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http://hdl.handle.net/11375/23333
Title: | The Validity of Heart Rate and Accelerometry in the Assessment of Physical Activity in Pre-School Children |
Authors: | Hirji, A. |
Advisor: | Blimkie, C. J. R. |
Department: | Human Biodynamics |
Keywords: | child;pre-school;heart rate;accelerometry;physical activity |
Publication Date: | 1995 |
Abstract: | The purpose of this study was to validate heart rate recording (Polar Vantage XL), and accelerometry (Tritrac-R3D) against a direct observational technique (BEACHES) in the assessment of physical activity in 49 healthy male and female pre-schoolers (3.0 to 5.9 yrs). Activity was assessed in a controlled laboratory environment and in 2 field trials during spontaneous uncontrolled activity. During the laboratory session, subjects wore a heart rate monitor and an accelerometer while performing a choreographed routine of activities. The actual level was coded concurrently on the BEACHES scale by a trained observer. The three measures were significantly correlated during the laboratory (r = 0.76-0.85) and field (r = 0.50-0.85) conditions. There was no difference in mean scores for activity level of the group between two different days of field observation, however, there was considerable intra-subject variability as reflected by the low to moderate rank order correlations for all techniques. It was found that a measurement interval of greater than 5 min would likely increase the correlations. These findings suggest that the three measures of PA provide similar information about the level of PA in both a controlled and the free play environment, and pre-school children as a group generally maintain a similar level of activity from day to day. |
URI: | http://hdl.handle.net/11375/23333 |
Appears in Collections: | Digitized Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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hirji_a_1995_masters.pdf | 9.45 MB | Adobe PDF | View/Open |
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