Abstract:
AIM:The aim of this review is to summarise issues surrounding the measurement of physical activity (PA) by self-report and accelerometry in youth (2-18 years old). Current levels and temporal trends in PA and sport participation and the effect of assessment method on data interpretation will be summarised. METHODS:Relevant papers were extracted from a computerised literature search of MEDLINE and personal databases. Additional papers were extracted from reference lists of recently published reviews. RESULTS:The criterion validity (direct comparison with an objective method) of self-reported instruments is low to moderate, with correlation coefficients generally between 0.3 and 0.4. Self-report instruments overestimate the intensity and duration of PA and sport participation. The interpretation of PA data from accelerometry is a challenge, and specific issues include the definition of intensity thresholds and the influence of age on intensity thresholds. Recent data on self-reported PA in youth suggest that between 30% and 40% are sufficiently active. Prevalence values for sufficiently active youth measured by accelerometry range between 1% and 100%, depending on the intensity thresholds used. Sport participation is likely to contribute to higher levels of PA. The available evidence does not support the notion that PA levels and sport participation in youth have declined in recent decades. CONCLUSION:The number of youth meeting current PA guidelines varies by assessment method and the intensity thresholds used when PA is measured by accelerometry. The available evidence does not firmly support the notion that PA in young people has declined during the last decades. It is unlikely that any self-report method is sufficiently accurate for examining cross-cultural differences and temporal trends in young people's PA and sport participation over time. Surveillance systems therefore need to strive for an international standardisation using objective measurements of PA to complement existing self-report instruments.
journal_name
Br J Sports Medjournal_title
British journal of sports medicineauthors
Ekelund U,Tomkinson G,Armstrong Ndoi
10.1136/bjsports-2011-090190subject
Has Abstractpub_date
2011-09-01 00:00:00pages
859-65issue
11eissn
0306-3674issn
1473-0480pii
45/11/859journal_volume
45pub_type
杂志文章,评审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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abstract::The aims of this review were to determine the level of evidence for exercise training in the management of patients with chronic obstructive pulmonary disease (COPD) and provide evidence-based recommendations on exercise training. This review was performed in PubMed and Cochrane Library. Included studies investigated ...
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
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journal_title:British journal of sports medicine
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abstract:OBJECTIVE:To analyse risk factors in alpine skiing. DESIGN:A controlled multicentre survey of injured and non-injured alpine skiers. SETTING:One tertiary and two secondary trauma centres in Bern, Switzerland. PATIENTS AND METHODS:All injured skiers admitted from November 2007 to April 2008 were analysed using a comp...
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journal_title:British journal of sports medicine
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pub_type: 杂志文章
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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: 临床试验,杂志文章,随机对照试验
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pub_type: 杂志文章,多中心研究
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