Determination of young adults' sedentary time with a multisensory activity monitor and activity log diary
| Autor: | James R. Sexsmith, Tasuku Terada |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Adult
Male medicine.medical_specialty Biomedical Engineering Biophysics Health Informatics Bioengineering Audiology Metabolic equivalent Biomaterials Young Adult Metabolic Equivalent Criterion validity Humans Medicine Body Weights and Measures Young adult Exercise Sedentary lifestyle Sedentary time business.industry Reproducibility of Results Actigraphy Activity monitor Light intensity Physical therapy Female Sedentary Behavior business Information Systems |
| Zdroj: | Technology and Health Care. 23:835-845 |
| ISSN: | 1878-7401 0928-7329 |
| DOI: | 10.3233/thc-151027 |
| Popis: | BACKGROUND Quantification of sedentary time still remains a challenge. OBJECTIVES This study examined: 1) whether a multisensory activity monitor could accurately measure sedentary activities and discriminate them from light intensity activities; and 2) the validity of activity log diary (AL) in estimating sedentary time using the monitor as a criterion measure. METHODS Thirty healthy individuals performed sedentary and light intensity activities in a laboratory while being equipped with a metabolic measurement cart (MMC) and the multisensory monitor. Subsequently, a subset of 19 participants completed AL while wearing the monitor for three days under free-living conditions. RESULTS Metabolic equivalents (METs) measured by the multisensory monitor during sedentary activities were similar to those measured by MMC and were significantly lower than light-intensity activities (p < 0.001). Relative criterion validity of AL assessed by Pearson's correlation coefficient was high (r = 0.68, p < 0.01). Absolute criterion validity examined by Bland-Altman plots showed small mean difference between AL and the monitor (36.9 minutes ⋅ day(-1)) with its limits of agreement ranging from -103.3 to 177.1 minutes ⋅ day(-1). CONCLUSION The multisensory monitor is capable of accurately measuring sedentary activities and distinguishing them from light-intensity activities. Compared to the multisensory monitor, our results showed that AL provides valid estimate of overall sedentary time. |
| Databáze: | OpenAIRE |
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