Abstract:
OBJECTIVES:To identify physical activity that is beneficial for the maintenance of bone strength with increasing age by examining the relation between bone mineral density (BMD) and chronic endurance training in men. BMD at the proximal femur, its subregions, and the lumbar spine, and serum testosterone were compared between two groups of long distance runners with more than 20 years of training experience and non-athletic controls. METHODS:Runners (n = 12) were divided into (a) high volume runners (n = 7), running 64-80 km a week, and (b) very high volume runners (n = 5), running more than 95 km a week, and compared with non-athletic male controls, exercising in non-endurance oriented activities two to four times a week. BMD (g/cm2) at the total proximal femur, femoral neck, trochanteric region, and lumbar spine was measured by dual energy x ray absorptiometry. Total testosterone (nmol/l) and free testosterone (pmol/l) in serum were measured by radioimmunoassay from single fasting blood samples. RESULTS:Height, weight, and age (range = 40-55 years) were not significantly different between groups. The high volume runners had significantly higher BMD at the total proximal femur (1.09 (0.17) v 0.94 (0.056)), femoral neck (0.91 (0.16) v 0.78 (0.071)), and trochanteric region (0.85 (0.14) v 0.73 (0.053)) than controls (p<0.05). The differences in BMD for the proximal femur between the very high volume runners and the other two groups were not significant. There was no difference in lumbar spine BMD, total testosterone, or free testosterone between groups. However, there was a significant negative correlation between total testosterone (r = -0.73, p<0.01) and free testosterone (r = -0.79, p<0.005) and running volume in the distance runners. CONCLUSIONS:Long term distance running with training volumes less than 80 km a week had a positive effect on BMD of the proximal femur. With running volumes greater than 64 km a week, training was inversely related to testosterone levels, but levels remained within the normal range.
journal_name
Br J Sports Medjournal_title
British journal of sports medicineauthors
MacKelvie KJ,Taunton JE,McKay HA,Khan KMdoi
10.1136/bjsm.34.4.273keywords:
subject
Has Abstractpub_date
2000-08-01 00:00:00pages
273-8issue
4eissn
0306-3674issn
1473-0480journal_volume
34pub_type
杂志文章abstract:BACKGROUND:The mechanism that causes pain in chronic Achilles tendinosis is not known. However, high resolution colour Doppler ultrasound has shown that neovascularisation may be involved. OBJECTIVE:To investigate if sclerosing the neovessels would affect the level of tendon pain. METHODS:The effect of colour Doppler...
journal_title:British journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1136/bjsm.36.3.173
更新日期:2002-06-01 00:00:00
abstract::Twelve female age-group swimmers and twelve female controls, aged ten to sixteen, performed a pre-training discontinuous maximal cycle ergometer test to determine the capacities of their anaerobic (alactacid and lactacid) and aerobic energy systems. Heart rate and oxygen uptake were determined during rest, exercise, a...
journal_title:British journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1136/bjsm.12.1.14
更新日期:1978-03-01 00:00:00
abstract:OBJECTIVES:To compare versions 8 and 10 of the Orchard Sports Injury Classification System (OSICS) to determine whether the revised version of OSICS has improved its use in a sports medicine setting, and to assess the inter-rater reliability of OSICS-10. METHODS:Injury surveillance data, gathered over a 2 year period ...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2008.051979
更新日期:2009-07-01 00:00:00
abstract:OBJECTIVES:To investigate the prevalence of inguinal canal posterior wall deficiency (sports hernia) in professional Australian Rules footballers using an ultrasound technique and correlate the results with the clinical symptom of groin pain. METHODS:Thirty five professional Australian footballers with and without gro...
journal_title:British journal of sports medicine
pub_type: 临床试验,杂志文章
doi:10.1136/bjsm.32.2.134
更新日期:1998-06-01 00:00:00
abstract:OBJECTIVE:Despite the rise in specialist clinical services for the management of sports and active recreation injury, many patients attend hospital emergency departments for treatment. The purpose of this study was to describe sports injury cases presented to selected hospital emergency departments around Australia for...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.32.3.220
更新日期:1998-09-01 00:00:00
abstract::The objective of the present systematic review was to investigate whether physical fitness in childhood and adolescence is a predictor of cardiovascular disease (CVD) risk factors, events and syndromes, quality of life and low back pain later in life. Physical fitness-related components were: cardiorespiratory fitness...
journal_title:British journal of sports medicine
pub_type: 杂志文章,评审
doi:10.1136/bjsm.2008.056499
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abstract::We have evaluated the available medical care to sports divers by a postal questionnaire sent to consultants and senior registrars in Accident and Emergency medicine in the UK, assessing their training in underwater medicine. Replies were received from 60 of 96 consultants (63%) and 32 of 58 (55%) senior registrars. Th...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.25.2.102
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.32.1.25
更新日期:1998-03-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.29.2.134
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doi:10.1136/bjsports-2018-099411
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journal_title:British journal of sports medicine
pub_type: 杂志文章,多中心研究
doi:10.1136/bjsports-2012-091357
更新日期:2014-10-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2016-096236
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journal_title:British journal of sports medicine
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1136/bjsm.29.3.171
更新日期:1995-09-01 00:00:00
abstract:OBJECTIVE:To summarise the evidence for non-pharmacological management of low back pain (LBP) in athletes, a common problem in sport that can negatively impact performance and contribute to early retirement. DATA SOURCES:Five databases (EMBASE, Medline, CINAHL, Web of Science, Scopus) were searched from inception to S...
journal_title:British journal of sports medicine
pub_type: 杂志文章,评审
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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-2018-100036
更新日期:2019-09-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.20.1.31
更新日期:1986-03-01 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.2007.036475
更新日期:2007-08-01 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
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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,meta分析,评审
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更新日期:2015-12-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.14.4.229
更新日期:1980-12-01 00:00:00
abstract::At the request of the Service des Haras, our laboratory works on the toxicological problems of the sport-horse. These studies have resulted in the setting up of an anti-doping control for equestrian competitions of various types, not only flat racing. During events, horses, must be calm and docile to the riders' order...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.10.3.143
更新日期:1976-10-01 00:00:00
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pub_type: 杂志文章
doi:10.1136/bjsm.36.6.446
更新日期:2002-12-01 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-2013-092950
更新日期:2013-12-01 00:00:00
abstract::Fall in skin temperature during initial muscular work was investigated in ten healthy men. Bicycle exercise was performed at workloads of 50-150 W in a climatic chamber at ambient temperatures of 10-40 degrees C (relative humidity 45-55%). Skin temperatures at seven or eight points over the body surface were measured ...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.26.1.29
更新日期:1992-03-01 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:2014-02-01 00:00:00
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pub_type: 杂志文章,多中心研究
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更新日期:2009-12-01 00:00:00
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pub_type: 杂志文章
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更新日期:2006-04-01 00:00:00
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pub_type: 杂志文章
doi:10.1136/bjsports-2014-093550
更新日期:2014-05-01 00:00:00