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7. Impact of Vascular Function on Maximum Power Output in Elite Handball Athletes

Author

Bauer, Pascal, Kraushaar, Lutz, Most, Astrid, Hölscher, Sophie, Tajmiri- Gondai, Shahin, Dörr, Oliver, Troidl, Christian, Bauer, Timm, Nef, Holger, Hamm, Christian W., and Keller, Till

Abstract

Purpose: To evaluate vascular function and its relationship to cardiorespiratory fitness in professional handball athletes. Method: We examined 30 male professional handball athletes (age 27 [plus or minus] 4 y) and 10 male sedentary controls (age 26[plus or minus] 5 y) at rest. The workup included exercise testing via ergometry. To assess vascular function, a validated electronic model of the arterial tree (vasc assist 2 [Registered Trade Mark]) was used. It replicates noninvasively acquired pulse pressure waves by modulating the relevant functional parameters of compliance, resistance, inertia, pressure, and flow. The maximum oxygen uptake (VO2max) was estimated using the validated heart rate ratio method. Results: Athletes had a significantly lower systolic and diastolic central blood pressure ([mini c]BP) compared to controls (102[plus or minus]9/60[plus or minus] 9 vs. 110[plus or minus]8/74[plus or minus]9 mmHg, p[less than] 0.01), whereas aortic pulse wave velocity (PWV) (6.2[plus or minus]0.8 vs. 6.3[plus or minus] 0.5 m/s, p = 0.45) and augmentation index at a heart rate of 75 (Aix[at]75) (-4[plus or minus]12 vs. -13[plus or minus]16%, p = 0.06) were not different. Resistance index (R) (15.9[plus or minus]4.4 vs. 10.6[plus or minus]0.6, p = 0.001) and maximum power output (MPO) (3.55 [plus or minus]0.54 vs. 2.46[plus or minus]0.55 Watt/kg, p[less than] 0.001) were significantly higher in athletes compared to controls. We found no relevant correlation between MPO, resting heart rate, PWV, Aix[at]75, and cBP. A higher VO2max (p = 0.02) and a lower R (p[less than]0.01) were significant predictors of a higher MPO in athletes. Conclusion: R had an independent and strong correlation to MPO in athletes, which might help to disentangle the contribution of aerobic capacity and arterial function to physical power.

Published
2019
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9. Association of cardiorespiratory fitness level with vascular function and subclinical atherosclerosis in the elderly

Author

Größer, Vincent, primary, Weyh, Christopher, additional, Böttrich, Tim, additional, Frech, Torsten, additional, Nolte, Svenja, additional, Sommer, Natascha, additional, Huber, Magdalena, additional, Eder, Klaus, additional, Dörr, Oliver, additional, Hoelscher, Sophie, additional, Weber, Rebecca, additional, Akdogan, Ebru, additional, Nef, Holger, additional, Most, Astrid, additional, Hamm, Christian W., additional, Krüger, Karsten, additional, and Bauer, Pascal, additional

Published
2023
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10. Association of central blood pressure with an exaggerated blood pressure response to exercise among elite athletes

Author

Most, Astrid, primary, Kraushaar, Lutz, additional, Dörr, Oliver, additional, Keranov, Stanislav, additional, Hoelscher, Sophie, additional, Weber, Rebecca, additional, Akdogan, Ebru, additional, Groesser, Vincent, additional, Husain-Syed, Faeq, additional, Nef, Holger, additional, Hamm, Christian W., additional, and Bauer, Pascal, additional

Published
2023
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40. High prevalence of vitamin D insufficiency in professional handball athletes.

Author

Bauer, Pascal, Henni, Samir, Dörr, Oliver, Bauer, Timm, Hamm, Christian W., and Most, Astrid

Abstract

Objectives: Vitamin D affects multiple body functions through the regulation of gene expression. In sports medicine, its influence on musculoskeletal health and performance is of particular interest. Vitamin D insufficiency might decrease athletic performance and increase the risk of musculoskeletal injuries. Several studies have demonstrated vitamin D deficiency in professional athletes; however, the prevalence of vitamin D insufficiency in professional handball players is yet unknown. Methods: The study was planned as a prospective, non-interventional study. We examined 70 male elite handball athletes (first league) in a pre-competition medical assessment in July. Age, height, weight, body mass index, 25-OH vitamin D, calcium, and parathyroid hormone were evaluated, and a sun exposure score was calculated. Players were then divided into two groups of vitamin D levels: insufficient (<30 ng/mL) and sufficient (≥30 ng/mL). Results: The mean 25-OH vitamin D level of the 70 players was 33.5 ± 10.9 ng/mL (median 32.2, IQR 26.5-38.9 ng/mL). Thirty-nine (55.7%) had sufficient and 31 (44.3%) insufficient levels. Athletes with sufficient vitamin D levels had significantly lower parathyroid hormone levels than athletes with insufficiency (24.9 ± 12.1 vs. 33.5 ± 15.1 ng/mL, p = 0.02). All other parameters evaluated demonstrated no significant difference between the two groups. Conclusion: Vitamin D insufficiency is a common finding in professional handball athletes even in summer, which might negatively affect physical performance. Furthermore, it might lead to an increased risk of musculoskeletal injuries and infections. This should be evaluated in further studies. [ABSTRACT FROM AUTHOR]

