A Comparison of Four Approaches to Evaluate the Sit-to-Stand Movement
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Citations
Sit-To-Stand Movement Evaluated Using an Inertial Measurement Unit Embedded in Smart Glasses—A Validation Study
Learning and fusing multiple hidden substages for action quality assessment
Sit-to-stand and Stand-to-sit Activities Recognition by Visible Light Sensing
A Novel Simplified System to Estimate Lower-Limb Joint Moments during Sit-to-Stand.
References
Can an accelerometer enhance the utility of the Timed Up & Go Test when evaluating patients with Parkinson's disease?
The five-times-sit-to-stand test: validity, reliability and detectable change in older females.
Assessing the Quality of Actions
Reducing fall risk in the elderly: risk factors and fall prevention, a systematic review.
Sit-to-stand test to evaluate knee extensor muscle size and strength in the elderly: a novel approach.
Related Papers (5)
Frequently Asked Questions (11)
Q2. What is the recent introduction of the Stacked Hourglass Network method?
With the advent of deep-learning techniques, many solutions to human pose estimation have been introduced, such as the recentlyintroduced Stacked Hourglass Network method [24].
Q3. Why was the use of a stopwatch chosen as the gold standard for STS time?
The use of an expert assessment of the video as the gold-standard for STS time was chosen rather than a stopwatch, as previous research has reported errors due to delays in starting the stopwatch after the command was given to start being included in the time, while errors also occur when stopping the timer [13].
Q4. What is the method used to estimate the power produced during the STS?
It would also be possible to estimate the power produced during the STS using the method proposed by Lindemann et al., in which the difference between seated height and standing height is combined with the rate of force development to estimate power [32].
Q5. What was the mean force of the STS for the two camera-based systems?
STS velocity was calculated for the two camera-based systems using the method proposed by Ejupi et al. [15] for the period between the end of the sitting phase and the standing phase of each STS movement.
Q6. What was the mean force of the sit-to-stand phase?
For the force plate, the start of each sit-to-TNSRE-2019-003524stand phase was taken to be 10% of the peak force obtained during the transition to a standing position, which corresponds to the same ratio as the 5cm value used for the two camerabased systems when compared to the mean standing height of 50 cm.
Q7. How long did the 5STS take to detect the error?
The error of the chair method was less than 10% of the minimal detectable change for the 5STS, which has been reported to be 2.5 seconds [29].
Q8. What is the way to estimate muscle mass?
Power during the STS is a strong predictor of overall muscle power and even cross-sectional area of the quadriceps [33, 34], which means the instrumented chair might be able to estimate muscle mass.
Q9. What is the way to capture the right description of human joints?
In order to capture the right description of human joints, the images are analyzed at different scales, with a low-level resolution for joints and a high-level resolution for orientation.
Q10. What is the highest correlation with gait velocity?
The highest correlation with gait velocity was obtained for chair STS velocity (r=0.76), followed by the force plate (r=0.49), RGB camera (r=0.12), and the Kinect (r=0.07).
Q11. What was the way to measure the STS?
Although the observed relationship between STS velocity and gait velocity was encouraging, it would have been useful to have measures of leg strength for the older subjects rather than using gait velocity as a proxy measure.