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  • Title: [Muscle structure and aerobic performance capacity in recruit training school].
    Author: Hofer P, Hoppeler H, Kayar SR, Howald H.
    Journal: Schweiz Z Sportmed; 1990 Apr; 38(1):11-6. PubMed ID: 2112265.
    Abstract:
    The aerobic performance capacity (VO2 max) and muscle ultrastructural composition was analyzed in 18 subjects undergoing basic training in the Swiss army. Three groups were selected based on their sports activity. Group S contained subjects that had a previous systematic background in sports activities and trained regularly at least three times per week. A second group consisted of subjects that had no previous training and were subjected to an additional, individually adjusted endurance exercise (three times per week) for the first 8 weeks of their service period (group T). The control group (C) had no previous training and followed only the regular military duties. VO2 max was found to be significantly higher in group S at the beginning of the military service. However, VO2 max did not change significantly during the service period in any of the groups, Muscle mitochondria showed a significant change (+19%) only in group T. Heart rate recordings indicated that despite "strenuous" military activity, heart rates rarely reached levels sufficient for an increase in aerobic performance capacity.
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