Published
2019
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41. Overlapping implantation of bioresorbable novolimus-eluting scaffolds: an observational optical coherence tomography study

Author

Blachutzik, Florian, primary, Boeder, Niklas, additional, Wiebe, Jens, additional, Mattesini, Alessio, additional, Dörr, Oliver, additional, Most, Astrid, additional, Bauer, Timm, additional, Tröbs, Monique, additional, Röther, Jens, additional, Schlundt, Christian, additional, Achenbach, Stephan, additional, Hamm, Christian, additional, and Nef, Holger, additional

Published
2016
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42. Post-dilatation after implantation of bioresorbable everolimus- and novolimus-eluting scaffolds: an observational optical coherence tomography study of acute mechanical effects

Author

Blachutzik, Florian, primary, Boeder, Niklas, additional, Wiebe, Jens, additional, Mattesini, Alessio, additional, Dörr, Oliver, additional, Most, Astrid, additional, Bauer, Timm, additional, Röther, Jens, additional, Tröbs, Monique, additional, Schlundt, Christian, additional, Achenbach, Stephan, additional, Hamm, Christian W., additional, and Nef, Holger M., additional

Published
2016
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45. Workload-indexed blood pressure response to a maximum exercise test among professional indoor athletes

Author

Bauer, Pascal, Kraushaar, Lutz, Dörr, Oliver, Nef, Holger, Hamm, Christian W, and Most, Astrid

Abstract

Background Exercise testing is performed regularly in professional athletes. However, the blood pressure response (BPR) to exercise is rarely investigated in this cohort, and normative upper thresholds are lacking. Recently, a workload-indexed BPR (increase in systolic blood pressure per increase in metabolic equivalent of task (SBP/MET slope)) was evaluated in a general population and was compared with mortality. We sought to evaluate the SBP/MET slope in professional athletes and compare it with performance.Design This was a cross-sectional study.Methods A total of 142 male professional indoor athletes (age 26 ± 5 years) were examined. Blood pressure was measured at rest and during a standardized, graded cycle ergometer test. We assessed the BPR during exercise, the workload, and the metabolic equivalent of task (MET). Athletes were divided into groups according to their SBP/MET slope quartiles (I <4.3; II 4.3–6.2; III >6.2–9; IV >9 mmHg/MET) and compared regarding systolic BP (sBP) and workload achieved.Results Athletes in group I (n= 42) had the lowest maximum sBP (180 ± 13 mmHg) but achieved the highest relative workload (4.2 ± 1 W/kg). With increasing SBP/MET slope, the maximum sBP increased (II (n= 56): 195 ± 15 mmHg; III (n= 44): 216 ± 16 mmHg) and the workload achieved decreased (II: 3.9 ± 0.7 W/kg; III: 3.3 ± 0.5 W/kg). The differences in sBP between these groups were significant (p< 0.001). None of the athletes were assigned to group IV (>9 mmHg/MET).Conclusion Athletes in the lowest SBP/MET slope quartile displayed the lowest maximum sBP but achieved a higher workload than athletes classified into the other SBP/MET slope groups. This simple, novel metric might help to distinguish a normal from an exaggerated BPR to exercise, to identify athletes at risk of developing hypertension.

Published
2024
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46. Short-term outcome of patients with ST-segment elevation myocardial infarction (STEMI) treated with an everolimus-eluting bioresorbable vascular scaffold

Author

Wiebe, Jens, primary, Möllmann, Helge, additional, Most, Astrid, additional, Dörr, Oliver, additional, Weipert, Kay, additional, Rixe, Johannes, additional, Liebetrau, Christoph, additional, Elsässer, Albrecht, additional, Achenbach, Stephan, additional, Hamm, Christian, additional, and Nef, Holger, additional

Published
2013
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47. Activation of Ca2+-activated potassium channels is involved in lysophosphatidylcholine-induced monocyte adhesion to endothelial cells

Author

Erdogan, Ali, primary, Schaefer, Martina Barbara, additional, Kuhlmann, Christoph Ruediger Wolfram, additional, Most, Astrid, additional, Hartmann, Marc, additional, Mayer, Konstantin, additional, Renner, Fabrice Christoph, additional, Schaefer, Claudia, additional, Abdallah, Yaser, additional, Hoelschermann, Hans, additional, and Schaefer, Christian Alexander, additional

Published
2007
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50. Dose-Dependent Activation of Ca2+-Activated K+ Channels by Ethanol Contributes to Improved Endothelial Cell Functions

Author

Kuhlmann, Christoph R. W., primary, Li, Fang, additional, L??dders, D??rte W., additional, Schaefer, Christian A., additional, Most, Astrid K., additional, Backenk??hler, Ulrich, additional, Neumann, Thomas, additional, Tillmanns, Harald, additional, Waldecker, Bernd, additional, Erdogan, Ali, additional, and Wiecha, Johannes, additional

Published
2004
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