W Kindermann1, V Lehmann, M Herrmann, T Loch. 1. Institut für Sport- und Präventivmedizin, Universität des Saarlandes, Campus, Gebäude B8.2, 66123 Saarbrücken, Deutschland. w.kindermann@mx.uni-saarland.de
Abstract
BACKGROUND: Sports and in particular cycling are assumed to influence PSA in serum. Controversial scientific results were the motivation to examine the influence of a standardized test on a cycling ergometer and a treadmill on PSA concentrations in elderly men with elevated PSA levels and a benign prostate hyperplasia. MATERIAL AND METHODS: A total of 21 male volunteers (aged 61 ± 5 years, tPSA 7.7 ± 3.0 ng/ml and benign prostate hyperplasia with a prostate volume of 54 ± 18 ml) performed a 1 h cycling test on a cycling ergometer. A subgroup of 15 volunteers also performed a 1 h test on a treadmill. Blood samples were drawn before and several times after the cycling stress test up to 7 days afterwards (up to 120 min after the test on the treadmill) to determine total PSA (tPSA), complexed PSA (cPSA) and free PSA (fPSA). RESULTS: The average increase in tPSA of 1.9 ± 1.7 ng/ml (25%) after the cycling exercise test was significant. After the treadmill exercise the PSA increase was not as high, but with 1.0 ± 1.0 ng/ml (12%) was also significant. On average the levels of PSA returned to the basic level 48 h after the cycling test, but in individual cases it took longer. fPSA showed the most noticeable increase after cycling with 92% on average. There was no correlation between increase in PSA and prostate volume. CONCLUSIONS: Men should abstain from physical exercise, especially from cycling for several days and at least for 24 h before PSA measurements are carried out. This applies to patients with elevated PSA levels (>4 ng/ml) when a PSA follow-up is being carried out.
BACKGROUND: Sports and in particular cycling are assumed to influence PSA in serum. Controversial scientific results were the motivation to examine the influence of a standardized test on a cycling ergometer and a treadmill on PSA concentrations in elderly men with elevated PSA levels and a benign prostate hyperplasia. MATERIAL AND METHODS: A total of 21 male volunteers (aged 61 ± 5 years, tPSA 7.7 ± 3.0 ng/ml and benign prostate hyperplasia with a prostate volume of 54 ± 18 ml) performed a 1 h cycling test on a cycling ergometer. A subgroup of 15 volunteers also performed a 1 h test on a treadmill. Blood samples were drawn before and several times after the cycling stress test up to 7 days afterwards (up to 120 min after the test on the treadmill) to determine total PSA (tPSA), complexed PSA (cPSA) and free PSA (fPSA). RESULTS: The average increase in tPSA of 1.9 ± 1.7 ng/ml (25%) after the cycling exercise test was significant. After the treadmill exercise the PSA increase was not as high, but with 1.0 ± 1.0 ng/ml (12%) was also significant. On average the levels of PSA returned to the basic level 48 h after the cycling test, but in individual cases it took longer. fPSA showed the most noticeable increase after cycling with 92% on average. There was no correlation between increase in PSA and prostate volume. CONCLUSIONS:Men should abstain from physical exercise, especially from cycling for several days and at least for 24 h before PSA measurements are carried out. This applies to patients with elevated PSA levels (>4 ng/ml) when a PSA follow-up is being carried out.
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