Absolute and relative reliability of several measures of static postural stability calculated using a GYKO inertial sensor system

Jaworski, Janusz; Ambroży, Tadeusz; Lech, Grzegorz; Spieszny, Michał; Bujas, Przemysław; Žák, Michal; Chwała, Wiesław

doi:10.37190/abb-01502-2019-02

Cited by 20 publications

(17 citation statements)

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“…overall, the total balance score reliability appears similar to other smartphone applications; Amick et al [14] report excellent relative reliability with Iccs of 0.78 (SEM: 5.82) in standing tasks (full contact with the floor, double or single leg standing, 2 trials) using the Sway balance mobile application. Good to excellent relative reliability Icc indices are also reported for postural stability assessments with accelerometers (Icc: 0.62-0.71 [10], Icc: 0.736-0.972 [12]).…”

Section: Discussionmentioning

confidence: 90%

“…overall, taken an adequate number of trials, the results encourage the use of a smartphone application for testing standing postural stability in ballet dancers. this approach employs a low-cost and of high-portability tool for field assessment compared with expensive and of limited-portability laboratory equipment such as the force plate gold standard [2,7,26], accelerometers [3,7,[10][11][12], or a motion capture system [6,8,9].…”

Section: Discussionmentioning

confidence: 99%

“…the gold standard of postural stability evaluation in a laboratory setting is the force plate in general population studies [7] but also among ballet dancers [2,5], followed by elaborated motion capture systems [6,8,9]. In recent years, wearable sensors based on miniaturized inertial measurement units (typically including accelerometers and gyroscopes) have increasingly been used in postural stability studies [7,[10][11][12], ballet dancers studies inclusive [3,13].…”

Section: Introductionmentioning

confidence: 99%

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Reliability of assessing ballet dancers’ postural stability in the unshod and the en pointe relevé position with a smartphone application

Paderi¹,

Emmanouil²,

Rousanoglou³

2021

Hum Mov.

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Purpose. this study aimed to verify the reliability of estimating ballet dancers' postural stability during the unshod and the en pointe relevé position with a smartphone application Methods. the participants (13 ballet dancers, 22.4 ± 2.5 years of age) were tested in the unshod and the en pointe relevé position (YMED Balance test application, smartphone secured at the L5 level for centre of mass approximation, 10 trials for each condition, 10 seconds per trial, 2-minute intertrial break, arms relaxed at bodyside, gaze fixated at an eye-level target, preferred feet width and orientation). Paired t-tests examined the inter-condition differences. relative (intraclass correlation coefficient, Icc) and absolute (standard error of measurement, SEM, SEM%) reliability indices (for accumulated and paired trials) were computed for each condition (SPSS software v. 26.0, p < 0.05). Results. the total balance score and all centre of mass spatial measures indicated worse postural stability in the en pointe condition (p < 0.05), with no significant temporal differences (p > 0.05). the total body balance score was the most reliable measure (good to excellent Iccs, low to moderate SEM%) with a minimum of 8 trials ensuring reliability in both the unshod and the en pointe relevé positions. Conclusions. taken a minimum of 8 trials and the measure of total balance score, we may obtain a reliable estimation of ballet dancers' postural stability in the unshod and the en pointe relevé position by using the YMED Balance test smartphone application.

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Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Reliability of assessing ballet dancers’ postural stability in the unshod and the en pointe relevé position with a smartphone application

Paderi¹,

Emmanouil²,

Rousanoglou³

2021

Hum Mov.

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“…It determines three main measures of body sway: sway length and area, sway travel speed and sway frequency. Recent study by Jaworski et al 74 showed moderate to good relative reliability scores for all the postural stability measures, with ICC values ranging from 0.62 to 0.70. For most of the analysed variables, SEM% ranged from ~10% to 14%.…”

