scholarly journals Unobtrusive Sensors for the Assessment of Older Adult’s Frailty: A Scoping Review

Sensors ◽  
2021 ◽  
Vol 21 (9) ◽  
pp. 2983
Author(s):  
Antonio Cobo ◽  
Elena Villalba-Mora ◽  
Rodrigo Pérez-Rodríguez ◽  
Xavier Ferre ◽  
Leocadio Rodríguez-Mañas
Keyword(s):  
Older Adults ◽  
Scoping Review ◽  
Web Of Science ◽  
Daily Activities ◽  
Inertial Measurement Units ◽  
Inertial Measurement ◽  
Monitoring Applications ◽  
Healthcare Monitoring ◽  
Measurement Units ◽  
Hospitalized Older Adults

Ubiquity (devices becoming part of the context) and transparency (devices not interfering with daily activities) are very significant in healthcare monitoring applications for elders. The present study undertakes a scoping review to map the literature on sensor-based unobtrusive monitoring of older adults’ frailty. We aim to determine what types of devices comply with unobtrusiveness requirements, which frailty markers have been unobtrusively assessed, which unsupervised devices have been tested, the relationships between sensor outcomes and frailty markers, and which devices can assess multiple markers. SCOPUS, PUBMED, and Web of Science were used to identify papers published 2010–2020. We selected 67 documents involving non-hospitalized older adults (65+ y.o.) and assessing frailty level or some specific frailty-marker with some sensor. Among the nine types of body worn sensors, only inertial measurement units (IMUs) on the waist and wrist-worn sensors comply with ubiquity. The former can transparently assess all variables but weight loss. Wrist-worn devices have not been tested in unsupervised conditions. Unsupervised presence detectors can predict frailty, slowness, performance, and physical activity. Waist IMUs and presence detectors are the most promising candidates for unobtrusive and unsupervised monitoring of frailty. Further research is necessary to give specific predictions of frailty level with unsupervised waist IMUs.

scholarly journals Wavelet-based algorithm for auto-detection of daily living activities of older adults captured by multiple inertial measurement units (IMUs)

2016 ◽  
Vol 37 (3) ◽  
pp. 442-461 ◽  
Author(s):  
Fouaz S Ayachi ◽  
Hung P Nguyen ◽  
Catherine Lavigne-Pelletier ◽  
Etienne Goubault ◽  
Patrick Boissy ◽  
...  
Keyword(s):  
Older Adults ◽  
Daily Living ◽  
Inertial Measurement Units ◽  
Daily Living Activities ◽  
Inertial Measurement ◽  
Measurement Units

scholarly journals Gait Variability Using Waist- and Ankle-Worn Inertial Measurement Units in Healthy Older Adults

Sensors ◽  
2020 ◽  
Vol 20 (10) ◽  
pp. 2858 ◽  
Author(s):  
Timo Rantalainen ◽  
Laura Karavirta ◽  
Henrikki Pirkola ◽  
Taina Rantanen ◽  
Vesa Linnamo
Keyword(s):  
Older Adults ◽  
Correlation Coefficient ◽  
Concurrent Validity ◽  
Force Plate ◽  
Gait Variability ◽  
Inertial Measurement Units ◽  
Healthy Older Adults ◽  
Inertial Measurement ◽  
Measurement Units ◽  
Stride Duration

Gait variability observed in step duration is predictive of impending adverse health outcomes among apparently healthy older adults and could potentially be evaluated using wearable sensors (inertial measurement units, IMU). The purpose of the present study was to establish the reliability and concurrent validity of gait variability and complexity evaluated with a waist and an ankle-worn IMU. Seventeen women (age 74.8 (SD 44) years) and 10 men (73.7 (4.1) years) attended two laboratory measurement sessions a week apart. Their stride duration variability was concurrently evaluated based on a continuous 3 min walk using a force plate and a waist- and an ankle-worn IMU. Their gait complexity (multiscale sample entropy) was evaluated from the waist-worn IMU. The force plate indicated excellent stride duration variability reliability (intra-class correlation coefficient, ICC = 0.90), whereas fair to good reliability (ICC = 0.47 to 0.66) was observed from the IMUs. The IMUs exhibited poor to excellent concurrent validity in stride duration variability compared to the force plate (ICC = 0.22 to 0.93). A good to excellent reliability was observed for gait complexity in most coarseness scales (ICC = 0.60 to 0.82). A reasonable congruence with the force plate-measured stride duration variability was observed on many coarseness scales (correlation coefficient = 0.38 to 0.83). In conclusion, waist-worn IMU entropy estimates may provide a feasible indicator of gait variability among community-dwelling ambulatory older adults.

scholarly journals The use of inertial measurement units for analyzing change of direction movement in sports: A scoping review

2021 ◽  
pp. 174795412110030
Author(s):  
 AM Alanen ◽  
AM Räisänen ◽  
LC Benson ◽  
K Pasanen
Keyword(s):  
Scoping Review ◽  
Grey Literature ◽  
Measurement Unit ◽  
Future Research ◽  
Inertial Measurement Units ◽  
Validity And Reliability ◽  
Inertial Measurement ◽  
Change Of Direction ◽  
Measurement Units ◽  
Ebsco Host

Change of direction movement is common in sports and the ability to perform this complex movement efficiently is related to athlete's performance. Wearable devices have been used to evaluate aspects of change of direction movement, but so far there are no clear recommendations on specific metrics to be used. The aims of this scoping review were to evaluate the reliability and validity of inertial measurement unit sensors to provide information on change of direction movement and to summarize the available evidence on inertial measurement units in analyzing change of direction movement in sports. A systematic search was employed in MEDLINE (Ovid), CINAHL (EBSCO host), SPORTDiscus (EBSCO host), EMBASE and Cochrane Database of Systematic Reviews and Web of Science to identify eligible studies. A complementary grey literature search was employed to locate non-peer reviewed studies. The risk of bias of the studies evaluating validity and/or reliability was evaluated using the AXIS tool. The initial search identified 15,165 studies. After duplicate removal and full-text screening 49 studies met the inclusion criteria, with 11 studies evaluating validity and/or reliability. There are promising results on the validity and reliability, but the number of studies is still small and the quality of the studies is limited. Most of the studies were conducted with pre-planned movements and participants were usually adult males. Varying sensor locations limits the ability to generalize these findings. Inertial measurement units (IMU) can be used to detect change of direction (COD) movements and COD heading angles with acceptable validity, but IMU measured or derived kinetic or kinematic variables present inconsistency and over-estimation. Studies can be improved with larger sample sizes and agreement on the metrics used and sensor placement. Future research should include more on-field studies.

Sign in / Sign up

Export Citation Format

Share Document