Comparison of the Lumbar Flexion Angle and EMG Activity in Trunk Muscles in Individuals with and without Limited Hip Flexion Range of Motion during Visual Display Terminal Work with Cross-Legged Sitting

Although the effectiveness of static self-stretching exercises (SSSEs) and foam roller self-massaging (FRSM) in joint range of motion and muscle strength of the lower limbs has been extensively investigated, little is known about their effectiveness on the posterior trunk muscles. The present study aimed to investigate the acute effects of two 7-min SSSEs and FRSM intervention protocols on the range of trunk movements and the strength of the trunk extensors. Twenty-five healthy active males (n = 14) and females (n = 11) performed each intervention separately, one week apart. The range of motion (ROM) of the trunk-hip flexion (T-HF), the ROM of the trunk side-flexion (TSF) and rotation (TR) bilaterally, as well as the isometric maximum strength (TESmax) and endurance (TESend) of the trunk extensors were measured before and after each intervention. The ROMs of T-HF, TSF, and TR were significantly increased following both SSSEs and FRSM. The TESmax and TESend were also significantly increased after FRSM, but decreased following SSSEs. While both interventions were effective in increasing the range of motion of the trunk, a single 7-min session of FRSM presented more advantages over a similar duration SSSEs protocol due to the increase in the strength of the trunk extensors it induced.

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Changes in cervical range of motion, flexion-relaxation ratio and pain with visual display terminal work

Work ◽

10.3233/wor-121580 ◽

2014 ◽

Vol 47 (2) ◽

pp. 261-265 ◽

Cited By ~ 10

Author(s):

Seung-Je Shin ◽

Won-Gyu Yoo

Keyword(s):

Range Of Motion ◽

Visual Display ◽

Visual Display Terminal ◽

Cervical Range Of Motion ◽

Flexion Relaxation

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Estimation of EMG activity of trunk muscles in manual lifting tasks based on trunk dynamics using the fuzzy relational rule network

PsycEXTRA Dataset ◽

10.1037/e576972012-022 ◽

2003 ◽

Author(s):

Waldemar Karwowski ◽

Adam Gaweda ◽

William S. Marras ◽

Kermit Davis ◽

Jacek Zurada

Keyword(s):

Trunk Muscles ◽

Emg Activity ◽

Manual Lifting

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Feasibility of an iPhone-based application for knee joint goniometry during gait in a stroke patient (Preprint)

10.2196/preprints.12472 ◽

2018 ◽

Author(s):

Claudia Nava ◽

Patrizio Sale ◽

Vittorio Leggero ◽

Simona Ferrante ◽

Cira Fundaro' ◽

...

Keyword(s):

Range Of Motion ◽

Stroke Patient ◽

Reference Method ◽

Flexion Angle ◽

Good Reliability ◽

Rater Reliability ◽

Maximum Extension ◽

Angle Measurements ◽

Hemiparetic Gait ◽

Flexion Extension

BACKGROUND In recent years, different smartphone apps have been validated for joint goniometry, but none for goniometric assessment of gait after stroke. OBJECTIVE The aims of our work were to assess:1) to assess intra-rater reliability of an image-based goniometric app – DrGoniometer- in the measurement of the extension, flexion angles and range of motion of the knee during the hemiparetic gait of a stroke patient; (2) its validity comparing to the reference method (electrogoniometer) for flexion-extension excursion measurements; and the intra-rater agreement in the choice of the video frames. METHODS An left-hemiparetic inpatient following haemorrhagic stroke was filmed using the app while walking on a linear path. An electrogoniometer was fixed on the medial face of the affected knee in order to record the dynamic goniometry during gait. Twenty-one raters, blinded to measurements, were recruited to rate knee angle measurements from video acquired with DrGoniometer. Each rater repeated the same procedure twice, the second one at least one day after the first measure. RESULTS Results showed that flexion angle measurements are reliable (ICC95%=0.66, 0.34;0.85; SEM=4°), and adequately precise (CV=14%). Extension angles measurements demonstrated moderate reliability and higher degree of variation (ICC=0.51, 0.09;0.77; SEM 4°; CV=53%). ROM values were: ICC=0.23 (-0.21;0.60); CV=20%. Accuracy of DrGoniometer compared to the electrogoniometer was 7.3±4.7°. The selection of maximum extension frame revealed an accordance of 58% and 72% within a range of ±5 or ±10 frames, respectively; while the best flexion frame reported 86% of agreement for both range of 5 and 10 frames. CONCLUSIONS The results demonstrated moderate to good reliability concerning the maximum extension and flexion angles, while assessing ROM DrGoniometer showed poor intra-rater reliability. Flexion angle measurements seemed to be reliable according to ICC and SEM values and more precise with a limited dispersion of results DrGoniometer revealed a good accuracy in the measurement of range of motion. The agreement of the maximal extension frame was anyway adequate within 5 frames (59%) and noticeably increased within 10 frames (72%). In conclusion, DrGoniometer was found to be a valid and reliable method for assessing knee angles during hemiparetic gait. Further studies are necessary to investigate inter-rater reliability and confirm our results.

