Duration and sequence of muscular activation in dentate individuals and complete denture wearers during simulation of activities of daily living

Abstract

Occlusal support may influence muscular function during complex motor tasks. This study evaluated the duration and sequence of muscular activation of masticatory (temporal, masseter), postural head/neck (sternocleidomastoid, trapezius), postural trunk (rectus abdominis, paravertebrals), and low extremity strength (rectus femoris, gastrocnemius) muscles during simulation of activities of daily living (ADL) in edentulous women wearing complete dentures (n = 10) and in dentate women (n = 10). Electromyographic activity was recorded during tests of stand‐up/sit down in the Chair, sit up/lie down in the Bed and lift/lower Bags. Occlusal support (dentures) had a significant effect on duration of muscular activation in the Chair Test: the masseter muscle activated longer with dentures during the standing movement. The masseter and sternocleidomastoid muscles showed significant alteration in their order of activation in non‐denture‐wearing women. For the Bed Test, dentures had significant effect for the gastrocnemius during the sitting‐up phase and for the rectus abdominis during the lying‐down movement. For the Bag Test, head/neck muscles were activated in a different order as a function of occlusal support. Anticipation of activation of the paravertebral muscles, rectus abdominis, and gastrocnemius was observed in dentate women compared with denture wearers. These findings suggest that occlusal support influences electromyographic activity of some muscles during simulation of ADL.

Rising time from bed in acute phase after hospitalization predicts frailty at hospital discharge in patients with acute heart failure

“…Previous studies indicated that histories of prior HF and/or diabetes are likely to cause physical deterioration, including general muscle weakness [32][33][34][35]. Rising from bed requires strength in the upper and lower limb muscles as well as the trunk muscles [36,37]. Therefore, in patients with prior HF and/or diabetes that may have reduced physical function, rising time showed a higher odds ratio for frailty.…”

Preliminary Assessment of Muscle Activity and Muscle Characteristics during Training with Powered Robotic Exoskeleton: A Repeated-Measures Study

“…All data were calculated as mean values of muscle activity during each motion. Electrodes were attached to the following locations [26][27][28][29][30]: (1) Rectus femoris (RF), (2) tibialis anterior (TA), (3) biceps femoris (BF), (4) gastrocnemius (GCM), ( 5) deltoid (DEL), (6) upper trapezius (UT), (7) middle trapezius (MT), and (8) erector spine lumbar (ESL).…”

Muscle activity between dentate and edentulous patients rehabilitated with dental prostheses: A systematic review

“…When combined, these vari ables provide a more comprehensive analysis of muscle activity during complex movements. [13][14][15][16] Since 1950s, this technology has been used to analyse jaw muscle activity. 11,12 In 2017, a systematic review analysing this topic was published.…”