Publications
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The work rate corresponding to ventilatory threshold during steady-state and ramp exercise." Int J Sports Physiol Perform. 2006;1(3):222-32.
"Volume vs. intensity in the training of competitive swimmers." Int J Sports Med. 2008;29(11):906-12.
"A video-based analysis of situations bearing the risk of respiratory disease transmission during football matches ." Sci Rep. 2022;12(1):3034.
"Ventilatory inefficiency in major depressive disorder: a potential adjunct for cardiac risk stratification in depressive disorders?" Prog. Neuropsychopharmacol. Biol. Psychiatry. 2010;34(6):882-7.
"Vaccination in elite athletes." Sports Med. 2014;44(10):1361-76.
"The use of the Panic and Agoraphobia Scale (P & A) in a controlled clinical trial." Pharmacopsychiatry. 2000;33(5):174-81.
"Transferability of workload measurements between three different types of ergometer." Eur. J. Appl. Physiol.. 2000;82(3):245-9.
"Time course of changes in endurance capacity: a 1-yr training study." Med Sci Sports Exerc. 2009;41(5):1130-7.
"Therapeutic impact of exercise on psychiatric diseases: guidelines for exercise testing and prescription." Sports Med. 2000;30(4):269-79.
"Suggested new upper limit of physiologic cardiac hypertrophy determined in Japanese ultramarathon runners must be interpreted cautiously." J. Am. Coll. Cardiol.. 2004;44(2):470-1; author reply 471.
"Strength training adaptations after cold-water immersion." J Strength Cond Res. 2014;28(9):2628-33.
"Straight sprinting is the most frequent action in goal situations in professional football." J Sports Sci. 2012;30(7):625-31.
"Sleep and athletic performance: the effects of sleep loss on exercise performance, and physiological and cognitive responses to exercise." Sports Med. 2015;45(2):161-86.
"Seasonal changes in stress indicators in high level football." Int J Sports Med. 2011;32(4):259-65.
"Running exercise of different duration and intensity: effect on endothelial progenitor cells in healthy subjects." Eur J Cardiovasc Prev Rehabil. 2005;12(4):407-14.
"Running 8000 m fast or slow: Are there differences in energy cost and fat metabolism?" Med Sci Sports Exerc. 2005;37(10):1789-93.
"Routine blood parameters in elite soccer players." Int J Sports Med. 2011;32(11):875-81.
"Risk factors for injuries in elite female soccer players." Br J Sports Med. 2006;40(9):785-90.
"Return to play decisions - a highly important albeit unsolved issue." J Sports Sci. 2014;32(13):1205.
"Return to play after acute infectious disease in football players." J Sports Sci. 2014;32(13):1237-42.
"Resting ECG findings in elite football players." J Sports Sci. 2013;31(13):1475-80.
"Reproducibility of pacing profiles in elite swimmers." Int J Sports Physiol Perform. 2014;9(2):217-25.
"Reproducibility and clinical significance of exercise-induced increases in cardiac troponins and N-terminal pro brain natriuretic peptide in endurance athletes." Eur J Cardiovasc Prev Rehabil. 2006;13(3):388-97.
"Repeated monitoring of blood parameters for evaluating strain and overload in elite football players: is it justified?" J Sports Sci. 2014;32(13):1328-31.
"Reliability of gas exchange measurements from two different spiroergometry systems." Int J Sports Med. 2001;22(8):593-7.
"Recovery training in cyclists: ergometric, hormonal and psychometric findings." Scand J Med Sci Sports. 2009;19(3):433-41.
"Precompetition cardiac assessment of football players participating in the 2006 FIFA World Cup Germany." Clin J Sport Med. 2009;19(4):322-5.
"Polymorphisms in the IGF1 signalling pathway including the myostatin gene are associated with left ventricular mass in male athletes." Br J Sports Med. 2011;45(1):36-41.
"Pitfalls in the differentiation between athlete's heart and hypertrophic cardiomyopathy." Clin Res Cardiol. 2009;98(7):465-6; author reply 467-8.
"Physiological characteristics of badminton match play." Eur. J. Appl. Physiol.. 2007;100(4):479-85.
"Physical exercise prevents cellular senescence in circulating leukocytes and in the vessel wall." Circulation. 2009;120(24):2438-47.
"Peak oxygen uptake. Myth and truth about an internationally accepted reference value." Z Kardiol. 2005;94(4):255-64.
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Mobilization and oxidative burst of neutrophils are influenced by carbohydrate supplementation during prolonged cycling in humans." Eur. J. Appl. Physiol.. 2002;87(6):584-7.
"Metabolic profile of 4 h cycling in the field with varying amounts of carbohydrate supply." Eur. J. Appl. Physiol.. 2003;88(4-5):431-7.
"Maximal oxygen uptake during field running does not exceed that measured during treadmill exercise." Eur. J. Appl. Physiol.. 2003;88(4-5):387-9.
"Long-distance mountain biking does not disturb the measurement of total, free or complexed prostate-specific antigen in healthy men." Clin. Chem. Lab. Med.. 2004;42(3):347-9.
"Limited benefit of Fatmax-test to derive training prescriptions." Int J Sports Med. 2014;35(4):280-5.
"Left ventricular dimensions and function in strength athletes. Re: Hartgens F, Cheriex EC, Kuipers H. Prospective echocardiographic assessment of androgenic-anabolic steroids effects on cardiac structure and function in strength athletes. Int J Sports Med." Int J Sports Med. 2004;25(3):241-2; author reply 243-4.
"Is lactic acidosis a cause of exercise induced hyperventilation at the respiratory compensation point?" Br J Sports Med. 2004;38(5):622-5.
"Lactate threshold concepts: how valid are they?" Sports Med. 2009;39(6):469-90.
"Is it helpful to study a commercial multi-nutrient supplement on exercise performance?" Eur. J. Appl. Physiol.. 2008;103(4):487.
"Intensity control in swim training by means of the individual anaerobic threshold." J Strength Cond Res. 2012;26(12):3304-11.
"Injury prevention in male veteran football players - a randomised controlled trial using "FIFA 11+"." J Sports Sci. 2015;33(9):873-81.
"Injury characteristics in the German professional male soccer leagues after a shortened winter break." J Athl Train. 2014;49(6):786-93.
"Injuries in female soccer players: a prospective study in the German national league." Am J Sports Med. 2005;33(11):1694-700.
"Inhaled beta2 agonists and performance in competitive athletes." Br J Sports Med. 2006;40 Suppl 1:i43-7.
"Influence of pacing manipulation on performance of juniors in simulated 400-m swim competition." Int J Sports Physiol Perform. 2014;9(5):817-24.
"Indicators for high physical strain and overload in elite football players." Scand J Med Sci Sports. 2013;23(2):156-63.
"Indications for an ergometry stress test beyond myocardial ischemia." Dtsch. Med. Wochenschr.. 2013;138(48):2479-83.
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