Muscle Bioenergetics in Skiers: Studies Using NMR Spectroscopy
| العنوان: | Muscle Bioenergetics in Skiers: Studies Using NMR Spectroscopy |
|---|---|
| المؤلفون: | A. Rossi, A. Favre-Juvin, Jean-François Payen, J. F. Lebas, D. Laurent, H. Reutenauer, J. Eterradossi |
| المصدر: | International Journal of Sports Medicine. 13:S150-S152 |
| بيانات النشر: | Georg Thieme Verlag KG, 1992. |
| سنة النشر: | 1992 |
| مصطلحات موضوعية: | Adult, medicine.medical_specialty, Magnetic Resonance Spectroscopy, Phosphocreatine, Bioenergetics, Physical Therapy, Sports Therapy and Rehabilitation, chemistry.chemical_compound, Oxygen Consumption, Skiing, Internal medicine, Humans, Medicine, Orthopedics and Sports Medicine, Leg, Physical Education and Training, biology, business.industry, Athletes, Muscles, VO2 max, Phosphorus, Cardiorespiratory fitness, Nuclear magnetic resonance spectroscopy, biology.organism_classification, Control subjects, Biochemistry, chemistry, Homogeneous, Cardiology, Energy Metabolism, business, human activities, Muscle Contraction |
| الوصف: | Sedentary human subjects (n = 6) and two homogeneous groups of athletes, trained for down-hill skiing (n = 5) and cross-country skiing (n = 7), were subjected to cardiorespiratory testing and to evaluation of the bioenergetics of calf muscles by means of Phosphorus Nuclear Magnetic Resonance Spectroscopy. The exercise consisted of successive plantar flexions performed at graded fractions of the maximal voluntary contraction force. It appears from this study that the decrease in phosphocreatine level induced by exercise at 80% of maximal voluntary contraction, was smaller in the muscles of athletes who trained for cross-country skiing, than in the muscles of down-hill skiers and control subjects. Intracellular acidosis was virtually absent in cross-country athletes. The rate of restitution of phosphocreatine, after the exercise, was higher in both groups of skiers, compared to sedentary subjects. The maximal oxygen consumption and the maximal alactic power were higher in athletes than in sedentary subjects. NMR data and mechanical measurements are used in consideration with functional systemic indexes to characterize the capabilities of skiers. |
| تدمد: | 1439-3964 0172-4622 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6bcb85309e3ca47b0df3ed60c873c7b https://doi.org/10.1055/s-2007-1024622 |
| رقم الأكسشن: | edsair.doi.dedup.....a6bcb85309e3ca47b0df3ed60c873c7b |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14393964 01724622 |
|---|