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<field name="value">Simón Vicente, Lucía</field>
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<field name="value">Rodríguez Fernández, Alejandro</field>
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<field name="value">Rivadeneyra Posadas, Jéssica Jannett</field>
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<field name="value">Soto Célix, María .</field>
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<field name="value">Raya-González, Javier</field>
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<field name="value">Castillo, Daniel</field>
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<field name="value">García Bustillo, Álvaro</field>
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<field name="value">Aguado, Laura</field>
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<field name="value">Cubo Delgado, Esther</field>
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<field name="orcid_id">0000-0003-0018-1182</field>
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<field name="value">2024-03-20T11:19:13Z</field>
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<field name="value">2024-03-20T11:19:13Z</field>
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<field name="value">2024-03</field>
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<field name="value">0966-6362</field>
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<field name="value">http://hdl.handle.net/10259/8857</field>
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<field name="value">10.1016/j.gaitpost.2024.01.028</field>
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<field name="value">Background: Consumer and research activity monitors have become popular because of their ability to quantify&#xd;
energy expenditure (EE) in free-living conditions. However, the accuracy of activity trackers in determining EE in&#xd;
people with Huntington’s Disease (HD) is unknown.&#xd;
Research question:&#xd;
Can the ActiGraph wGT3X-B or the Fitbit Charge 4 accurately measure energy expenditure during physical&#xd;
activity, in people with HD compared to Indirect Calorimetry (IC) (Medisoft Ergo Card)?&#xd;
Methods: We conducted a cross-sectional, observational study with fourteen participants with mild-moderate HD&#xd;
(mean age 55.7 ± 11.4 years). All participants wore an ActiGraph and Fitbit during an incremental test, running&#xd;
on a treadmill at 3.2 km/h and 5.2 km/h for three minutes at each speed. We analysed and compared the accuracy of EE estimates obtained by Fitbit and ActiGraph against the EE estimates obtained by a metabolic cart,&#xd;
using with Intra-class correlation (ICC), Bland-Altman analysis and correlation tests.&#xd;
Results: A significant correlation and a moderate reliability was found between ActiGraph and IC for the incremental test (r = 0.667)(ICC=0.633). There was a significant correlation between Fitbit and IC during the incremental test (r = 0.701), but the reliability was poor at all tested speeds in the treadmill walk. Fitbit&#xd;
significantly overestimated EE, and ActiGraph underestimated EE compared to IC, but ActiGraph estimates were&#xd;
more accurate than Fitbit in all tests.&#xd;
Significance: Compared to IC, Fitbit Charge 4 and ActiGraph wGT3X-BT have reduced accuracy in estimating EE&#xd;
at slower walking speeds. These findings highlight the need for population-specific algorithms and validation of&#xd;
activity trackers.</field>
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<field name="value">The research leading to these results has received funding from “la Caixa” Foundation and Caja de Burgos Foundation, under agreement LCF/PR/PR18/51130008".</field>
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<field name="value">Gait &amp; Posture. 2024, V. 109, p. 89-94</field>
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<field name="value">Health promotion</field>
<field name="value">Physical activity</field>
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<field name="value">Validation</field>
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<field name="value">Validation of ActiGraph and Fitbit in the assessment of energy expenditure in Huntington's disease</field>
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<field name="value">109</field>
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