Direct and indirect measurement of physical activity in older adults: a systematic review of the literature

International Journal of Behavioral Nutrition and Physical Activity

Research

Ryan Rhodes¹  Stuart MacDonald²  Holly Tuokko²  Kristina Kowalski³  Patti-Jean Naylor⁴ 

[1] Behavioural Medicine Laboratory, Faculty of Education, University of Victoria, Victoria, B.C, Canada;Department of Psychology, University of Victoria, Victoria, B.C, Canada;School of Exercise Science, Physical and Health Education and Department of Psychology, University of Victoria, Victoria, B.C, Canada;School of Exercise Science, Physical and Health Education, University of Victoria, Victoria, B.C, Canada;

关键词: Older adults;    Physical activity assessment;    Direct measurement;    Indirect measurement;    Self-report;    Questionnaires;    Accelerometry;    Pedometery;    Heart rate monitoring;    Indirect calorimetry;    Doubly labeled water;   

DOI  :  10.1186/1479-5868-9-148

 received in 2011-12-13, accepted in 2012-12-04,  发布年份 2012

来源: Springer

【 摘 要 】

BackgroundDue to physiological and cognitive changes that occur with aging, accurate physical activity (PA) measurement in older adults represents a unique challenge. The primary purpose of this study was to systematically review measures of PA and their use and appropriateness with older adults. A secondary aim was to determine the level of agreement between PA measures in older adults.MethodsLiterature was identified through electronic databases. Studies were eligible if they examined the correlation and/or agreement between at least 2 measures, either indirect and/or direct, of PA in older adults (> 65 years of age).ResultsThirty-six studies met eligibility criteria. The indirect and direct measures of PA across the studies differed widely in their ability to address the key dimensions (i.e., frequency, intensity, time, type) of PA in older adults. The average correlation between indirect and direct measures was moderate (r=0.38). The correlation between indirect and other indirect measures (r=0.29) was weak, while correlations between direct measures with other direct measures were high (real world: r= 0.84; controlled settings: r=0.92). Agreement was strongest between direct PA measures with other direct measures in both real world and laboratory settings. While a clear trend regarding the agreement for mean differences between other PA measures (i.e., direct with indirect, indirect with indirect) did not emerge, there were only a limited number of studies that reported comparable units.ConclusionsDespite the lack of a clear trend regarding the agreement between PA measures in older adults, the findings underscore the importance of valid, accurate and reliable measurement. To advance this field, researchers will need to approach the assessment of PA in older adults in a more standardized way (i.e., consistent reporting of results, consensus over cut-points and epoch lengths, using appropriate validation tools). Until then researchers should be cautious when choosing measures for PA that are appropriate for their research questions and when comparing PA levels across various studies.

【 授权许可】

CC BY   
© Kowalski et al.; licensee BioMed Central Ltd. 2012