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EFFICACY OF PRESSURE-BIOFEEDBACK GUIDED DEEP CERVICAL FLEXOR TRAINING ON NECK PAIN AND MUSCLE PERFORMANCE IN VISUAL DISPLAY TERMINAL OPERATORS

Journal of Musculoskeletal Research ◽

10.1142/s0218957713500115 ◽

2013 ◽

Vol 16 (03) ◽

pp. 1350011 ◽

Cited By ~ 4

Author(s):

Md. Nezamuddin ◽

Shahnawaz Anwer ◽

Sohrab Ahmad Khan ◽

Ameed Equebal

Keyword(s):

Neck Pain ◽

Pain Intensity ◽

Exercise Program ◽

Visual Display ◽

Muscle Performance ◽

Control Group ◽

Women Patients ◽

Flexor Muscle ◽

Visual Display Terminal ◽

Pressure Biofeedback

Purpose: This randomized trial study compared the efficacy of pressure-biofeedback guided deep cervical flexor training as an adjunct with conventional exercise on pain and muscle performance in visually displayed terminal operators. Methods: A total of 50 (22 men and 28 women) patients with neck pain participated in the study. Patients were randomly placed into two groups: a biofeedback group (n = 25) and a control group (n = 25). The biofeedback group received pressure-biofeedback guided deep cervical flexor training program for 5 days a week for 6 weeks, whereas the control group received an exercise program only. Results: On intergroup comparisons, the deep cervical flexor performance in biofeedback group, at the end of 6th week was significantly higher than those of control group (p < 0.01). Pain intensity was also significantly reduced in biofeedback group when compared to control group at the end of trial (p < 0.004). Conclusion: The addition of pressure-biofeedback to a 6-week conventional program appeared to increase deep cervical flexor muscle performance, compared to the exercise program alone for people with reduced muscle performance.

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Is there a difference in range of motion, neck pain, and outcomes in patients with ossification of posterior longitudinal ligament versus those with cervical spondylosis, treated with plated laminoplasty?

Neurosurgical FOCUS ◽

10.3171/2013.4.focus1394 ◽

2013 ◽

Vol 35 (1) ◽

pp. E9 ◽

Cited By ~ 30

Author(s):

Takahito Fujimori ◽

Hai Le ◽

John E. Ziewacz ◽

Dean Chou ◽

Praveen V. Mummaneni

Keyword(s):

