Association Between Masseter Muscle Activity Levels Recorded During Sleep and Signs and Symptoms of Temporomandibular Disorders in Healthy Young Adults

2007 ◽  
Vol 2007 ◽  
pp. 269-270
Author(s):  
R. Ohrbach
Keyword(s):  
Young Adults ◽  
Muscle Activity ◽  
Temporomandibular Disorders ◽  
Masseter Muscle ◽  
Signs And Symptoms ◽  
Activity Levels

scholarly journals Masseter muscle activity in daily life of healthy young adults —During mealtime and others—

2014 ◽  
Vol 20 (2) ◽  
pp. 136-137
Author(s):  
K Watanabe ◽  
T Yamaguchi ◽  
A Gotouda ◽  
K Okada ◽  
S Mikami ◽  
...  
Keyword(s):  
Young Adults ◽  
Muscle Activity ◽  
Masseter Muscle ◽  
Daily Life

Nocturnal masseter muscle activity is related to symptoms and somatization in temporomandibular disorders

2012 ◽  
Vol 73 (4) ◽  
pp. 307-312 ◽  
Author(s):  
Meike Shedden Mora ◽  
Daniel Weber ◽  
Saskia Borkowski ◽  
Winfried Rief
Keyword(s):  
Muscle Activity ◽  
Temporomandibular Disorders ◽  
Masseter Muscle

scholarly journals Maximal bite force in young adults with temporomandibular disorders and bruxism

2007 ◽  
Vol 21 (3) ◽  
pp. 278-283 ◽  
Author(s):  
Raquel Aparecida Pizolato ◽  
Maria Beatriz Duarte Gavião ◽  
Giédre Berretin-Felix ◽  
Ana Claudia Martins Sampaio ◽  
Alceu Sergio Trindade Junior
Keyword(s):  
Young Adults ◽  
Temporomandibular Disorders ◽  
Influencing Factor ◽  
Clinical Signs ◽  
Signs And Symptoms ◽  
Bite Force ◽  
Control Group ◽  
Exact Test ◽  
Waking Up ◽  
Structured Questionnaire

Parafunctional habits, such as bruxism, are contributory factors for temporomandibular disorders (TMD). The aim of this study was to evaluate the maximal bite force (MBF) in the presence of TMD and bruxism (TMDB) in young adults. Twelve women (mean age 21.5 years) and 7 men (mean age 22.4 years), composed the TMDB group. Ten healthy women and 9 men (mean age 21.4 and 22.4 years, respectively) formed the control group. TMD symptoms were evaluated by a structured questionnaire and clinical signs/symptoms were evaluated during clinical examination. A visual analogical scale (VAS) was applied for stress assessment. MBF was measured with a gnatodynamometer. The subjects were asked to bite 2 times with maximal effort, during 5 seconds, with a rest interval of about one minute. The highest values were considered. The data were analyzed with Shapiro-Wilks W-test, descriptive statistics, paired or unpaired t tests or Mann-Whitney tests when indicated, and Fisher's exact test (p < 0.05). TMDB women presented lower values of MBF as compared to those presented by TMDB men and by the control group. MBF for TMDB men was similar to that of the control group. The proportion of TMDB women with muscle pain and facial/teeth/head pain upon waking up was significantly higher than that of men. Control women presented significantly lower stress scores than the others. It was concluded that MBF was reduced in TMDB women, as they presented more signs and symptoms. Men presented higher MBF values than women, but TMD and bruxism did not significantly decrease MBF. Stress was not an influencing factor for TMD and bruxism in men.

Masseter muscle activity during the whole day in children and young adults

1999 ◽  
Vol 26 (11) ◽  
pp. 858-864 ◽  
Author(s):  
K. Miyamoto ◽  
Y. Ishizuka ◽  
H. M. Ueda ◽  
M. Saifuddin ◽  
N. Shikata ◽  
...  
Keyword(s):  
Young Adults ◽  
Muscle Activity ◽  
Masseter Muscle ◽  
Children And Young Adults

scholarly journals Electromyography as a Means of Assessing Masticatory Muscle Activity in Patients with Pain-Related Temporomandibular Disorders

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Liliana Szyszka-Sommerfeld ◽  
Monika Machoy ◽  
Mariusz Lipski ◽  
Krzysztof Woźniak
Keyword(s):  
Electrical Activity ◽  
Muscle Activity ◽  
Temporomandibular Disorders ◽  
Masseter Muscle ◽  
Mixed Dentition ◽  
Masticatory Muscle ◽  
Temporalis Muscle ◽  
Pain Group ◽  
Axis I ◽  
Masseter Muscles

