iPhone Sensors in Tracking Outcome Variables of the 30-Second Chair Stand Test and Stair Climb Test to Evaluate Disability: Cross-Sectional Pilot Study

JMIR MHealth and UHealth
Gautam AdusumilliSharmila Majumdar

Abstract

Performance tests are important to characterize patient disabilities and functional changes. The Osteoarthritis Research Society International and others recommend the 30-second Chair Stand Test and Stair Climb Test, among others, as core tests that capture two distinct types of disability during activities of daily living. However, these two tests are limited by current protocols of testing in clinics. There is a need for an alternative that allows remote testing of functional capabilities during these tests in the osteoarthritis patient population. Objectives are to (1) develop an app for testing the functionality of an iPhone's accelerometer and gravity sensor and (2) conduct a pilot study objectively evaluating the criterion validity and test-retest reliability of outcome variables obtained from these sensors during the 30-second Chair Stand Test and Stair Climb Test. An iOS app was developed with data collection capabilities from the built-in iPhone accelerometer and gravity sensor tools and linked to Google Firebase. A total of 24 subjects performed the 30-second Chair Stand Test with an iPhone accelerometer collecting data and an external rater manually counting sit-to-stand repetitions. A total of 21 subjects performed ...Continue Reading

References

Jun 1, 2010·Archives of Physical Medicine and Rehabilitation·Gustavo J AlmeidaSara R Piva
Jun 21, 2011·Lancet·Johannes W J BijlsmaFloris P J G Lafeber
Oct 20, 2011·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Henning MadryAndrea Facchini
Dec 11, 2013·Arthritis Research & Therapy·Guangyi LiMing H Zheng
Jan 15, 2015·Revista brasileira de reumatologia·Luís Cunha-MirandaSandra Barbosa
Mar 19, 2015·Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine·Lori Thein Brody
Aug 19, 2015·Circulation. Heart Failure·Gabriel C BrooksJeffrey E Olgin
May 11, 2016·Seminars in Arthritis and Rheumatism·Benedikt J SchwaigerSharmila Majumdar
Oct 27, 2016·PM & R : the Journal of Injury, Function, and Rehabilitation·Michael A SamaanRichard B Souza

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Citations

Jul 11, 2021·Nutrition in Clinical Practice : Official Publication of the American Society for Parenteral and Enteral Nutrition·Manpreet S MundiRyan T Hurt
Jul 11, 2021·Academic Emergency Medicine : Official Journal of the Society for Academic Emergency Medicine·Emily M HaydenUNKNOWN Society for Academic Emergency Medicine 2020 Consensus Conference

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Software Mentioned

6MWT
iOS
Core Motion
Excel
FirebaseAuth frameworks
SPSS
XCode
Swift
app
MATLAB

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