Monitoring high-intensity endurance training using neuromuscular excitability to recognize overtraining
Deutscher übersetzter Titel: | Überwachung von hochintensivem Ausdauertraining mit Hilfe der Bestimmung der neuromuskulären Erregbarkeit zur Erkennung von Übertraining |
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Autor: | Lehmann, M.; Baur, S.; Netzer, N.; Gastmann, U. |
Erschienen in: | European journal of applied physiology |
Veröffentlicht: | 76 (1997), 2, S. 187-191, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource Elektronische Ressource (online) |
Sprache: | Englisch |
ISSN: | 1439-6319, 0301-5548 |
DOI: | 10.1007/s004210050233 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU199708206654 |
Quelle: | BISp |
Abstract des Autors
The minimal rectangular current pulse that produces a single contraction of reference muscles at different pulse durations has been recommended as a marker of the neuromuscular excitability (NME) of skeletal muscles. NME is improved in well-trained, nonfatigued endurance athletes and deteriorates after prolonged heavy exercise and high-volume overtraining. The hypothesis was tested that a deterioration in NME also indicates an early stage in the overtraining process during high-intensity endurance training. Six subjects participated for 40-60 min per day in a 6-week, 6-days-per-week, intensive, steady-state and interval training program using a cycle ergometer. Training was stopped each day on volitional exhaustion. On day 7 of each week training was of low intensity for about 30-40 min. Submaximum and maximum power output were significantly increased after 3 weeks, but there was no further improvement, rather a deteroration after week 6 compared to week 3. Even after 2 weeks of regeneration no supercompensation was evident, rather a decrease in maximum power output. NME was slightly improved after 3 weeks, but deteriorated after 6 weeks, and was again normalized after 2 weeks of regeneration. The discrepancy between normalization of NME and still-deteriorated performance ability after 2 weeks of regeneration reflects additional significant, and probably central mechanisms that explain persistent performance incompetence. Deterioration in NME may indicate an early stage in the overtraining process during high-volume as well as high-intensity endurance overtraining, but normalization does not necessarily indicate sufficient regeneration. Verf.-Referat