Abstract：
:The purpose of the present study was to accurately and reliably analyse the nature of movement undertaken by National Rugby League (NRL) referees during matches played in the 2000 season. The movements of NRL referees (n=5) were analysed from videotape footage of ten games. The researchers assigned each movement to one of six defined categories (stationary, walking forwards, jogging forwards, sprinting, sideways, and backwards), and recorded number of repetitions, movement durations, and distances covered during each specific movement category. Distance was estimated using on-field markings as known points. Mean total distance per game was 6.7 km +/- 0.4 km (mean +/- standard deviation), and was made up of approximately 940 movements per game. The data showed 87% of distance was made up of a cyclic activity comprising jogging forwards, then backwards at mean running speeds of 7.2 km x h(-1) and 10.8 km x h(-1) respectively (made up of 9s bursts on average, each separated by 3s breaks). However, this cyclic activity accounted for only 47% of time, as referees were stationary 41% of time. Play was continuous for 90s +/- 71s at each phase of play, and was followed by rest of 45s +/- 36s throughout matches (work to rest ratio was 2:1). These findings suggest Rugby League refereeing is a highly intermittent activity and therefore training and fitness assessments should reflect these specific demands experienced during a game.
journal_name
J Sci Med Sportjournal_title
Journal of science and medicine in sportauthors
Kay B,Gill NDdoi
10.1016/s1440-2440(03)80027-0keywords:
subject
Has Abstractpub_date
2003-09-01 00:00:00pages
339-42issue
3eissn
1440-2440issn
1878-1861pii
S1440-2440(03)80027-0journal_volume
6pub_type
杂志文章abstract：:This study evaluated changes in range of motion (ROM) in competitive male and female junior tennis players participating in a specific conditioning program over a two-year period. Subjects were also compared to an age and sex-matched control group of players not performing the exercises. Fifty-one tennis players, 29 m...
journal_title：Journal of science and medicine in sport
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journal_title：Journal of science and medicine in sport
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,评审
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更新日期：2014-05-01 00:00:00
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journal_title：Journal of science and medicine in sport
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journal_title：Journal of science and medicine in sport
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2014.05.004
更新日期：2015-07-01 00:00:00
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journal_title：Journal of science and medicine in sport
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doi：10.1016/j.jsams.2007.08.002
更新日期：2008-11-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2014.01.007
更新日期：2015-03-01 00:00:00
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更新日期：2018-09-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2018.10.007
更新日期：2019-08-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
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更新日期：2004-12-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,评审
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更新日期：2020-12-01 00:00:00
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更新日期：2007-10-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2016.03.003
更新日期：2016-12-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,评审
doi：10.1016/j.jsams.2012.11.001
更新日期：2013-07-01 00:00:00
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journal_title：Journal of science and medicine in sport
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更新日期：2011-07-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章,meta分析,评审
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更新日期：2017-10-01 00:00:00
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更新日期：2019-01-01 00:00:00
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更新日期：2017-02-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
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更新日期：2019-08-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
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更新日期：2019-02-01 00:00:00
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更新日期：2019-07-01 00:00:00
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journal_title：Journal of science and medicine in sport
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更新日期：2020-11-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
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更新日期：2020-11-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
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更新日期：2004-03-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
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更新日期：2014-01-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
doi：10.1016/j.jsams.2008.09.004
更新日期：2010-01-01 00:00:00
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journal_title：Journal of science and medicine in sport
pub_type： 杂志文章
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更新日期：2020-05-17 00:00:00