Section: Methods and Analysismentioning

confidence: 92%

Simultaneous measurement of centre of pressure and centre of mass in assessing postural sway in healthcare workers with non-specific back pain: protocol for a cross-sectional study

et al. 2021

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IntroductionLow back pain (LBP) is widely prevalent in healthcare workers. It is associated with impaired postural and core stability. So far, centre of pressure (CoP) measures have been commonly recorded through the use of a force plate in order to assess postural stability. However, this approach provides limited information about the centre of mass (CoM) movement in the lumbar region in individuals with LBP. Recent developments in sensor technology enable measurement of the trunk motion which could provide additional information on postural sway. However, the question remains as to whether CoM measures would be more sensitive in discriminating individuals with mild and moderate back pain than traditional CoP analyses. This study aims to investigate the sensitivity of CoP and CoM measures under varied stable, metastable and unstable testing conditions in healthcare workers, and their relationship with the level of subjective reported back pain.Methods and analysisThis is a cross-sectional controlled laboratory study. A group of 90 healthcare professionals will be recruited from rehabilitation centres within local areas. Participants will complete the Oswestry Disability Questionnaire. The primary outcome will be the rate of their back pain on the 0–10 Low Back Pain Scale (1–3 mild pain and 4–6 moderate pain). Secondary outcomes will include variables of postural and core stability testing during bipedal and one-legged stance on a force plate, a foam mat placed on the force plate, and a spring-supported platform with either eyes open or eyes closed. Both CoP using the posturography system based on a force plate and CoM using the inertial sensor system placed on the trunk will be simultaneously measured.Ethics and disseminationProjects were approved by the ethics committee of the Faculty of Physical Education and Sport, Comenius University in Bratislava (Nos. 4/2017, 1/2020). Findings will be published in peer-reviewed journals and presented at conferences.

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“…A physical ability detection system (GYKO; Microgate) 26,27 will be used. This system contains a highspeed 3D accelerometer and gyroscope to capture data on 4 aspects: (1) walking and running, where the rocking levels of the torso during walking and running are compared; (2) posture, where the ability of the torso to maintain stability and balance when standing still is monitored;…”

Section: Gykomentioning

confidence: 99%

Evaluating Effectiveness of Fu’s Subcutaneous Needling for the Pain Nature and Quality of Life in Patients with Knee Osteoarthritis: A Study Protocol of Randomized Clinical Trial

Chiu¹,

Fu²,

Jian³

et al. 2021

JPR

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Background: Knee osteoarthritis (OA) is a common clinical disease. Knee pain is the major symptom of knee OA and the primary reason why patients seek treatment. Fu's subcutaneous needling (FSN) has been used to treat knee OA for more than 20 years. However, the establishment of treatment methods and rigorous evaluation of FSN's efficacy are still lacking. A randomized single-blind clinical trial will be conducted to evaluate whether FSN treatment can immediately alleviate pain due to knee OA surrounding the patella and the curative effective of 1-week and 2-week treatments. In addition, the feasibility and initial effect of FSN treatment for patients with knee OA will be discussed. Materials and Methods: Patients with confirmed knee OA, as diagnosed by doctors using X-ray films or from clinical symptoms, who are over 50 years old will be participants recruited. They will be randomly assigned either FSN treatment or transcutaneous electrical nerve stimulation treatment. In addition, their pressure pain threshold, muscle tone of lower leg muscle, and physical ability will be measured. Participants will be asked to complete the questionnaires of Western Ontario and McMaster Universities Osteoarthritis Index and Lequesne' index as the measurements for quality of life. Results:The findings of this study will reveal whether FSN or transcutaneous electrical nerve stimulation is clinically efficacious for treating pain due to knee OA, with respect to muscle stiffness, gait, dynamic balance, the pressure pain threshold, and quality of life before and after treatment.

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Absolute and relative reliability of several measures of static postural stability calculated using a GYKO inertial sensor system

Cited by 20 publications

References 0 publications

Reliability of assessing ballet dancers’ postural stability in the unshod and the en pointe relevé position with a smartphone application

Reliability of assessing ballet dancers’ postural stability in the unshod and the en pointe relevé position with a smartphone application

Simultaneous measurement of centre of pressure and centre of mass in assessing postural sway in healthcare workers with non-specific back pain: protocol for a cross-sectional study

Evaluating Effectiveness of Fu’s Subcutaneous Needling for the Pain Nature and Quality of Life in Patients with Knee Osteoarthritis: A Study Protocol of Randomized Clinical Trial

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