Immediate Effects of Dynamic Neck Training Combined with the Hold-Relax Technique for Young College Students with Video Display Terminal Syndrome

Lee, Hyun-Mu; Park, Du-Jin; Kim, Seong-Yeol

doi:10.1123/ijatt.2015-0006

Cited by 4 publications

(1 citation statement)

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“…The participants had no history of musculoskeletal, neurological, or psychiatric disorder. Subjects who had any head, neck, or upper extremity disorders that may have interfered with the VDT work performance and who had a cranio-vertebral angle (CVA) >50° during VDT work were excluded from the study to investigate habituated forward head posture [ 25 , 26 , 27 ]. The CVA is the angle between the line connecting the tragus to the distal tip of the spinous process of C7 and the horizontal line [ 26 ].…”

Section: Methodsmentioning

confidence: 99%

Effects of a Traction Device for Head Weight Reduction and Neutral Alignment during Sedentary Visual Display Terminal (VDT) Work on Postural Alignment, Muscle Properties, Hemodynamics, Preference, and Working Memory Performance

Jung

Cho

Kang

2022

IJERPH

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The forward head posture of visual display terminal (VDT) users induces various physical and cognitive clinical symptoms. However, few studies have been conducted to identify and solve problems associated with VDT posture. This study aimed to examine the adverse effects of VDT posture and the positive effects of traction-combined workstations by measuring postural alignment, muscle properties, blood velocity, preference, and working memory. Thirty-four healthy VDT users (18 males and 16 females aged 20–30 years) participated in the experiment at three workstations, including conventional (VDT_C), head support (VDT_S), and upright (VDT_U) workstations. They conducted 2-back working memory task. The craniovertebral angle (CVA), muscle tone and stiffness, blood velocity and visual analogue discomfort scale (VADS) were measured to examine the influence of workstations. VDT_C showed increased muscle tone or stiffness in the levator scapulae (LS), suboccipital muscle (SM), and sternocleidomastoid muscle (SCM) and an increased reaction time (RT) in working memory. However, VDT_S showed decreased stiffness and tone of SM and improved comfort. In addition, VDT_U showed decreased stiffness or tone of the LS and SCM and improved blood velocity and RT. In conclusion, maintaining neutral alignment significantly improved working memory performance, muscle properties, and blood velocity.

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Section: Methodsmentioning

confidence: 99%

Effects of a Traction Device for Head Weight Reduction and Neutral Alignment during Sedentary Visual Display Terminal (VDT) Work on Postural Alignment, Muscle Properties, Hemodynamics, Preference, and Working Memory Performance

Jung

Cho

Kang

2022

IJERPH

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A systematic review and meta analysis of measurement properties for the flexion relaxation ratio in people with and without non specific spine pain

De Carvalho,

Mackey,

et al. 2024

Sci Rep

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This review sought to identify, critically appraise, compare, and summarize the literature on the reliability, discriminative validity and responsiveness of the flexion relaxation ratio (FRR) in adults (≥ 18 years old) with or without spine pain (any duration), in either a clinical or research context. The review protocol was registered on Open Science Framework (https://doi.org/10.17605/OSF.IO/27EDF) and follows COSMIN, PRISMA, and PRESS guidelines. Six databases were searched from inception to June 1, 2022. The search string was developed by content experts and a health services librarian. Two pairs of reviewers independently completed titles/abstracts and full text screening for inclusion, data extraction, and risk of bias assessment (COSMIN RoB Toolkit). At all stages, discrepancies were resolved through consensus meetings. Data were pooled where possible with a three-level random effects meta-analyses and a modified GRADE assessment was used for the summary of findings. Following duplicate removal, 728 titles/abstracts and 219 full texts were screened with 23 included in this review. We found, with moderate certainty of evidence, that the cervical FRR has high test–retest reliability and lumbar FRR has moderate to high test–retest reliability, and with high certainty of evidence that the cervical and lumbar FRR can discriminate between healthy and clinical groups (standardized mean difference − 1.16 [95% CI − 2.00, − 0.32] and − 1.21 [− 1.84, − 0.58] respectively). There was not enough evidence to summarize findings for thoracic FRR discriminative validity or the standard error of measurement for the FRR. Several studies used FRR assuming responsiveness, but no studies were designed in a way that could confirm responsiveness. The evidence supports adequate reliability of FRR for the cervical and lumbar spine, and discriminative validity for the cervical and lumbar spine only. Improvements in study design and reporting are needed to strengthen the evidence base to determine the remaining measurement properties of this outcome.

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Is the flexion relaxation ratio a reliable, valid, and responsive measure for individuals with and without non-specific spine pain? A systematic review and meta-analysis

De Carvalho,

Mackey,

et al. 2023

Preprint

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This review sought to identify, critically appraise, compare, and summarize the literature on the reliability, discriminative validity and responsiveness of the Flexion Relaxation Ratio (FRR) in adults (≥ 18 years old) with or without spine pain (any duration), in either a clinical or research context. The review protocol was registered on Open Science Framework (https://doi.org/10.17605/OSF.IO/27EDF) and follows COSMIN, PRISMA, and PRESS guidelines. Six databases were searched from inception to June 1, 2022. The search string was developed by content experts and a health services librarian. Two pairs of reviewers independently completed titles/abstracts and full text screening for inclusion, data extraction, and risk of bias assessment (COSMIN RoB Toolkit). At all stages, discrepancies were resolved through consensus meetings. Data were pooled where possible with random effects meta-analyses and a modified GRADE assessment was used for the summary of findings. Following duplicate removal, 728 titles/abstracts and 219 full texts were screened with 55 included in this review. We found, with moderate certainty, that the cervical FRR has high test-retest reliability and lumbar FRR has moderate to high test-retest reliability, and with high certainty that the cervical and lumbar FRR can discriminate between healthy and clinical groups (standardized mean difference − 0.82 [95% CI -1.82, 0.17] and − 1.21 [-1.84, -0.58] respectively). There was not enough evidence to summarize findings for thoracic FRR discriminative validity or the standard error of measurement for the FRR in either the cervical, thoracic, or lumbar segments of the spine. Several studies that used FRR assumed responsiveness, but no studies were designed in a way that could confirm responsiveness. The evidence supports adequate reliability of FRR for the cervical and lumbar spine, and discriminative validity for the cervical and lumbar spine only. Improvements in study design and reporting are needed to strengthen the evidence base to determine the remaining measurement properties of this outcome.

show abstract

Immediate Effects of Dynamic Neck Training Combined with the Hold-Relax Technique for Young College Students with Video Display Terminal Syndrome

Cited by 4 publications

References 0 publications

Effects of a Traction Device for Head Weight Reduction and Neutral Alignment during Sedentary Visual Display Terminal (VDT) Work on Postural Alignment, Muscle Properties, Hemodynamics, Preference, and Working Memory Performance

Effects of a Traction Device for Head Weight Reduction and Neutral Alignment during Sedentary Visual Display Terminal (VDT) Work on Postural Alignment, Muscle Properties, Hemodynamics, Preference, and Working Memory Performance

A systematic review and meta analysis of measurement properties for the flexion relaxation ratio in people with and without non specific spine pain

Is the flexion relaxation ratio a reliable, valid, and responsive measure for individuals with and without non-specific spine pain? A systematic review and meta-analysis

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