TY  - JOUR
PY  - 2024//
TI  - Validation of gait analysis using smartphones: reliability and validity
JO  - Digital health
A1  - Sun, Yan
A1  - Kong, Liwen
A1  - Zhang, Hao
A1  - Tao, Shuai
A1  - Zhao, Jie
SP  - e20552076241257054
EP  - e20552076241257054
VL  - 10
IS  - 
N2  - OBJECTIVE: This study aims to validate the reliability and validity of gait analysis using smartphones in a controlled environment. <br><br>METHODS: Thirty healthy adults attached smartphones to the waist and thigh, while an inertial measurement unit was fixed at the shank as a reference device; each participant was asked to walk six gait cycles at self-selected low, normal, and high speeds. Thirty-five cerebral small vessel disease patients were recruited to attach the smartphone to the thigh, performing single-task (ST), cognitive dual-task (DT(1)), and physical dual-task walking (DT(2)) to obtain gait parameters. <br><br>RESULTS: The results from the healthy group indicate that, regardless of whether attached to the thigh or waist, the smartphones calculated gait parameters with good reliability (ICC(2,1) > 0.75) across three different walking speeds. There were no significant differences in the gait parameters between the smartphone attached to the thigh and the IMU across all three walking speeds (P > 0.05). However, significant differences were observed between the smartphone at the waist and the IMU during the stance phase, swing phase, stance time, and stride length at high speeds (P < 0.05). At the same time, measurements of other gait parameters were similar (P > 0.05). Patients demonstrated significant differences in the cadence, stride time, stance phase, swing phase, stance time, stride length, and walking speed between ST and DT(1) (P < 0.05). Significant differences were observed in the stance phase, swing phase, stride length, and walking speed between ST and DT(2) (P < 0.05). <br><br>CONCLUSIONS: This study demonstrates the feasibility of using built-in smartphone sensors for gait analysis in a controlled environment.<p />  <p>Language: en</p>
LA  - en
SN  - 2055-2076
UR  - http://dx.doi.org/10.1177/20552076241257054
ID  - ref1
ER  -