scholarly journals Use of a Portable Inertial Measurement Unit as an Evaluation Method for Supraspinatus Muscle: Proposed Normative Values

Sensors ◽  
2021 ◽  
Vol 21 (22) ◽  
pp. 7723
Author(s):  
Sagrario Pérez-de la Cruz
Keyword(s):  
Range Of Motion ◽  
Evaluation Method ◽  
Measurement Unit ◽  
Normative Values ◽  
Shoulder Abduction ◽  
High Dispersion ◽  
Joint Stability ◽  
Treatment Protocols ◽  
Supraspinatus Muscle ◽  
Injury Recovery

Treatment protocols do not specify an appropriate weight for rehabilitating the shoulder joint. The purpose of this study was to establish normative values for the shoulder abduction range of motion and recommended weights to be used in the rehabilitation process after injury to the supraspinatus muscle. Fifty-eight volunteers were assessed using the DyCare system. A test was conducted by lifting the arm to a 90° angle and having the participants lift different weights. The range of motion was similar for both sexes, suggesting that sex had no influence on this variable. Regarding the use of weights, men did not show as much stability in their movement execution, with a high dispersion seen in values between zero and three kilograms of weight, reaching a maximum weight of six kilograms. However, women showed good joint stability from the beginning of the test, with values that remained constant as weight increased up to a maximum of five kilograms. In conclusion, no major differences were observed in supraspinatus muscle injury recovery according to sex. However, differences were observed in the amount of weight that was necessary and appropriate to allow the participants to recover their muscular strength and avoid relapses.

scholarly journals Progressive Shoulder Abduction Loading is a Crucial Element of Arm Rehabilitation in Chronic Stroke

2009 ◽  
Vol 23 (8) ◽  
pp. 862-869 ◽  
Author(s):  
Michael D. Ellis ◽  
Theresa Sukal-Moulton ◽  
Julius P. A. Dewald
Keyword(s):  
Range Of Motion ◽  
Controlled Study ◽  
Control Group ◽  
Shoulder Abduction ◽  
Crucial Element ◽  
Change Scores ◽  
Arm Rehabilitation ◽  
Work Area ◽  
Supported Work ◽  
Experimental Group

Background. Total reaching range of motion (work area) diminishes as a function of shoulder abduction loading in the paretic arm in individuals with chronic hemiparetic stroke. This occurs when reaching outward against gravity or during transport of an object. Objectives. This study implements 2 closely related impairment-based interventions to identify the effect of a subcomponent of reaching exercise thought to be a crucial element in arm rehabilitation. Methods. A total of 14 individuals with chronic moderate to severe hemiparesis participated in the participant-blinded, randomized controlled study. The experimental group progressively trained for 8 weeks to actively support the weight of the arm, up to and beyond, while reaching to various outward targets. The control group practiced the same reaching tasks with matched frequency and duration with the weight of the arm supported. Work area and isometric strength were measured before and after the intervention. Results. Change scores for work area at 9 loads were calculated for each group. Change scores were significantly larger for the experimental group indicating a larger increase in work area, especially shoulder abduction loads equivalent to those experienced during object transport. Changes in strength were not found within or between groups. Conclusions. Progressive shoulder abduction loading can be utilized to ameliorate reaching range of motion against gravity. Future work should investigate the dosage response of this intervention, as well as test whether shoulder abduction loading can augment other therapeutic techniques such as goal-directed functional task practice and behavioral shaping to enhance real-world arm function.

ACTIVE ANKLE RANGE OF MOTION ASSESSMENT IN ELITE TRACK AND FIELD ATHLETES: NORMATIVE VALUES

2013 ◽  
Vol 47 (10) ◽  
pp. e3.75-e3
Author(s):  
Nikolaos Malliaropoulos ◽  
Dimitra Mertyri ◽  
Konstantinos Tsitas ◽  
Agapi Papalada ◽  
Nicola Maffuli
Keyword(s):  
Range Of Motion ◽  
Track And Field ◽  
Normative Values ◽  
Motion Assessment

Serial Changes in 3-Dimensional Supraspinatus Muscle Volume After Rotator Cuff Repair

2017 ◽  
Vol 45 (10) ◽  
pp. 2345-2354 ◽  
Author(s):  
Seok Won Chung ◽  
Kyung-Soo Oh ◽  
Sung Gyu Moon ◽  
Na Ra Kim ◽  
Ji Whan Lee ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Rotator Cuff Repair ◽  
Muscle Volume ◽  
Shoulder Abduction ◽  
Volume Changes ◽  
3 Dimensional ◽  
Supraspinatus Muscle ◽  
Semiautomatic Segmentation ◽  
Cuff Repair ◽  
Area And Volume

