TY  - JOUR
A1  - Klotzbier, Thomas J.
A1  - Wollesen, Bettina
A1  - Vogel, Oliver
A1  - Rudisch, Julian
A1  - Cordes, Thomas
A1  - Joellenbeck, Thomas
A1  - Vogt, Lutz
T1  - An interrater reliability study of gait analysis systems with the dual task paradigm in healthy young and older adults
T2  - European review of aging and physical activity
N2  - Background and aims: One reason for the controversial discussion of whether the dual task (DT) walking paradigm has an added value for diagnosis in clinical conditions might be the use of different gait measurement systems. Therefore, the purpose was 1) to detect DT effects of central gait parameters obtained from five different gait analysis devices in young and old adults, 2) to assess the consistency of the measurement systems, and 3) to determine if the absolut and proportional DT costs (DTC) are greater than the system-measurement error under ST. Methods: Twelve old (72.2 ± 7.9y) and 14 young adults (28.3 ± 6.2y) walked a 14.7-m distance under ST and DT at a self-selected gait velocity. Interrater reliability, precision of the measurement and sensitivity to change were calculated under ST and DT. Results: An age effect was observed in almost all gait parameters for the ST condition. For DT only differences for stride length (p < .029, ɳ2p = .239) as well as single and double limb support (p = .036, ɳ2p = .227; p = .034, ɳ2p = .218) remained. The measurement systems showed a lower absolute agreement compared to consistency across all systems. Conclusions: When reporting DT effects, the real changes in performance and random measurement errors should always be accounted for. These findings have strong implications for interpreting DT effects.
KW  - Cognitive-motor interference
KW  - Dual task walking
KW  - Older adults
KW  - Verbal fluency
KW  - Minimal detectable change
KW  - Gait analysis
Y1  - 2021
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/63767
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-637678
SN  - 1861-6909
N1  - Open Access funding enabled and organized by Projekt DEAL.
N1  - The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.
VL  - 18
IS  - art. 17
SP  - 1
EP  - 12
PB  - Springer
CY  - Berlin ; Heidelberg
ER  -