Immediate effect of a motor control exercise target to the neck muscles on upper cervical range of motion and motor control in patients with temporomandibular disorder

ObjectiveTo evaluate whether a single specific motor control training session for the neck flexor and deep extensor muscles improves upper cervical range of motion and neck motor control in patients with temporomandibular disorder (TMD) and compare them to a group without TMD. MethodsThis is a before and after, controlled study. The TMD group included women aged between 18-45 years old, complaining of pain in the orofacial region in the last 6 months and diagnosed with masticatory myofascial pain according to Research Diagnostic Criteria (RDC/MD). The control group included match-controls without TMD. The participants were evaluated to global and upper (Flexion Rotation Test - FRT) neck range of motion (ROM) and to neck motor control (Cranio-Cervical Flexion Test - CCFT). They were treated with a protocol of specific motor control exercises targeted to flexor and extensor neck muscles for 30 minutes. One day after the protocol the patients were reevaluated. ResultsA total of 23 volunteers were evaluated. The TMD group showed immediate improvement in left cervical rotation (p=0.043) and right FRT (p=0.036), while the control group did not show any improvement. There was no difference between the groups before and after treatment in relation to cervical movements. Regarding cervical motor control in both groups, the highest prevalence was of results between 24 and 26 mmHg after treatment, different from before the intervention (20 and 22 mmHg) in both groups.ConclusionA single session of specific neck motor control training only improved the left cervical rotation and upper right rotation in the TMD group, but not in the control group. There is no difference at the end of treatment between the groups. Volunteers with TMD showed improvement in the pattern of motor control of the neck when compared to volunteers without TMD.

EFFECT OF 6 WEEKS GREEVA SANCHALAN ON CERVICAL SPINE HEALTH AMONG MALE IT PROFESSIONALS

Purpose of present research was to study the effect of 6 weeks Greeva Sanchalan on Cervical Spine Health or work-related neck pain among male IT professionals. Quasi Pre-test Post-test Non-Equivalent research design used to achieve this objective. Non-Probability based Judgemental Sampling Technique, was used to screen samples from 2 different IT firms from Pune city, who were falling under the criteria of using laptop/desktop/computer for ≥5hours/day, between 30-50years of age group, experiencing neck pain/stiffness and were willing to participate in study. Neck Disability Index Questionnaire (NDI) includes 10 measuring sections such as neck pain, personal care, headache, lifting, reading, concentration, sleeping, work, driving, and recreation was used to collecting data. Using ABBA method, total selected 26 IT professionals, were divided into two groups, i.e., experimental (n=13) and control group (n=13). 6 weeks Greeva Sanchalan intervention was developed and implemented to experimental group’s IT professionals only. After 6 weeks, post-test NDI scores were collected for all 26 IT professionals. NDI pre and post test scores were statistically analysed through Descriptive and Inferential statistics using SPSS software. Mean of pre and post NDI scores for experimental group was 7.92 (±1.89) and 5.62 (±1.26) respectively. Similarly Mean of pre and post NDI scores for control group was 7.54 (±2.44) and 7.77 (± 2.98) respectively. On comparing the Mean of pre and post NDI scores with Neck Disability Index standard norms, all 26 IT professionals were falling within mild neck disability category. Mean of change in performance for experimental and control group’s IT professionals were 2.31 (±2.06) and 0.23 (±1.74) respectively. Calculated mean difference of change in performance was 2.54 for 26 IT professionals. Calculated t-value was 3.40(24) at 0.05 significance level (p=0.002; p less than 0.05). According to statistical outcome, 6 weeks Greeva Sanchalan intervention benefitted in reducing neck pain/stiffness related to work among IT professionals, which relieved muscular tension of neck-shoulder region. It improves range of motion (CROM) of cervical pivot joint along with regaining neck muscles flexibility, which also strengthens neck muscles.

Effect of potato extractives on experimental polyneuritis in pigeons

According to most authors, the signs of polyneuritis in pigeons and hens are the following disorders: loss of appetite, emaciation, limb paralysis and convulsions of the neck muscles, resulting in the characteristic tilting back of the head occurring 1-3 days before death and appearing as seizures from 5 to 10 times a day, especially at external stimulation.

Preparatory activity links frontal eye field activity with small amplitude motor unit recruitment of neck muscles during gaze planning

A hallmark of intelligent behavior is that we can separate intention from action. To understand the mechanism that gates the flow of information between motor planning and execution, we compared the activity of frontal eye field neurons with motor unit activity from neck muscles in the presence of an intervening delay period in which spatial information regarding the target was available to plan a response. Whereas spatially-specific delay period activity was present in the activity of frontal eye field neurons, it was absent in motor unit activity. Nonetheless, motor unit activity was correlated with the time it took to initiate saccades. Interestingly, we observed a heterogeneity of responses amongst motor units, such that only units with smaller amplitudes showed a clear modulation during the delay period. These small amplitude motor units also had higher spontaneous activity compared to the units which showed modulation only during the movement epoch. Taken together, our results suggest the activity of smaller motor units convey temporal information and explains how the delay period primes muscle activity leading to faster reaction times.