Effect of training on aerobic capacity of female athletes differing in muscle fibre composition
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CONTRIBUTORS:
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JOURNAL:
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YEAR:
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1983
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PUB TYPE:
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Journal Article
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SUBJECT(S):
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CROSS-COUNTRY-SKIING; TRAINING; ENDURANCE; OXYGEN-CONSUMPTION; MUSCLE; FIBRE; ANAEROBIC-THRESHOLD; WOMAN; ELITE-ATHLETE
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DISCIPLINE:
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No discipline assigned
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HTTP:
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LANGUAGE:
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English
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PUB ID:
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103-366-201
(Last edited on
2002/02/27 18:45:05 US/Mountain)
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SPONSOR(S):
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ABSTRACT:
The effects of endurance training were studied in two groups of female cross-country skiers who differed in muscle fibre composition. The ST-group had 56-76 percent slow twitch (ST) muscle fibres and the FT-group 40-55 percent ST fibres in the m. vastus lateralis. During a four-month period, the subjects trained on the average 81 km per week. The intensive training (heart rate 0-15 beats per min below maximum) average 8.5 km per week. The differences in training between the two groups were not significant. The ST-group significantly increased their cycling maximum oxygen uptake and the anaerobic threshold during the training period whereas no significant changes were observed in the FT-group. Both the ST-group and the FT-group increased their skiwalking maximum oxygen uptake (S max), on average 8.7 percent and 3.8 percent respectively. In the ST-group, no significant correlations were found between training and the physiological parameters. In the FT-group, the amount of the total training and the intensive training correlated significantly with post-training S max, C max, AT and the change in S max. The subjects possessing a higher percentage of ST fibres seemed to be able to increase their aerobic capacity more than those with a lower proportion of ST fibres. This latter group was probably forced to use fast twitch fibres during their training.
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