Abstract:
:The performance of the Caltrac accelerometer was studied in elementary school-age children under field and laboratory conditions. In Study 1, 35 children (20 boys, 15 girls, mean age = 10.8 yr) wore the accelerometer and a heart rate (HR) monitor for 2 d. Caltrac activity counts per hour were compared to the mean "activity HR", which was calculated by subtracting the mean of the five lowest HRs of the day from each recorded HR. Pearson r's between accelerometer and activity HR were 0.54 (P less than 0.001) on day 1 and 0.42 (P less than 0.02) on day 2. Inter-instrument reliability in the field was r = 0.96. Both accelerometer and HR data were significantly correlated with physical activity recalls of the same day. In Study 2, 15 children walked/ran for 10 min at 3, 4, and 5 mph on a horizontal treadmill while wearing two accelerometers. Oxygen uptake was directly measured each minute. Reliability of the Caltracs in the laboratory was 0.89. Activity count correlated r = 0.82 (SEE = 23%) with net calorie cost per kg of body weight. Net caloric expenditure per kg of weight was 0.101 kcal.kg-1.d-1 per Caltrac activity count. These data support the use of the Caltrac accelerometer as a physical activity measure for school-age children, and the objective data tended to corroborate the children's short-term activity recalls.
journal_name
Med Sci Sports Exercjournal_title
Medicine and science in sports and exerciseauthors
Sallis JF,Buono MJ,Roby JJ,Carlson D,Nelson JAdoi
10.1249/00005768-199010000-00023subject
Has Abstractpub_date
1990-10-01 00:00:00pages
698-703issue
5eissn
0195-9131issn
1530-0315journal_volume
22pub_type
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journal_title:Medicine and science in sports and exercise
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1249/mss.0b013e3181591df7
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journal_title:Medicine and science in sports and exercise
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:2004-08-01 00:00:00
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doi:10.1249/01.mss.0000183186.98212.d5
更新日期:2006-01-01 00:00:00
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doi:10.1249/MSS.0000000000000737
更新日期:2016-01-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1097/00005768-199812000-00005
更新日期:1998-12-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
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更新日期:2000-09-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1097/00005768-199804000-00016
更新日期:1998-04-01 00:00:00
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journal_title:Medicine and science in sports and exercise
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更新日期:2008-10-01 00:00:00
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pub_type: 杂志文章
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更新日期:2004-11-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/00005768-198104000-00007
更新日期:1981-01-01 00:00:00
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journal_title:Medicine and science in sports and exercise
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doi:10.1249/MSS.0b013e3181e0355e
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doi:10.1249/MSS.0b013e31816f1534
更新日期:2008-08-01 00:00:00
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更新日期:2004-09-01 00:00:00
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pub_type: 杂志文章
doi:10.1097/00005768-200101000-00008
更新日期:2001-01-01 00:00:00
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章
doi:10.1249/MSS.0b013e3181ab8cc0
更新日期:2009-12-01 00:00:00
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journal_title:Medicine and science in sports and exercise
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journal_title:Medicine and science in sports and exercise
pub_type: 杂志文章,随机对照试验
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更新日期:2019-04-01 00:00:00
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journal_title:Medicine and science in sports and exercise
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更新日期:2009-07-01 00:00:00
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更新日期:2011-03-01 00:00:00
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pub_type: 杂志文章,随机对照试验
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更新日期:2015-01-01 00:00:00
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更新日期:2009-09-01 00:00:00
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journal_title:Medicine and science in sports and exercise
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更新日期:2013-05-01 00:00:00
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更新日期:2002-01-01 00:00:00
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更新日期:2008-11-01 00:00:00
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pub_type: 杂志文章,随机对照试验
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更新日期:2017-09-01 00:00:00