ORCID Profile
0000-0002-4215-0942
Current Organisation
Dalhousie University
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Publisher: Springer Science and Business Media LLC
Date: 10-2018
Publisher: Ovid Technologies (Wolters Kluwer Health)
Date: 04-2007
Publisher: Informa UK Limited
Date: 2009
DOI: 10.3109/17477160902846179
Abstract: Spontaneous and transitory movement patterns are characteristic of children. The aim of this study was to explore the relationship between short, frequent activity bouts and children's health. Physical activity was recorded every 2 s by accelerometry (ActiGraph GT1M) for seven days in 47 boys (age 8-10 years). Summary activity measures and activity pattern characteristics (frequency, intensity and duration of > or = 4 s [short] and > or = 5 min [long] bouts of > or= light [> or = LIGHT], > or = moderate [> or = MOD], > or = vigorous [> or = VIG], and > or = hard [> or = HARD] intensity activity) were recorded. Microvascular function was assessed using laser Doppler perfusion imaging as the forearm skin blood flow response to the iontophoretic application of acetylcholine (endothelial dependent vasodilator) and sodium nitroprusside (endothelial independent vasodilator) at rest and following maximal exercise. Waist circumference, resting blood pressure and aerobic fitness (VO(2peak)) were measured. The intensity of short and long > or = LIGHT bouts and the frequency of short and long > or =MOD bouts were correlated with waist circumference (r = - 0.42 to -0.52, p < 0.01) and VO(2peak) (r = 0.42 to 0.47, p or =LIGHT bouts were associated with change in endothelial function from rest to post-exercise (r = 0.34 to 0.55, p or =4 s) of activity and health was as strong as relationships identified between longer bouts (> or =5 min) and health. This is encouraging as sporadic intermittent activity is characteristic of children's activity pattern.
Publisher: Elsevier BV
Date: 08-2009
DOI: 10.1016/J.YPMED.2009.06.012
Abstract: To assess whether the activity pattern differs between normal weight and overweight boys across weekdays and weekend days. Physical activity was recorded every 2 s by accelerometry in 32 normal weight and 15 overweight boys aged 8-10 years for four weekdays and two weekend days (South-West England 2007). Summary activity measures and activity pattern characteristics (frequency, intensity and duration of > or =4 s (short) and > or =5-min (long) bouts of > or =light, > or =moderate, > or =vigorous, and > or =hard activity) were recorded. Normal weight boys accumulated more > or =hard activity (p<0.05) but other summary measures did not differ by weight status. However, the activity pattern differed in overweight relative to normal weight boys. The most frequent short bouts were shorter and less intense (p or =moderate long bouts were shorter and less frequent (p or =light, > or =moderate (and for overweight boys > or =vigorous) short bouts dropped-off) (p or =moderate bouts, relative to normal weight boys suggesting that the activity pattern may be important for weight control.
Publisher: Routledge
Date: 11-09-2008
Publisher: Routledge
Date: 27-02-2011
Publisher: Wiley
Date: 08-12-2020
DOI: 10.1002/PPUL.25185
Location: United Kingdom of Great Britain and Northern Ireland
No related grants have been discovered for Michelle Stone.