Aim. The aim of this study was to evaluate masticatory muscle electrical activity in patients with pain-related and pain-free temporomandibular disorders (TMDs) as well as in subjects with no TMD. Methods. Ninety children with mixed dentition were recruited to the study. Of this total, 30 subjects were diagnosed with pain-related TMD (TMD-P), 30 with pain-free TMD (TMD-PF), and 30 without TMD. We used Axis I of the Research Diagnostic Criteria for TMD (RDC/TMD) to assess the presence of TMD in the examined children. The electromyographical (EMG) potentials of the temporalis and masseter muscles were measured with a DAB-Bluetooth Instrument (Zebris Medical GmbH, Germany) at rest and during maximum voluntary clenching (MVC). Results. An analysis of the EMG recordings showed statistically significant intergroup differences in masticatory muscle electrical activity at rest and during MVC. Significantly higher rest temporalis muscle activity was noted in pain-related TMD subjects compared with that children from the pain-free TMD and non-TMD groups, as well as in TMD-PF children in relation to those without TMD. The EMG potentials of the temporalis muscle during MVC were much lower in patients with TMD-P than in pain-free TMD and non-TMD subjects. Masseter muscle activity at rest in the TMD-pain group was significantly greater, and masseter muscle EMG potentials during clenching were markedly lower than in patients with no TMD diagnosis. Conclusion. The use of electromyography to assess masticatory muscle function revealed alterations in the pattern of temporalis and masseter muscle activity in patients with pain-related TMD compared with the pain-free subjects.

Simulate and sense force exertions during virtual patient transfer tasks

2020 ◽  
Vol 64 (1) ◽  
pp. 2092-2096
Author(s):  
Ken Chen ◽  
Rebecca Widmayer ◽  
Karen B. Chen
Keyword(s):  
Muscle Activity ◽  
Fine Tuning ◽  
Activity Levels ◽  
Patient Lifting ◽  
Perceived Workload ◽  
Specific Muscle ◽  
Muscle Groups ◽  
Forceful Exertion ◽  
Lifting Task ◽  
Transfer Tasks

Virtual reality (VR) is commonplace for training, yet simulated physical activities in VR do not require trainees to engage and contract the muscle groups normally engaged in physical lifting. This paper presents a muscle activity-driven interface to elicit the sensation of forceful, physical exertions when lifting virtual objects. Users contracted and attained predefined muscle activity levels that were calibrated to user-specific muscle activity when lifting the physical counterpart. The overarching goal is to engage the appropriate muscles, and thereby encourage and elicit behaviors normally seen in the physical environment. Activities of 12 key muscles were monitored using electromyography (EMG) sensors while they performed a three-part patient lifting task in a Cave Automatic Virtual Environment. Participants reported higher task mental loads and less physical loads for the virtual lift than the physical lift. Findings suggest the potential to elicit sensation of forceful exertion via EMG feedback but needed fine-tuning to offset perceived workload.

scholarly journals Choroidal Thickness and Volume Modifications Induced by Aerobic Exercise in Healthy Young Adults

2020 ◽  
Author(s):  
Gema Insa-Sánchez ◽  
Lorena Fuentes-Broto ◽  
Alberto Cobos ◽  
Elvira Orduna Hospital ◽  
Francisco Segura ◽  
...  
Keyword(s):  
Physical Activity ◽  
Young Adults ◽  
Physical Exercise ◽  
Choroidal Thickness ◽  
Activity Level ◽  
Enhanced Depth Imaging ◽  
Activity Levels ◽  
Imaging Protocol ◽  
Post Exercise ◽  
Physical Activity Levels

<b><i>Introduction:</i></b> Our aim was to evaluate the changes in choroidal thickness (CT) and volume (CV) following aerobic physical exercise in healthy young adults. <b><i>Methods:</i></b> This study included 72 eyes from healthy volunteers between 22 and 37 years old. Using the International Physical Activity Questionnaire, total physical activity was computed. Measurements using an autorefractometer, ocular biometry, and spectral-domain optical coherence tomography using the Enhanced Depth Imaging protocol were taken. OCT was performed as a baseline measurement and after performing 10 min of dynamic physical exercise (3 and 10 min post-exercise). The choroidal layer was manually segmented, and the CT and CV in different areas from the Early Treatment Diabetic Retinopathy Study grid were obtained. <b><i>Results:</i></b> In healthy adults, at 3 min post-exercise, CT was higher in the subfoveal, the 3-mm nasal, and the 6-mm superior areas. Between 3 and 10 min post-exercise, the CT was reduced in all areas, and in some areas, the values were even smaller than the baseline measurements. The CV values showed changes after exercise similar to those of thickness. The total CV recovery after exercise was related to sex and physical activity level. <b><i>Conclusion:</i></b> Individuals with higher physical activity habits had greater CV at rest than those with lower physical activity levels. During exercise, healthy young people adjust CT and CV. At 3 min post-exercise, CT and CV increase. Women and individuals with greater physical activity levels reduce their total CV more than others during recovery.

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