@article{ref1,
title="Mobility in old age: capacity is not performance",
journal="BioMed research international",
year="2016",
author="Giannouli, Eleftheria and Bock, Otmar and Mellone, Sabato and Zijlstra, Wiebren",
volume="2016",
number="",
pages="e3261567-e3261567",
abstract="Background. Outcomes of laboratory-based tests for mobility are often used to infer about older adults' performance in real life; however, it is unclear whether such association exists. We hypothesized that mobility capacity, as measured in the laboratory, and mobility performance, as measured in real life, would be poorly linked. <br><br>METHODS. The sample consisted of 84 older adults (72.5 ± 5.9 years). Capacity was assessed via the iTUG and standard gait parameters (stride length, stride velocity, and cadence). Performance was assessed in real life over a period of 6.95 ± 1.99 days using smartphone technology to calculate following parameters: active and gait time, number of steps, life-space, mean action-range, and maximum action-range. Correlation analyses and stepwise multiple regression analyses were applied. <br><br>RESULTS. All laboratory measures demonstrated significant associations with the real-life measures (between r =.229 and r =.461). The multiple regression analyses indicated that the laboratory measures accounted for a significant but very low proportion of variance (between 5% and 21%) in real-life measures. <br><br>CONCLUSION. In older adults without mobility impairments, capacity-related measures of mobility bear little significance for predicting real-life performance. Hence, other factors play a role in how older people manage their daily-life mobility. This should be considered for diagnosis and treatment of mobility deficits in older people.<p /> <p>Language: en</p>",
language="en",
issn="2314-6133",
doi="10.1155/2016/3261567",
url="http://dx.doi.org/10.1155/2016/3261567"
}