Abstract：
:This study aimed at evaluating whether addition of extensive upper body training in well-trained cross country skiers induces an adaptation of the triceps brachii (TB) muscle and whether this affects performance. Muscle biopsies were obtained from TB muscle in six male elite cross country skiers before and after 20 weeks of increased upper body training. The cross-sectional area of type I and IIA fibers increased by 11.3% and 24.0%, respectively, and so did the number of capillaries per fiber (2.3-3.2) (all P<0.05). SDS-polyacrylamide electrophoresis revealed in single fibers that the number of fibers expressing myosin heavy chain (MHC) type I isoform decreased from 68.7% to 60.9% (P<0.05), MHC I/IIA isoform was unaltered, while MHC IIA fibers increased from 21.6% to 35.7% and the 4.8% MHC IIA/IIX disappeared with the training (both P<0.05). Citrate synthase and 3-hydroxyacyl coenzyme A dehydrogenase activities increased by 23.3% and 15.4%, respectively, and double poling 10 km time-trial by 10.4% (all P<0.05). The values for TB are similar to what has been demonstrated for leg muscles after exercise training. The subjects who demonstrated the largest improvement in performance exhibited the largest muscle adaptation, which, in turn, was related to the pre-maximal oxygen uptake.
journal_name
Scand J Med Sci Sportsjournal_title
Scandinavian journal of medicine & science in sportsauthors
Terzis G,Stattin B,Holmberg HCdoi
10.1111/j.1600-0838.2005.00463.xsubject
Has Abstractpub_date
2006-04-01 00:00:00pages
121-6issue
2eissn
0905-7188issn
1600-0838pii
SMS463journal_volume
16pub_type
杂志文章abstract：:The purpose of this study was to characterize the effect of a 2-week overload period immediately followed by a 1-week taper period on different cognitive processes including executive and nonexecutive functions, and related heart rate variability. Eleven male endurance athletes increased their usual training volume by...
journal_title：Scandinavian journal of medicine & science in sports
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journal_title：Scandinavian journal of medicine & science in sports
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journal_title：Scandinavian journal of medicine & science in sports
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journal_title：Scandinavian journal of medicine & science in sports
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pub_type： 杂志文章
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journal_title：Scandinavian journal of medicine & science in sports
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journal_title：Scandinavian journal of medicine & science in sports
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journal_title：Scandinavian journal of medicine & science in sports
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doi：
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journal_title：Scandinavian journal of medicine & science in sports
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journal_title：Scandinavian journal of medicine & science in sports
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journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/j.1600-0838.1997.tb00146.x
更新日期：1997-08-01 00:00:00
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journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章,随机对照试验
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journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/j.1600-0838.1996.tb00066.x
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journal_title：Scandinavian journal of medicine & science in sports
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更新日期：1998-12-01 00:00:00
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journal_title：Scandinavian journal of medicine & science in sports
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doi：10.1111/j.1600-0838.2010.01229.x
更新日期：2011-12-01 00:00:00
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journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章,评审
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更新日期：2000-12-01 00:00:00
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journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
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更新日期：2001-04-01 00:00:00
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journal_title：Scandinavian journal of medicine & science in sports
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更新日期：1999-02-01 00:00:00
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journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章
doi：10.1111/j.1600-0838.2005.00442.x
更新日期：2006-02-01 00:00:00
abstract：:The aim of this study was to evaluate whether electrical muscle stimulation (EMS) on dominant wrist flexors causes an increase in the muscle strength of the contralateral wrist extensors. Twenty-three healthy, young, adult men were included in this prospective, double-blind, controlled study. Participants were randoml...
journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章,随机对照试验
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更新日期：2011-12-01 00:00:00
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journal_title：Scandinavian journal of medicine & science in sports
pub_type： 杂志文章,随机对照试验
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更新日期：2017-12-01 00:00:00
