Abstract:
OBJECTIVE:To monitor the seasonal body composition alterations in 18 lightweight rowers (six females, 12 males) across a rowing season incorporating preseason, early competition, competition, and postseason. METHODS:Subject age was 23.1 (SD 4.5) years, height 170.8 (5.6) cm (female, 23.5 (3.5) years, 180.5 (2.7) cm (male). Body weight, fat mass, and fat-free mass (FFM) were assessed using dual energy x ray absorptiometry (DXA-L Lunar) and skinfold techniques. Weight control techniques were documented before major regattas by a questionnaire. RESULTS:Female body weight was reduced from 61.3 (2.9) to 57.0 (1.1) kg (5.9%), while male body weight was reduced from 75.6 (3.1) to 69.8 (1.6) kg (7.8%) preseason to competition season respectively. These body weight reductions were mirrored by a significant reduction in fat mass as indicated by the sum of skinfolds [female seven sites: 80.9 (8.1) to 68.2 (11.8) mm; male eight sites: 54.2 (8.7) to 41.8 (4.8) mm], percentage body fat [female 22.1 (1.0) to 19.7 (2.4)%; male 10.0 (0.9) to 7.8 (0.8)%], and total fat [female 12.5 (5.2) to 10.9 (1.4) kg; male 7.3 (1.9) to 5.6 (1.8) kg] (DXA). In contrast, no changes were observed in FFM despite a season of intensive rowing training. Seasonal body weight control was achieved through reduced total energy and dietary fat intakes. Acute body weight reductions were achieved by exercise in 73.3% of participants, food restriction in 71.4%, and fluid restrictions in 62.9%. CONCLUSIONS:Seasonal body weight alterations in lightweight rowers are in response to a significant reduction in fat mass. However, the weight restrictions appear to be limiting an increase in FFM which could be beneficial to rowing performance.
journal_name
Br J Sports Medjournal_title
British journal of sports medicineauthors
Morris FL,Payne WRdoi
10.1136/bjsm.30.4.301subject
Has Abstractpub_date
1996-12-01 00:00:00pages
301-4issue
4eissn
0306-3674issn
1473-0480journal_volume
30pub_type
杂志文章abstract::Osteoarthritis (OA) is a common degenerative disease of joints. The major clinical features are pain and stiffness, leading to a decline in physical function, which may ultimately require joint replacement surgery. As no cure exists, current medical intervention focuses on symptomatic relief. Moreover, as no cure is i...
journal_title:British journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1136/bjsm.2004.011841
更新日期:2005-01-01 00:00:00
abstract::A previously well 30 year old man presented with a short history of intra-articular mechanical locking, swelling, and anteromedial joint line pain. There was localised tenderness, and McMurray's test was positive. Arthroscopy revealed a 3.6 x 2.6 x 1.5 cm firm pedicular localised pigmented villonodular synovitis origi...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.37.4.368
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2005.021980
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journal_title:British journal of sports medicine
pub_type: 杂志文章,随机对照试验
doi:10.1136/bjsports-2013-092713
更新日期:2015-02-01 00:00:00
abstract::A case of severe frostbite injury to the right foot is presented. This was caused by the inappropriate application of a bag of frozen chips to the foot in an attempt to ease non-specific pain. No specific acute traumatic injury was identified. As the patient was a teacher of physical education, the pain had initially ...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.34.5.382
更新日期:2000-10-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2003.007674
更新日期:2004-10-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章,多中心研究
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更新日期:2011-07-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.27.2.110
更新日期:1993-06-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2011-090230
更新日期:2011-12-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
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更新日期:1997-06-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2016-096570
更新日期:2017-07-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2007.045021
更新日期:2008-11-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1136/bjsm.30.3.200
更新日期:1996-09-01 00:00:00
abstract::Soccer is the world's most popular sport, with over 200 million participants world wide. Fractures account for only 4-9% of acute injuries, and hip fracture-dislocation is extremely uncommon. The potentially serious long term sequelae require that team physicians have an awareness of this injury. Two cases of traumati...
journal_title:British journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1136/bjsm.2003.005736
更新日期:2004-08-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1136/bjsports-2011-090838
更新日期:2012-11-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.13.4.156
更新日期:1979-12-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2008.049411
更新日期:2010-07-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2012-091395
更新日期:2012-09-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
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journal_title:British journal of sports medicine
pub_type: 杂志文章,多中心研究
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journal_title:British journal of sports medicine
pub_type: 杂志文章
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更新日期:2007-02-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章,随机对照试验
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更新日期:2012-07-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2002.001297
更新日期:2004-02-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2013-092386
更新日期:2013-11-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
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更新日期:2015-04-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2012-091028
更新日期:2013-03-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.25.2.102
更新日期:1991-06-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.16.1.13
更新日期:1982-03-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.37.4.335
更新日期:2003-08-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章,随机对照试验
doi:10.1136/bjsports-2013-093184
更新日期:2015-02-01 00:00:00