Abstract：
:The electromyographic (EMG) activity of seven muscles of the trunk and lower extremity in five male masters level ski racers during a slalom turn in both alpine skiing and in-line skating was recorded using a telemetry system. Measurements were made on separate testing days using slopes commonly used in each activity (24 slope alpine skiing, 5 in-line skating). Qualitative video recorded at 60 Hz was analyzed to partition the turning cycle in both slalom skiing and in-line skating into initiation and turning phases. The EMG data from each turning cycle were normalized to standard isometric contractions (SIC's) for each muscle in order to quantitatively compare the amplitude characteristics of each phase of the turning cycle in both slalom skiing and in-line skating. The turning phase of in-line skating was found to be significantly longer (55%) than in slalom skiing, most likely due to significantly lower subject velocities recorded during in-line skating (8.5 m/s vs 10.2 m/s). All muscles were active at moderate to high levels (48-172% of SIC) during each phase of the turning cycle in both slalom skiing and in-line skating. The EMG amplitude characteristics were similar for six of the muscles in both slalom skiing and in-line skating for each of the turning phases. Only the erector spinae displayed significantly higher average and peak amplitudes in slalom skiing for both phases. It is concluded that the muscle activity patterns associated with the slalom turn of in-line skating are similar but notably more quasi-static than in slalom skiing.
journal_name
Int J Sports Medjournal_title
International journal of sports medicineauthors
Zeglinksi CM,Swanson SC,Self BP,Greenwald RMdoi
10.1055/s-2007-971943subject
Has Abstractpub_date
1998-10-01 00:00:00pages
447-54issue
7eissn
0172-4622issn
1439-3964journal_volume
19pub_type
杂志文章,评审abstract：:To identify the risk factors of injuries in handball, 221 players were followed during one indoor season. The injury incidence was 4.6/1000 playing hours and 11.4/1000 game hours. The upper extremity was involved in 41% of the injuries including 21% finger sprains. Ankle sprains were the most common injury (33%), and ...
journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1025037
更新日期：1988-10-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
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更新日期：2019-09-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-1021079
更新日期：1994-10-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
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journal_title：International journal of sports medicine
pub_type： 杂志文章
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更新日期：2016-05-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章
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journal_title：International journal of sports medicine
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pub_type： 杂志文章,随机对照试验
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更新日期：2013-11-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 临床试验,杂志文章
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更新日期：2005-05-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
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更新日期：1987-03-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章,评审
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更新日期：1998-04-01 00:00:00
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更新日期：2014-12-01 00:00:00
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pub_type： 杂志文章
doi：10.1055/s-2007-1024838
更新日期：1990-12-01 00:00:00
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更新日期：2010-12-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2007-972680
更新日期：1997-10-01 00:00:00
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journal_title：International journal of sports medicine
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更新日期：1989-10-01 00:00:00
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journal_title：International journal of sports medicine
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pub_type： 临床试验,杂志文章
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更新日期：2008-12-01 00:00:00
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更新日期：2005-04-01 00:00:00
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pub_type： 杂志文章
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更新日期：2013-11-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
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更新日期：1984-10-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章,随机对照试验
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更新日期：2011-09-01 00:00:00
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pub_type： 杂志文章
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更新日期：2015-06-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
doi：10.1055/s-2008-1026031
更新日期：1983-08-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章
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更新日期：2004-11-01 00:00:00
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journal_title：International journal of sports medicine
pub_type： 杂志文章,随机对照试验
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