Reliability of joint position sense measured in the knee using the level function of the iPhone "Measure" application.

Reliability of joint position sense measured in the knee using the level function of the iPhone "Measure" application.

An impaired joint position sense (JPS) causes activity limitations, postural imbalance, and falls. This study compares the reliability of knee JPS measurements between the iPhone's "Measure" application and VICON motion capture system. Eleven healthy participants were recruited for th...

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Autores principales: Yuki Nakashima, Daisuke Iwaki, Toshihiro Kawae, Kenichi Fudeyasu, Hiroaki Kimura
Formato: article
Lenguaje:EN
Publicado: Public Library of Science (PLoS) 2021
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Medicine
R
Science
Q
Acceso en línea:https://doaj.org/article/11a754bebefc48e1bdfc4462a7985259
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spelling oai:doaj.org-article:11a754bebefc48e1bdfc4462a79852592021-12-02T20:19:26ZReliability of joint position sense measured in the knee using the level function of the iPhone "Measure" application.1932-620310.1371/journal.pone.0256561https://doaj.org/article/11a754bebefc48e1bdfc4462a79852592021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0256561https://doaj.org/toc/1932-6203An impaired joint position sense (JPS) causes activity limitations, postural imbalance, and falls. This study compares the reliability of knee JPS measurements between the iPhone's "Measure" application and VICON motion capture system. Eleven healthy participants were recruited for the study. To conduct the study measures, the blindfolded participant, with an iPhone fixed to the lower non-dominant leg, was seated with their lower limbs in a relaxed position. The examiner held the participant's leg at the target angle (30°/60° from initial position) for 5 s before releasing it. The participant was then instructed to move the leg to the same target angle and hold it for 5 s (replicated angle). Absolute angular error (AAE), i.e., the difference between the target and replicated angles, was measured. Intraclass and Pearson correlation coefficients established statistically significant relationships. The study comprised 6 males and 5 females of mean age 27.6±5.6 years, mean height 1.67±0.10 m, and mean body weight 60.7±10.3 kg. Strong correlations existed between iPhone and VICON 30° (ICC = 0.969, r = 0.960, P < 0.001) and 60° AAEs (ICC 0.969, r = 0.960, P < 0.001). Bland-Altman plots showed a mean difference of 0.43° and 0.20° between the AAE measurements at 30° and 60°, respectively. The iPhone's "Measure" application is a simple and reliable method for measuring JPS in clinical practice and sports/fitness settings.Yuki NakashimaDaisuke IwakiToshihiro KawaeKenichi FudeyasuHiroaki KimuraPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 8, p e0256561 (2021)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Yuki Nakashima
Daisuke Iwaki
Toshihiro Kawae
Kenichi Fudeyasu
Hiroaki Kimura
Reliability of joint position sense measured in the knee using the level function of the iPhone "Measure" application.
description An impaired joint position sense (JPS) causes activity limitations, postural imbalance, and falls. This study compares the reliability of knee JPS measurements between the iPhone's "Measure" application and VICON motion capture system. Eleven healthy participants were recruited for the study. To conduct the study measures, the blindfolded participant, with an iPhone fixed to the lower non-dominant leg, was seated with their lower limbs in a relaxed position. The examiner held the participant's leg at the target angle (30°/60° from initial position) for 5 s before releasing it. The participant was then instructed to move the leg to the same target angle and hold it for 5 s (replicated angle). Absolute angular error (AAE), i.e., the difference between the target and replicated angles, was measured. Intraclass and Pearson correlation coefficients established statistically significant relationships. The study comprised 6 males and 5 females of mean age 27.6±5.6 years, mean height 1.67±0.10 m, and mean body weight 60.7±10.3 kg. Strong correlations existed between iPhone and VICON 30° (ICC = 0.969, r = 0.960, P < 0.001) and 60° AAEs (ICC 0.969, r = 0.960, P < 0.001). Bland-Altman plots showed a mean difference of 0.43° and 0.20° between the AAE measurements at 30° and 60°, respectively. The iPhone's "Measure" application is a simple and reliable method for measuring JPS in clinical practice and sports/fitness settings.
format article
author Yuki Nakashima
Daisuke Iwaki
Toshihiro Kawae
Kenichi Fudeyasu
Hiroaki Kimura
author_facet Yuki Nakashima
Daisuke Iwaki
Toshihiro Kawae
Kenichi Fudeyasu
Hiroaki Kimura
author_sort Yuki Nakashima
title Reliability of joint position sense measured in the knee using the level function of the iPhone "Measure" application.
title_short Reliability of joint position sense measured in the knee using the level function of the iPhone "Measure" application.
title_full Reliability of joint position sense measured in the knee using the level function of the iPhone "Measure" application.
title_fullStr Reliability of joint position sense measured in the knee using the level function of the iPhone "Measure" application.
title_full_unstemmed Reliability of joint position sense measured in the knee using the level function of the iPhone "Measure" application.
title_sort reliability of joint position sense measured in the knee using the level function of the iphone "measure" application.
publisher Public Library of Science (PLoS)
publishDate 2021
url https://doaj.org/article/11a754bebefc48e1bdfc4462a7985259
work_keys_str_mv AT yukinakashima reliabilityofjointpositionsensemeasuredinthekneeusingthelevelfunctionoftheiphonemeasureapplication
AT daisukeiwaki reliabilityofjointpositionsensemeasuredinthekneeusingthelevelfunctionoftheiphonemeasureapplication
AT toshihirokawae reliabilityofjointpositionsensemeasuredinthekneeusingthelevelfunctionoftheiphonemeasureapplication
AT kenichifudeyasu reliabilityofjointpositionsensemeasuredinthekneeusingthelevelfunctionoftheiphonemeasureapplication
AT hiroakikimura reliabilityofjointpositionsensemeasuredinthekneeusingthelevelfunctionoftheiphonemeasureapplication
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