Association of 25-hydroxy vitamin D level with the blood pressure response to a maximum exercise test among professional indoor athletes

摘要

Purpose Low vitamin D levels have been associated with elevated blood pressure (BP) in the general population. However, whether there is an association of vitamin D insufficiency with BP changes during maximum exercise in athletes is currently unclear. Methods A total of 120 male professional indoor athletes (age 26 +/- 5 years) were examined. BP was measured at rest and during a graded cycling test. We assessed the BP response (BPR) during maximum exercise and the respective load. BP and BPR (peak-baseline BP) were analysed with respect to 25-OH vitamin D levels, with levels < 30 ng/mL defining vitamin D insufficiency. Results 35 athletes were classified as being vitamin D insufficient. BP was not different between sufficient and insufficient vitamin D groups (122 +/- 10/75 +/- 7 vs. 120 +/- 12/77 +/- 9 mmHg). At maximum exercise, however, systolic BP (198 +/- 17 vs. 189 +/- 19,p = 0.026) and the pulse pressure (118 +/- 18 vs. 109 +/- 21 mmHg,p = 0.021) were higher in the sufficient group; the BPR was not different between groups (76 +/- 20/5 +/- 6 vs. 69 +/- 22/3 +/- 6 mmHg,p = 0.103). Athletes with sufficient levels had a higher maximum power output (3.99 +/- 0.82 vs. 3.58 +/- 0.78 W/kg,p = 0.015) and achieved higher workloads (367 +/- 78 vs. 333 +/- 80 W,p = 0.003). The workload-adjusted BPR (maximum systolic BP/MPO) was not different between athletes with sufficient and insufficient vitamin D levels (51 +/- 10 vs. 56 +/- 14 mmHg x kg/W,p = 0.079). Conclusion Athletes with sufficient vitamin D achieved a higher maximum systolic BP and a higher maximum power output. The workload-adjusted BPR was not different between groups, which suggests that this finding reflects a better performance of athletes with sufficient vitamin D.