Development of Step-Count Cut Points for School-Day Vigorous Physical Activity
المؤلفون المشاركون
Fu, You
Zhang, Peng
Burns, Ryan
Brusseau, Timothy A.
المصدر
العدد
المجلد 2018، العدد 2018 (31 ديسمبر/كانون الأول 2018)، ص ص. 1-7، 7ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2018-03-28
دولة النشر
مصر
عدد الصفحات
7
التخصصات الرئيسية
الملخص EN
Background.
No study has established step-count cut points for varying amounts of accelerometer-assessed vigorous physical activity (VPA) accrued during the school day in children.
The purpose of this study was to establish step-count cut points for discriminating children meeting VPA in 5 minutes, 10 minutes, 15 minutes, and 20 minutes per 7-hour school day.
Methods.
Participants were a convenience sample of 1,053 children (mean age = 8.4 (1.8) years) recruited from 5 schools from the Mountain West region of the USA.
Data within students were observed across multiple semesters totaling 2,119 separate observations.
Step counts and time in VPA were assessed using ActiGraph wGT3X-BT triaxial accelerometers that were worn during the entirety of a 7-hour school day for one school week.
Average censored step counts and minutes in VPA were calculated across 3 to 5 days.
Receiver operating characteristic (ROC) curves were employed to derive step counts via calculation of the maximum Youden J statistic.
Results.
Area-under-the-curve (AUC) scores ranged from AUC = 0.81 (95% CI: 0.78–0.83; p<0.001) for meeting at least 5 minutes of VPA to AUC = 0.94 (95% CI: 0.88–1.00, p<0.001) for meeting at least 20 minutes of VPA.
Approximately 3,460 steps best discriminated children meeting at least 5 minutes of VPA (sensitivity = 74.0%, specificity = 74.0%, and accuracy = 74.1%) and approximately 5,628 steps best discriminated children meeting at least 20 minutes per day of VPA (sensitivity = 85.7%, specificity = 95.1%, and accuracy = 95.1%).
Conclusion.
Step counts can discriminate with reasonable accuracy children that meet at least 5 minutes of school-day VPA and with strong accuracy children that meet 20 minutes of school-day VPA.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Burns, Ryan& Brusseau, Timothy A.& Fu, You& Zhang, Peng. 2018. Development of Step-Count Cut Points for School-Day Vigorous Physical Activity. BioMed Research International،Vol. 2018, no. 2018, pp.1-7.
https://search.emarefa.net/detail/BIM-1129986
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Burns, Ryan…[et al.]. Development of Step-Count Cut Points for School-Day Vigorous Physical Activity. BioMed Research International No. 2018 (2018), pp.1-7.
https://search.emarefa.net/detail/BIM-1129986
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Burns, Ryan& Brusseau, Timothy A.& Fu, You& Zhang, Peng. Development of Step-Count Cut Points for School-Day Vigorous Physical Activity. BioMed Research International. 2018. Vol. 2018, no. 2018, pp.1-7.
https://search.emarefa.net/detail/BIM-1129986
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1129986
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر