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  • Author: Duncan Macfarlane x
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Duncan Macfarlane and Wong Tung Kwong

Levels of activity and enjoyment were measured in 73 Hong Kong primary school children (39 girls and 34 boys), during regularly scheduled physical education (PE) classes. Classroom activities were classified into one of 4 types (ball games, athletics, gymnastics and free play). Activity levels were monitored by heart rate telemetry and by direct observation (CARS), whilst enjoyment was scored using a 5-point Likert scale. Results showed that the average PE class used 22 minutes of the scheduled 35 class time, whilst the students spent 3.7 min in moderate-to-vigorous (MVPA) activity (60-90%HRR), and nearly 50% of the children spent less than 2 minutes with their heart rate above 159 beats · min−1. There were no significant differences in activity levels between genders. Ball games and free play generally produced statistically higher heart rates and CARS values than gymnastics. The levels of enjoyment were low (3.7 − 1.0), but did not vary significantly between gender or activity type. A variety of social and environmental factors may contribute to these low activity and enjoyment levels.

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Ester Cerin, Anthony Barnett, Man-chin Cheung, Cindy H.P. Sit, Duncan J. Macfarlane and Wai-man Chan

This study examined reliability and validity of the Chinese version of the International Physical Activity Questionnaire–Long Form (IPAQ-LC) in Chinese seniors, including moderating effects of neighborhood walkability and socioeconomic status (SES) on reliability and validity. The IPAQ-LC was interviewer-administered (n = 96), accelerometer and 7-day walk-diary data were collected (n = 94), and the IPAC-LC was readministered (N = 92). Acceptable reliability was found for all measures of physical activity (PA) overall and across different types of neighborhood. Participants from highly walkable neighborhoods were more reliable at estimating walking for transport. Participants from low-SES areas were less reliable at estimating leisure-time PA and sitting but more reliable at estimating transport-related walking. IPAQ-LC walking was significantly related to light- but not moderate-intensity accelerometry-based PA. It was moderately to strongly related to a 7-day diary of walking. The data imply slow-paced walking, probably due to age, climate, and terrain. The findings suggest that the IPAQ-LC’s reliability and validity are acceptable in Chinese seniors.

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Jacqueline Kerr, James F. Sallis, Neville Owen, Ilse De Bourdeaudhuij, Ester Cerin, Takemi Sugiyama, Rodrigo Reis, Olga Sarmiento, Karel Frömel, Josef Mitáš, Jens Troelsen, Lars Breum Christiansen, Duncan Macfarlane, Deborah Salvo, Grant Schofield, Hannah Badland, Francisco Guillen-Grima, Ines Aguinaga-Ontoso, Rachel Davey, Adrian Bauman, Brian Saelens, Chris Riddoch, Barbara Ainsworth, Michael Pratt, Tom Schmidt, Lawrence Frank, Marc Adams, Terry Conway, Kelli Cain, Delfien Van Dyck and Nicole Bracy

Background:

National and international strategies to increase physical activity emphasize environmental and policy changes that can have widespread and long-lasting impact. Evidence from multiple countries using comparable methods is required to strengthen the evidence base for such initiatives. Because some environment and policy changes could have generalizable effects and others may depend on each country’s context, only international studies using comparable methods can identify the relevant differences.

Methods:

Currently 12 countries are participating in the International Physical Activity and the Environment Network (IPEN) study. The IPEN Adult study design involves recruiting adult participants from neighborhoods with wide variations in environmental walkability attributes and socioeconomic status (SES).

Results:

Eleven of twelve countries are providing accelerometer data and 11 are providing GIS data. Current projections indicate that 14,119 participants will provide survey data on built environments and physical activity and 7145 are likely to provide objective data on both the independent and dependent variables. Though studies are highly comparable, some adaptations are required based on the local context.

Conclusions:

This study was designed to inform evidence-based international and country-specific physical activity policies and interventions to help prevent obesity and other chronic diseases that are high in developed countries and growing rapidly in developing countries.