The effect of postural correction on muscle activation amplitudes recorded from the cervicobrachial region

McLean, Linda

doi:10.1016/j.jelekin.2005.06.003

Cited by 97 publications

(69 citation statements)

References 36 publications

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“…It has also been reported that having a habitual forward head posture could contribute to altering the soft tissue in the cervical region by reducing the muscular requirement of the paracervical and suboccipital muscles and increasing stress on the ligaments 8) . McLean (2005) suggested that a sustained forward head posture decreased the muscular efficiency and increased the muscular activity of the upper trapezius and the masseter muscles 10) . Our result showed that feedback from the upper trapezius muscle had an effect in decreasing the forward head angles.…”

Section: Discussionmentioning

confidence: 99%

“…Increased forward head, specifically, which combines lower cervical flexion and upper cervical extension with rounded shoulders, might result in weakness of the cervical extensors as well as increased compressive forces in the articulations of the cervical spine 8,9) . Previous research has presented data on the positive relationship between activation of the upper trapezius muscle and flexion of the cervical spine muscles during computer operation 8,10,11) . It has been documented that the disadvantages of flexedrelaxed sitting are that it leads to increased disc pressure, tension in passive structures and flexion relaxation within the pain-free population 7,12) .…”

mentioning

confidence: 99%

“…These devices are thought to provide support for postural alignment, reducing static muscle activity. However, they may also reduce spinal motion and thereby compromise disc nutrition 10) . Additionally, a recent review article reported that ergonomic configuration was usually not effective for instances of long-term low back and neck pain 16) .…”

mentioning

confidence: 99%

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Effect of EMG‐based Feedback on Posture Correction during Computer Operation

Park

Yoo

2012

Journal of Occupational Health

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Effect of EMG-based Feedback on PostureCorrection during Computer Operation: Se-yeon PARK, et al. Department of Physical Therapy, The Graduate School, Inje University, Republic of Korea-Objective: The aim of this study was to investigate the effects of an EMG-based feedback device on the human musculoskeletal system by assessing the kinematics of the lumbar and cervical regions during computer operation. Methods: Using an EMG device, measurements were collected under four conditions: with feedback from the upper trapezius muscle, from the L4-erector spinae muscles and from both and without feedback (control). During periods of 15 min of computer operation, kinematic data were collected using the Zebris motion analysis system to investigate 14 university employees. Results: Feedback assessment effectively reduced the kinematic changes in the sagittal plane compared with the control (p<0.05). Feedback from the L4 erector spinae reduced the trunk flexion and forward head angles, which were significantly different compared with those under the feedback from the upper trapezius and the control conditions (p<0.05). Conclusion: We observed that the use of an EMG-based feedback device was effective in reducing habitual forward head and flexed-relaxed postures during computer operation. Additionally, posture correction from the lumbar region could be a way to reduce forward head posture as well as flexed-relaxed posture. (J Occup Health 2012; 54: 271-277)

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

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Effect of EMG‐based Feedback on Posture Correction during Computer Operation

Park

Yoo

2012

Journal of Occupational Health

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“…During all normalization contractions, data were sample for 5 s, RMS amplitudes were computed across each contraction using a moving window of 200 ms. The window with the highest value of RMS across all contractions and all repetitions was used to represent the maximal voluntary activation amplitude (MVE) for each muscle [32].…”

Section: Emg Normalizationmentioning

confidence: 99%

Effect of Different Types of Rest-Break Interventions on Neck and Shoulder Muscle Activity, Perceived Discomfort and Productivity in Symptomatic VDU Operators: A Randomized Controlled Trial

Nakphet

Chaikumarn

Janwantanakul

2014

International Journal of Occupational Safety and Ergonomics

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“…This malpositioning of the scapula significantly increases the activity of mooring muscles. Compared with a neutral head position, the electromyographic activity of the levator scapula and upper and lower trapezius significantly increased with a forward head position [15] [20]. Moreover, the electromyographic activity of the serratus anterior significantly decreased during loaded isometric shoulder flexion with a forward head position [15].…”

Section: Discussionmentioning

confidence: 95%

The Relationship between Neck and Shoulder Pain and the Sagittal Alignment of the Spine in Standing in Younger Generation

Kenmoku¹,

Suzuki²,

Ochiai³

et al. 2015

OJO

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Background: The relationship between chronic neck and shoulder pain and posture remains controversial. The purpose of this study was to investigate the relationship between chronic neck and shoulder pain and spinal sagittal alignment in standing posture in younger generation. Methods: Subjects included 57 females and 32 males (average age, 29.9 ± 5.7 years). All subjects were 20s or 30s. Spinal curvature was assessed using SpinalMouse. The subjects were also divided into a normal group (VAS zero group) and a pain group by VAS results. Statistical analysis was performed by Student's t-test. Significance was defined as p < 0.05. Results: The normal group and pain group included 29 and 60 subjects, respectively. In terms of location of pain, thirty-one subjects felt neck pain, 50 felt pain above the scapula, and 17 felt pain between the thoracic spine and scapula. Thoracic kyphosis and lumbar lordosis in the pain group were significantly higher than those in the normal group (p = 0.013 and p = 0.020, respectively). Thoracic kyphosis in subjects with neck pain or pain above scapula was significantly higher than that in subjects without pain (p = 0.0075 and p = 0.025, respectively). Lumbar lordosis in subjects with pain above the scapula or interscapula was significantly higher than that in subjects without pain (p = 0.016).

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The effect of postural correction on muscle activation amplitudes recorded from the cervicobrachial region

Cited by 97 publications

References 36 publications

Effect of EMG‐based Feedback on Posture Correction during Computer Operation

Effect of EMG‐based Feedback on Posture Correction during Computer Operation

Effect of Different Types of Rest-Break Interventions on Neck and Shoulder Muscle Activity, Perceived Discomfort and Productivity in Symptomatic VDU Operators: A Randomized Controlled Trial

The Relationship between Neck and Shoulder Pain and the Sagittal Alignment of the Spine in Standing in Younger Generation

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