Neck Pain ◽

Range Of Motion ◽

Clinical Outcomes ◽

San Francisco ◽

Japanese Orthopaedic Association ◽

Minimum Clinically Important Difference ◽

Posterior Longitudinal Ligament ◽

Flexion Angle ◽

Radiographic Outcomes ◽

The Mean

Object There are little data on the effects of plated, or plate-only, open-door laminoplasty on cervical range of motion (ROM), neck pain, and clinical outcomes. The purpose of this study was to compare ROM after a plated laminoplasty in patients with ossification of posterior longitudinal ligament (OPLL) versus those with cervical spondylotic myelopathy (CSM) and to correlate ROM with postoperative neck pain and neurological outcomes. Methods The authors retrospectively compared patients with a diagnosis of cervical stenosis due to either OPLL or CSM who had been treated with plated laminoplasty in the period from 2007 to 2012 at the University of California, San Francisco. Clinical outcomes were measured using the modified Japanese Orthopaedic Association (mJOA) scale and neck visual analog scale (VAS). Radiographic outcomes included assessment of changes in the C2–7 Cobb angle at flexion and extension, ROM at C2–7, and ROM of proximal and distal segments adjacent to the plated lamina. Results Sixty patients (40 men and 20 women) with an average age of 63.1 ± 10.9 years were included in the study. Forty-one patients had degenerative CSM and 19 patients had OPLL. The mean follow-up period was 20.9 ± 13.1 months. The mean mJOA score significantly improved in both the CSM and the OPLL groups (12.8 to 14.5, p < 0.01; and 13.2 to 14.2, respectively; p = 0.04). In the CSM group, the mean VAS neck score significantly improved from 4.2 to 2.6 after surgery (p = 0.01), but this improvement did not reach the minimum clinically important difference (MCID). Neither was there significant improvement in the VAS neck score in the OPLL group (3.6 to 3.1, p = 0.17). In the CSM group, ROM at C2–7 significantly decreased from 32.7° before surgery to 24.4° after surgery (p < 0.01). In the OPLL group, ROM at C2–7 significantly decreased from 34.4° to 20.8° (p < 0.01). In the CSM group, the change in the VAS neck score significantly correlated with the change in the flexion angle (r = − 0.31) and the extension angle (r = − 0.37); however, it did not correlate with the change in ROM at C2–7 (r = − 0.1). In the OPLL group, the change in the VAS neck score did not correlate with the change in the flexion angle (r = 0.03), the extension angle (r = − 0.17), or the ROM at C2–7 (r = − 0.28). The OPLL group had a significantly greater loss of ROM after surgery than did the CSM group (p = 0.04). There was no significant correlation between the change in ROM and the mJOA score in either group. Conclusions Plated laminoplasty in patients with either OPLL or CSM decreases cervical ROM, especially in the extension angle. Among patients who have undergone laminoplasty, those with OPLL lose more ROM than do those with CSM. No correlation was observed between neck pain and ROM in either group. Neither group had a change in neck pain that reached the MCID following laminoplasty. Both groups improved in neurological function and outcomes.

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American National Standard for Human Factors Engineering of Visual Display Terminal Workstations: A Report to the Society

Proceedings of the Human Factors Society Annual Meeting ◽

10.1177/154193128502901020 ◽

1985 ◽

Vol 29 (10) ◽

pp. 987-987 ◽

Cited By ~ 1

Author(s):

Gene Lynch

Keyword(s):

Human Factors ◽

Text Processing ◽

Data Entry ◽

Visual Display ◽

Measurement Methods ◽

National Standards ◽

National Standard ◽

Human Factors Engineering ◽

Visual Display Terminal ◽

The Individual

The American National Standard for Human Factors Engineering of Visual Display Terminal Workstations, the first standard sponsored by the Human Factors Society, is in the final stages of acceptance as an American National Standard. This standard addresses the physical and perceptual aspects of the visual display terminal workstation as used in text processing, data entry, and data inquiry. Standards take on many different forms and fill a variety of needs. Basically a standard provides a reference. Some standards are written so that two systems may be designed to complement each other or fit together. Lightbulbs and fixtures designed to the same standard will work together. In the case of human factors standards one half of the system is already designed, the human. The variety of the design of this part of the system requires that human factors standards identify the parameters to be considered and the corresponding measurement methods needed to insure that the equipment is designed to fit the individual human. A good solution needs to be based on the particular set of circumstances at hand. The voluntary standards method, known as the American National Standards, provides a vehicle for specifying the appropriate parameters and measurement methods while incorporating the necessary flexibility required to insure good designs for individuals. The purpose of this panel session is to provide the society with an interactive session with representatives of the standards drafting committee. A brief history of the committee and its activities will be presented. The panelists will then describe the approach taken in each of the major sections, the mandatory requirements, and the elements the panelists consider to be of particular interest

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