A5005152093- Sports Performance and Training
- Muscle metabolism and nutrition
- Cardiovascular and exercise physiology
- Exercise and Physiological Responses
- Pharmacology and Obesity Treatment
- Sport Psychology and Performance
- Sports injuries and prevention
- Chronic Obstructive Pulmonary Disease (COPD) Research
- Genetics and Physical Performance
- Cardiovascular Effects of Exercise
- Meat and Animal Product Quality
- Physical Activity and Health
- Coffee research and impacts
- Thyroid Disorders and Treatments
- Innovative Human-Technology Interaction
- Heart Rate Variability and Autonomic Control
- Diabetes, Cardiovascular Risks, and Lipoproteins
- Pulmonary Hypertension Research and Treatments
- Protein Hydrolysis and Bioactive Peptides
- Sports Dynamics and Biomechanics
- Behavioral Health and Interventions
- Cardiovascular Function and Risk Factors
- Systemic Sclerosis and Related Diseases
- Cardiac Imaging and Diagnostics
- Diversity and Impact of Dance
Chapman University
2025
German Sport University Cologne
1987-2007
University of Minnesota
1972
Universitätskinderklinik
1952
Goethe University Frankfurt
1952
The aim of this study was to assess the effect recovery duration in intermittent training drills on metabolism and coordination sport games. Ten nationally ranked male tennis players (age 25.3+/-3.7 years, height 1.83+/-0.8 m, body mass 77.8+/-7.7 kg; mean +/- sx) participated a passing-shot drill (baseline sprint with subsequent passing shot) that aimed improve both starting speed stroke quality (speed precision). Time pressure for preparation individually adjusted by ball-machine...
The potential of exercise-induced changes in peripheral amino acids to alter blood prolactin levels through a seratonergic system modification was investigated 8 male athletes. In two trials, subjects (N = 8) exercised on cycle ergometer for 5 hr. intensity exercise corresponded 55% VO 2 max (T 55 ) or 75% 75 respectively. each trial, subject received 25-g energy bar (111 kcal) every 60 min, as well 300 ml 6% carbohydrate solution (90 30 min duration. Plasma glucose and insulin declined (p...
It has been hypothesized that fatigue and prolactin (PRL) changes during endurance exercise are influenced by serotonin synthesis, in turn, release. Such a change is thought to occur through an increase blood free tryptophan (TRP) concomitant decrease those large neutral amino acids (LNAA) which compete with TRP for entry into the brain. For further investigation, 10 healthy athletes were randomly subjected three test units (TU), each consisting of treadmill run 90 min. The speed was...
OBJECTIVE: To investigate the short term effects of tennis training on lipid metabolism and to find out if a typical programme has positive longitudinal cardiovascular risk factors in recreational players. METHODS: The experimental design consisted an exercise study subsequent study. In metabolic two hour technically orientated (TT) session running intensive (RIT) were investigated 16 players (eight men: 46 (SD 7) years, 177 (6) cm, 81 (10) kg; eight women: 44 (5) 165 64 kg). long six week...
To investigate amino acid metabolism during endurance exercise as well its influence on plasma prolactin (PRL) we subjected eight nationally ranked tennis players (mean(s.d.) age 25.6(2.8) years, mean(s.d.) weight 83.9(5.7) kg, height 184.4(4.6) cm) to 4h of continuous tournament tennis. Venous and capillary blood samples were taken before after the exercise. Amino acids measured by HPLC-fluorescence detection o-phthalaldehyde derivatives; nonesterified fatty (NEFA), ammonia, total protein,...
SummaryWhile changes in systemic flow produced by Valsalva-like maneuvers dogs closely resembled those of Valsalva performed humans, arterial pressure fell much more the as pulmonary prssure—flow ratio rose markedly (+ 1100%). Right and left heart outputs decreased to 20 30% control, respectively, while blood volume 140 ± 45 ml or approximately 40% maneuver. The course atrial pressures, rapid fall right output development acute insufficiency suggest a hitherto unreported site obstruction...
Effects of carbohydrate (CHO) and caffeine (CAF) in amounts typically found sports-drinks on plasma metabolites, neuroendocrine responses performance tennis were investigated 8 skilled players during a 4 h match. In 3 trials ingested placebo (T I), CAF II) or CHO III) drink court changeover. Total intake consisted 2.81 fluid, supplemented with 243 g 364 mg CAF, respectively. Self-perceived "drive/motivation" post-exercise hitting accuracy evaluated. Plasma free fatty acids increments lower...
Worldwide, there are only a few descriptions and results in the literature of field experiments arranged under scientifically-accepted conditions that helpful clarifying meaningful questions from world tennis practice. This applies particular to …