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:5bd229f1-77e0-4003-90f8-bd0d6c535c9c
uuid:5bd229f1-77e0-4003-90f8-bd0d6c535c9c

Subject:

Biochemie. Molekulární biologie. Biofyzika, biochemie, prostaglandiny, výkon, biochemistry, prostaglandins, performance, exercise, maximal oxygen uptake, power output, 2, and 577

Type:

article, články, model:article, and TEXT

Format:

print

Description:

In this study we have evaluated the effect of maximal incremental cycling exercise (IE) on the systemic release of prostacyclin (PGI2), assessed as plasma 6-keto-PGF1α concentration in young healthy men. Eleven physically active - untrained men (mean ± S.D.) aged 22.7 ± 2.1 years; body mass 76.3 ± 9.1 kg; BMI 23.30 ± 2.18 kg · m-2; maximal oxygen uptake (VO2max) 46.5 ± 3.9 ml · kg-1 · min-1, performed an IE test until exhaustion. Plasma concentrations of 6-keto-PGF1α, lactate, and cytokines were measured in venous blood samples taken prior to the exercise and at the exhaustion. The net exercise-induced increase in 6-keto-PGF1α concentration, expressed as the difference between the end-exercise minus pre-exercise concentration positively correlated with VO2max (r=0.78, p=0.004) as well as with the net VO2 increase at exhaustion (r=0.81, p=0.003), but not with other respiratory, cardiac, metabolic or inflammatory parameters of the exercise (minute ventilation, heart rate, plasma lactate, IL-6 or TNF-α concentrations). The exercise-induced increase in 6-keto-PGF1α concentration was significantly higher (p=0.008) in a group of subjects (n=5) with the highest VO2max when compared to the group of subjects with the lowest VO2max, in which no increase in 6-keto-PGF1α concentration was found. In conclusion, we demonstrated, to our knowledge for the first time, that exercise-induced release of PGI2 in young healthy men correlates with VO2max, suggesting that vascular capacity to release PGI2 in response to physical exercise represents an important factor characterizing exercise tolerance. Moreover, we postulate that the impairment of exercise-induced release of PGI2 leads to the increased cardiovascular hazard of vigorous exercise., J. A. Zoladz ... [et al.]., and Obsahuje seznam literatury

Language:

English

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Physiological research | 2009 Volume:58 | Number:2

Harvested from:

CDK

Metadata only:

false