Abstract:
OBJECTIVE:To examine whether the associations between sedentary behaviours (ie, daily sitting/TV-viewing time) and mortality from cardiovascular disease (CVD) and cancer differ by different levels of physical activity (PA). DESIGN:Harmonised meta-analysis of prospective cohort studies. Data on exposure variables were harmonised according to a predefined protocol and categorised into four groups for sedentary behaviours and into quartiles of PA (MET-hour/week). DATA SOURCES:PubMed, PsycINFO, Embase, Web of Science, Sport Discus and Scopus. ELIGIBILITY CRITERIA FOR SELECTING STUDIES:Individual level data on both sedentary behaviours and PA and reported effect estimates for CVD or cancer mortality. RESULTS:Nine studies (n=850 060; deaths=25 730) and eight studies (n=777 696; deaths=30 851) provided data on sitting time and CVD and cancer mortality, respectively. Five studies had data on TV-viewing time and CVD (n=458 127; deaths=13 230) and cancer (n=458 091; deaths=16 430) mortality. A dose-response association between sitting time (9%-32% higher risk; p for trend <0.001) and TV time (3%-59% higher risk; p for trend <0.001) with CVD mortality was observed in the 'inactive', lowest quartile of PA. Associations were less consistent in the second and third quartiles of PA, and there was no increased risk for CVD mortality with increasing sedentary behaviours in the most active quartile. Associations between sedentary behaviours and cancer mortality were generally weaker; 6%-21% higher risk with longer sitting time observed only in the lowest quartile of PA. CONCLUSION:PA modifies the associations between sedentary behaviours and CVD and cancer mortality. These findings emphasise the importance of higher volumes of moderate and vigorous activity to reduce, or even eliminate these risks, especially for those who sit a lot in their daily lives.
journal_name
Br J Sports Medjournal_title
British journal of sports medicineauthors
Ekelund U,Brown WJ,Steene-Johannessen J,Fagerland MW,Owen N,Powell KE,Bauman AE,Lee IMdoi
10.1136/bjsports-2017-098963subject
Has Abstractpub_date
2019-07-01 00:00:00pages
886-894issue
14eissn
0306-3674issn
1473-0480pii
bjsports-2017-098963journal_volume
53pub_type
杂志文章,meta分析abstract:AIM:There is little information on the plasma free amino acid patterns of elite athletes against which fatigue and nutrition can be considered. Therefore the aim was to include analysis of this pattern in the medical screening of elite athletes during both especially intense and light training periods. METHODS:Plasma ...
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
abstract:BACKGROUND:Chronic painful insertional Achilles tendinopathy is seen in both physically active and non-active individuals. Painful eccentric training, where the patients load the Achilles tendon into full dorsiflexion, has shown good results in patients with mid-portion Achilles tendinosis. However, only 32% of patient...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2007.039545
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abstract:BACKGROUND:Joint moments computed using inverse dynamic techniques are important estimators of net joint loads. Joints moments computed from marker position and ground reaction force data filtered using different cut-off frequencies may capture changes in moment magnitudes at a single joint that exceed normal physiolog...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2012-091398
更新日期:2014-03-01 00:00:00
abstract::A professional rugby league player sustained a left eyebrow laceration during a match which immediately started to bleed. Within seconds he was taken to the sideline and had the laceration closed with six staples by the team doctor. Bleeding was arrested and he returned to play, taking the ball within 80 s of sufferin...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2003.005470
更新日期:2004-08-01 00:00:00
abstract:OBJECTIVES:To measure functional recovery following acute anterior cruciate ligament (ACL) rupture using a simple and reliable clinical movement analysis system. Clinic based methods that simultaneously quantify different aspects of movement over a range of activities and model functional recovery will help guide rehab...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2005.019984
更新日期:2005-11-01 00:00:00
abstract::Elite athletes endeavour to train and compete even when ill or injured. Their motivation may be intrinsic or due to coach and team pressures. The sports medicine physician plays an important role to risk-manage the health of the competing athlete in partnership with the coach and other members of the support team. The...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsports-2013-093222
更新日期:2014-04-01 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-2020-102723
更新日期:2020-12-21 00:00:00
abstract:OBJECTIVE:To compare the prevalence of self reported, physician diagnosed osteoarthritis (OA) of the hip in ex-professional footballers with that in age matched controls in the general public. METHOD:A questionnaire was sent to the 92 football league and premiership managers to assess the prevalence of OA of various j...
journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.37.1.80
更新日期:2003-02-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章
doi:10.1136/bjsm.2008.046185
更新日期:2008-06-01 00:00:00
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journal_title:British journal of sports medicine
pub_type: 杂志文章,评审
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pub_type: 杂志文章
doi:10.1136/bjsm.2005.018564
更新日期:2005-11-01 00:00:00
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journal_title:British journal of sports medicine
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journal_title:British journal of sports medicine
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journal_title:British journal of sports medicine
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更新日期:2012-03-01 00:00:00
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pub_type: 杂志文章,meta分析,评审
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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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journal_title:British journal of sports medicine
pub_type: 共识发展会议,杂志文章
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更新日期:2013-09-01 00:00:00
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journal_title:British journal of sports medicine
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journal_title:British journal of sports medicine
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journal_title:British journal of sports medicine
pub_type: 杂志文章,评审
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更新日期:2009-10-01 00:00:00
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更新日期:2007-11-01 00:00:00
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pub_type: 杂志文章
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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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更新日期:1991-09-01 00:00:00