Abstract：
:The purpose was to examine in free-living individuals from a high-density city (1) the objectively determined physical activity levels across quartiles derived from pedometer step counts, (2) the pedometer steps day(-1) required to meet health-enhancing guidelines of accruing 30 min day(-1) of moderate physical activity and (3) the agreement between three objective criteria for the pedometer guidelines. Over 7 days 49 Hong Kong Chinese aged 15-55 years (n = 30 males) wore a polar heart rate monitor (HRM), an MTI and Tritrac accelerometer, plus a Yamax pedometer for >or=600 min day(-1). Participants averaged 9,839 +/- 3,088 steps day(-1), whilst accumulating 44.5 +/- 22.6, 43.1 +/- 21.7, and 24.7 +/- 19.3 min day(-1) of moderate physical activity by the Tritrac, MTI and HRM, respectively. Significant differences between quartiles of pedometer-determined activity were predominantly seen in the accelerometry data, especially during moderate and moderate-to-vigorous intensity activity (effect sizes >1.5 between upper and lower quartiles), but not seen in the HRM data. Using both criterion accelerometer datasets, a threshold of 8,000 steps day(-1) accurately categorized approximately 90% of those achieving, and approximately 80% of those not achieving, 30 min day(-1) of appropriate activity. They also produced a screening sensitivity of approximately 95% and a specificity of approximately 70%, which were considerably higher than those from the HRM data. Overall, the agreement between the three criterion measures suggests 8,000 steps day(-1) might be a valid screening tool as a proxy for classifying those meeting public health physical activity recommendations of 30 min day(-1) of moderate activity.
journal_name
Eur J Appl Physioljournal_title
European journal of applied physiologyauthors
Macfarlane DJ,Chan D,Chan KL,Ho EY,Lee CCdoi
10.1007/s00421-008-0789-4subject
Has Abstractpub_date
2008-10-01 00:00:00pages
435-44issue
3eissn
1439-6319issn
1439-6327journal_volume
104pub_type
杂志文章abstract：:The sleep-wake state has a profound influence on many, perhaps most, aspects of normal physiology and is strongly implicated in the mediation (or remediation) of impaired health and performance. Many sleep disorders stem from abnormal respiratory anatomy or sleep-induced changes in respiratory control, underscoring th...
journal_title：European journal of applied physiology
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更新日期：2002-07-01 00:00:00
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journal_title：European journal of applied physiology
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journal_title：European journal of applied physiology
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journal_title：European journal of applied physiology
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更新日期：2011-07-01 00:00:00
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journal_title：European journal of applied physiology
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,随机对照试验
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journal_title：European journal of applied physiology
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journal_title：European journal of applied physiology
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journal_title：European journal of applied physiology
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journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
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journal_title：European journal of applied physiology
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更新日期：2012-01-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章,评审
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journal_title：European journal of applied physiology
pub_type： 临床试验,杂志文章
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journal_title：European journal of applied physiology
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journal_title：European journal of applied physiology
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journal_title：European journal of applied physiology
pub_type： 杂志文章,随机对照试验
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更新日期：2012-10-01 00:00:00
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journal_title：European journal of applied physiology
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更新日期：2007-06-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章,评审
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更新日期：2000-11-01 00:00:00
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journal_title：European journal of applied physiology
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更新日期：2008-09-01 00:00:00
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journal_title：European journal of applied physiology
pub_type： 杂志文章
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更新日期：2018-11-01 00:00:00
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pub_type： 杂志文章,评审
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