Background: There is considerable debate on the recovery of rotator cuff muscle atrophy after rotator cuff repair. Purpose: To evaluate the serial changes in supraspinatus muscle volume after rotator cuff repair by using semiautomatic segmentation software and to determine the relationship with functional outcomes. Study Design: Case series; Level of evidence, 4. Methods: Seventy-four patients (mean age, 62.8 ± 8.8 years) who underwent arthroscopic rotator cuff repair and obtained 3 consecutive (preoperatively, immediately postoperatively, and later postoperatively [≥1 year postoperatively]) magnetic resonance imaging (MRI) scans having complete Y-views were included. We generated a 3-dimensional (3D) reconstructed model of the supraspinatus muscle by using in-house semiautomatic segmentation software (ITK-SNAP) and calculated both the 2-dimensional (2D) cross-sectional area and 3D volume of the muscle in 3 different views (Y-view, 1 cm medial to the Y-view [Y+1 view], and 2 cm medial to the Y-view [Y+2 view]) at the 3 time points. The area and volume changes at each time point were evaluated according to repair integrity. Later postoperative volumes were compared with immediately postoperative volumes, and their relationship with various clinical factors and the effect of higher volume increases on range of motion, muscle power, and visual analog scale pain and American Shoulder and Elbow Surgeons scores were evaluated. Results: The interrater reliabilities were excellent for all measurements. Areas and volumes increased immediately postoperatively as compared with preoperatively; however, only volumes on the Y+1 view and Y+2 view significantly increased later postoperatively as compared with immediately postoperatively ( P < .05). There were 9 patients with healing failure, and area and volume changes were significantly less later postoperatively compared with immediately postoperatively at all measurement points in these patients ( P < .05). After omitting the patients with healing failure, volume increases later postoperatively became more prominent ( P < .05) in the order of the Y+2 view, Y+1 view, and Y-view. Volume increases were higher in patients who healed successfully with larger tears ( P = .040). Higher volume increases were associated only with an increase in abduction power ( P = .029) and not with other outcomes. Conclusion: The supraspinatus muscle volume increased immediately postoperatively and continuously for at least 1 year after surgery. The increase was evident in patients who had larger tears and healed successfully and when measured toward the more medial portion of the supraspinatus muscle. The volume increases were associated with an increase in shoulder abduction power.

scholarly journals Chronic Effects of Different Resistance Training Exercise Orders on Flexibility in Elite Judo Athletes

2014 ◽  
Vol 40 (1) ◽  
pp. 129-137 ◽  
Author(s):  
Alam R. Saraiva ◽  
Victor M. Reis ◽  
Pablo B. Costa ◽  
Claudio M. Bentes ◽  
Gabriel V. Costa e Silva ◽  
...  
Keyword(s):  
Resistance Training ◽  
Range Of Motion ◽  
Repeated Measures ◽  
Lower Limbs ◽  
Shoulder Abduction ◽  
Upper Limbs ◽  
Trunk Flexion ◽  
Resistance Training Program ◽  
Judo Athletes ◽  
Hip Flexion

Abstract The aim of this study was to examine the effects of twelve weeks of resistance training with different exercise orders (upper limbs and lower limbs vs. lower limbs and upper limbs) on flexibility levels in elite judo athletes. Thirtynine male athletes were randomly divided into 3 groups as follows: G1 (n = 13), G2 (n = 13), and CG (n = 13). The flexibility was assessed on 8 joint movements: shoulder flexion and shoulder extension, shoulder abduction and shoulder adduction, trunk flexion and trunk extension, and hip flexion and hip extension. Two-way repeated measures ANOVAs (time [pre-experimental vs. post-experimental] × group [G1 vs. G2 vs. CG]) were used to compare the differences between pre- and post-test situations and the differences among groups. The results from the within-group (pre vs. post) comparisons demonstrated significant increases (p < 0.05) in the range of motion of 3.93 and 5.96% for G1 and G2 training groups, respectively, in all joints. No significant changes (p > 0.05) were observed for the CG. The results from the between-group comparisons demonstrated no significant differences (p > 0.05) in the range of motion between G1post vs. G2post (1.15%). Although both exercise orders (from upper to lower limbs and from lower to upper limbs) increased flexibility, no significant variations were observed between the different exercise orders. Nevertheless, these findings demonstrate that flexibility gains could be obtained with a resistance training program, and thus, more time can be devoted to sports-specific judo training.

scholarly journals Quantifying Real-World Upper-Limb Activity Via Patient-Initiated Movement After Nerve Reconstruction for Upper Brachial Plexus Injury

Neurosurgery ◽  
2018 ◽  
Vol 85 (3) ◽  
pp. 369-374
Author(s):  
Brandon W Smith ◽  
Kate W-C Chang ◽  
Serena J Saake ◽  
Lynda J-S Yang ◽  
Kevin C Chung ◽  
...  
Keyword(s):  
Pilot Study ◽  
Brachial Plexus ◽  
Range Of Motion ◽  
Real World ◽  
Functional Outcomes ◽  
Brachial Plexus Injury ◽  
Nerve Transfer ◽  
Shoulder Abduction ◽  
Patient Reported ◽  
Motion Detectors

