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  • 1
    Electronic Resource
    Electronic Resource
    Active commuting to and from school and BMI in elementary school children – preliminary data (2005)
    Oxford, UK : Blackwell Science Ltd
    Child 31 (2005), S. 0 
    Details
    ISSN: 1365-2214
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine , Psychology
    Notes: Background  United States National Health Objectives include increasing the proportion of trips made by walking to and from school for children who live within 1.6 km to 50%. The purpose of this objective is to increase the level of physical activity among children. However, the impact of walking, bicycling or skating (active commuting) to and from school on the prevalence of overweight is unknown.Methods  Body mass index (BMI) was measured for 320 children (age 10.2 ± 0.7 years) in September. Over 5 months, an active commuting index (SI) and daily physical activity were estimated via questionnaire. In April, BMI and body fat were measured.Results  A significant positive association was found between April BMI and SI adjusting for September BMI (partial r = 0.03, P 〈 0.05). Positive associations were found between SI and physical activity before school (r = 0.17, P 〈 0.05) and daily moderate intensity physical activity (r = 0.13, P 〈 0.05). There were no significant association between SI and BF (P 〉 0.05).Conclusions  This preliminary data suggests that active commuting does not appear to provide sufficient amounts of physical activity to attenuate BMI; however, it may contribute to the attainment of physical activity recommendations. Future research is needed to objectively measure the impact of active commuting on the prevalence of overweight.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2214.2005.00513.x
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  • 2
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    Unknown
    DAIRYING IN MINNESOTA. (1915)
    Macomb, Ill., etc. : Periodicals Archive Online (PAO)
    Journal of Geography. 14 (1915/1916) 206 
    Details
    ISSN: 0022-1341
    Topics: Geography
    URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pao:&rft_dat=xri:pao:article:1129-1915-000-00-000063
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  • 3
    Electronic Resource
    Electronic Resource
    Comparison of continuous and discontinuous protocols for the determination of peak oxygen uptake in arm cranking (1983)
    Springer
    European journal of applied physiology 51 (1983), S. 3-6 
    Details
    ISSN: 1439-6327
    Keywords: Arm work ; Peak oxygen uptake
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Twenty male subjects, age (± SD) 31.1±5.6 years and weight 74.3±12.7 kg participated in this study to compare the $$\dot V$$ O2 peak values in arm cranking obtained using continuous (C) and discontinuous (D) protocols. Each subject performed a continuous (C) and discontinuous (D) protocol in random order on two separate days. Cranking was performed at 60 rev·min−1 with tests terminated when this fell below 50. Peak values for oxygen uptake ventilation and heart rate were determined during each test. The C protocol involved increasing power output each minute, while in the D protocol 2 min work bouts were separated by 1 min rest intervals. No significant differences (p〉0.05) between the C and D protocols were shown on any measured variable. It was concluded that the use of C or D protocols for determining $$\dot V$$ O2 peak in arm cranking provide comparable results with the C protocol being advantageous in terms of administration time.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00952531
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