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European Journal of Applied Physiology

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01-10-2018 | Original Article

Validity of a triaxial accelerometer and simplified physical activity record in older adults aged 64–96 years: a doubly labeled water study

Authors: Yosuke Yamada, Yukako Hashii-Arishima, Keiichi Yokoyama, Aya Itoi, Tetsuji Adachi, Misaka Kimura

Published in: European Journal of Applied Physiology | Issue 10/2018

Abstract

Background

The aim was to examine the validity of a triaxial accelerometer (ACCTRI) and a simplified physical activity record (sPAR) in estimating total energy expenditure (TEE) and physical activity level (PAL) in older adults with the doubly labeled water (DLW) method.

Methods

A total of 44 Japanese elderly individuals (64–96 years), of which 28 were community-dwelling healthy adults with or without sporting habits (S or NS group) and 16 were care home residents with frailty (F group), were included in the study. Basal metabolic rate (BMR) was measured by indirect calorimetry, TEE was obtained by the DLW method, and PAL was calculated as TEE/BMR. Daily step count was monitored by a pedometer (Lifecorder). The 24-h average metabolic equivalent was assessed by ACCTRI and sPAR.

Results

The TEE_DLW in men was 2704 ± 353, 2308 ± 442, and 1795 ± 338 kcal d⁻¹, and that in women was 2260 ± 208, 1922 ± 285, and 1421 ± 274 kcal d⁻¹ for the S, NS, and F groups, respectively. ACCTRI and sPAR systematically underestimated actual TEE (− 14.2 ± 11.6 and − 15.3 ± 12.3% for ACCTRI and sPAR, respectively). After diet-induced thermogenesis was taken into account for ACCTRI and sPAR, TEE_DLW was significantly correlated with TEE_ACCTRI (R² = 0.714) and TEE_sPAR (R² = 0.668). PAL_DLW was also significantly correlated with PAL_ACCTRI (R² = 0.438) and PAL_sPAR (R² = 0.402).

Conclusions

Age, living conditions, frailty, and sporting habits contribute to TEE and PAL in the elderly population. ACCTRI and sPAR underestimated TEE and PAL, and adequate corrections are required. The corrected ACCTRI and sPAR are both useful tools to estimate TEE and PAL.

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Title: Validity of a triaxial accelerometer and simplified physical activity record in older adults aged 64–96 years: a doubly labeled water study
Authors: Yosuke Yamada
Yukako Hashii-Arishima
Keiichi Yokoyama
Aya Itoi
Tetsuji Adachi
Misaka Kimura
Publication date: 01-10-2018
Publisher: Springer Berlin Heidelberg
Published in: European Journal of Applied Physiology / Issue 10/2018
Print ISSN: 1439-6319
Electronic ISSN: 1439-6327
DOI: https://doi.org/10.1007/s00421-018-3944-6

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Validity of a triaxial accelerometer and simplified physical activity record in older adults aged 64–96 years: a doubly labeled water study

Abstract

Background

Methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

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