Abstract BACKGROUND A critical concept in brachial plexus reconstruction is the accurate assessment of functional outcomes. The current standard for motor outcome assessment is clinician-elicited, outpatient clinic-based, serial evaluation of range of motion and muscle power. However, discrepancies exist between such clinical measurements and actual patient-initiated use. We employed emerging technology in the form of accelerometry-based motion detectors to quantify real-world arm use after brachial plexus surgery. OBJECTIVE To evaluate (1) the ability of accelerometry-based motion detectors to assess functional outcome and (2) the real-world arm use of patients after nerve transfer for brachial plexus injury, through a pilot study. METHODS Five male patients who underwent nerve transfer after brachial plexus injury wore bilateral motion detectors for 7 d. The patients also underwent range-of-motion evaluation and completed multiple patient-reported outcome surveys. RESULTS The average age of the recruits was 41 yr (±17 yr), and the average time from operation was 2 yr (±1 yr). The VT (time of use ratio) for the affected side compared to the unaffected side was 0.73 (±0.27), and the VM (magnitude ratio) was 0.63 (±0.59). VT strongly and positively correlated with shoulder flexion and shoulder abduction: 0.97 (P = .008) and 0.99 (P = .002), respectively. CONCLUSION Accelerometry-based activity monitors can successfully assess real-world functional outcomes after brachial plexus reconstruction. This pilot study demonstrates that patients after nerve transfer are utilizing their affected limbs significantly in daily activities and that recovery of shoulder function is critical.

scholarly journals Estimation and analysis of particles from seeds of maximiliana maripa (aubl.) drude (arecaceae)

2020 ◽  
Vol 13 (10) ◽  
pp. 28
Author(s):  
C. B. M. Farias ◽  
A. Arrolho ◽  
M. C. M. Silva ◽  
R. R. Cruz ◽  
L. P. N. Ramos ◽  
...  
Keyword(s):  
Image Analysis ◽  
Digital Image ◽  
Evaluation Method ◽  
High Dispersion ◽  
Seed Length ◽  
Automatic Mode ◽  
Low Correlation ◽  
Imagej Software ◽  
Maximiliana Maripa ◽  
Digital Caliper

The present work aims to estimate the length and width of the seeds, through the analysis of digital images and to validate the methodology through statistical data. To estimate the length and width of seeds via image analysis, 50 M.maripa seeds were used. The seeds were arranged in a decreasing way from 1 to 25 diagonally, on a matte black fabric, on a phenotyping platform, with a Sony Hd Avchd progressive digital Gps camera, coupled at a height of 50 cm. The images were captured by the camera in automatic mode, without flash, automatic ISO speed, in an RGB system and with a size above 2Mb. Soon after the seeds passed the traditional evaluation method with the aid of a digital caliper, measured in terms of length and width. The images were analyzed with the ImageJ software. Statistical analyzes were performed with the aid of the Sigmaplot program. The results of the length and width of the seeds of Inajá seen by the caliper and digital image via camera, were very distant, showing high dispersion and low correlation r = 0.4037 and R² = 0.1629 for length and r = 0.2985 and R² = 0.0891, showing that the Compared data had little similarity. The error between both the methodology was considered low: 3,81063 and 3,769 for the variables of seed length and width. The method of analysis by digital image and caliper for estimating the length and width of Maximiliana maripa seeds showed a low correlation between the two methodologies. The use of image analysis to estimate the length and width of M. maripa seeds is not indicated.

scholarly journals Indoor Localization of Quadcopters in Industrial Environment

2020 ◽  
Author(s):  
Péter Troll ◽  
Károly Szipka ◽  
Andreas Archenti
Keyword(s):  
Computer Vision ◽  
Material Handling ◽  
Evaluation Method ◽  
Indoor Localization ◽  
Research Work ◽  
Fine Tuning ◽  
Measurement Unit ◽  
Positioning System ◽  
Estimation System ◽  
Slam Algorithm

The research work in this paper was carried out to reach advanced positioning capabilities of unmanned aerial vehicles (UAVs) for indoor applications. The paper includes the design of a quadcopter and the implementation of a control system with the capability to position the quadcopter indoor using onboard visual pose estimation system, without the help of GPS. The project also covered the design and implementation of quadcopter hardware and the control software. The developed hardware enables the quadcopter to raise at least 0.5kg additional payload. The system was developed on a Raspberry single-board computer in combination with a PixHawk flight controller. OpenCV library was used to implement the necessary computer vision. The Open-source software-based solution was developed in the Robotic Operating System (ROS) environment, which performs sensor reading and communication with the flight controller while recording data about its operation and transmits those to the user interface. For the vision-based position estimation, pre-positioned printed markers were used. The markers were generated by ArUco coding, which exactly defines the current position and orientation of the quadcopter, with the help of computer vision. The resulting data was processed in the ROS environment. LiDAR with Hector SLAM algorithm was used to map the objects around the quadcopter. The project also deals with the necessary camera calibration. The fusion of signals from the camera and from the IMU (Inertial Measurement Unit) was achieved by using Extended Kalman Filter (EKF). The evaluation of the completed positioning system was performed with an OptiTrack optical-based external multi-camera measurement system. The introduced evaluation method has enough precision to be used to investigate the enhancement of positioning performance of quadcopters, as well as fine-tuning the parameters of the used controller and filtering approach. The payload capacity allows autonomous material handling indoors. Based on the experiments, the system has an accurate positioning system to be suitable for industrial application.

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