• The Korean Journal of Pain
• /
• 제35권3호
• /
• pp.240-249
• /
• 2022

Background: Widespread pain partially depends upon sensitization of central pain mechanisms. However, mechanisms controlling pain distribution are not completely known. The present study sought to assess skin temperature variations in the area of experimentally-induced pain and potential sex differences. Methods: Pressure-pain thresholds (PPTs) were measured on the right infraspinatus muscle. At the end of Day 0, all participants performed an eccentric exercise of the shoulder external rotators to induce muscle soreness 24 hours after. On Day 1, participants indicated on a body chart the area of pain induced by 60 seconds of suprathreshold pressure stimulation (STPS; PPT + 20%) on the right infraspinatus muscle. Skin temperature variations in the area of referred pain were recorded with an infrared thermography camera, immediately before and after the STPS. Results: Twenty healthy, pain-free individuals (10 females) participated. On Day 0, the pre-STPS temperature was higher than the post-STPS temperature on the arm (P = 0.001) and forearm (P = 0.003). On Day 1, the pre-STPS temperature was higher than the post-STPS temperature on the shoulder (P = 0.015), arm (P = 0.001), and forearm (P = 0.010). On Day 0, the temperature decrease after STPS in females was greater than in males on the forearm (P = 0.039). On Day 1, a greater temperature decrease was found amongst females compared with males at the shoulder (P = 0.018), arm (P = 0.046), and forearm (P = 0.005). Conclusions: These findings indicate that sympathetic vasomotor responses contribute to expand pressure-induced referred pain, especially among females.

• 생명과학회지
• /
• 제20권4호
• /
• pp.496-502
• /
• 2010

산성 식염수 쥐모델은 사람의 섬유근통에 근접한 모델로 제시되고 있다. 포도씨에서 얻은 oligomeric proanthocyanidin complexes (OPC)는 항산화제로 알려져 있다. 저자들은 산성 식염수 모델에서 통증 역치에 대한 OPC의 효과를 연구했다. 좌측 장딴지 근육에 pH 4.0의 산성 식염수 $100\;{\mu}l$를 0일과 5일에 주사했다. 대조군은 pH 7.2의 생리 식염수를 같은 스케줄로 주사했다. 산성 식염수 그룹 10마리를 다시 두 그룹으로 나누어 한 그룹은 멸균 식염수, 다른 한 그룹은 OPC 300 mg/kg를 복강 내 주사했다. 복강 내 주사 한시간 후 다시 통각에 대한 역치를 조사했다. 0일에 비해 7일에서 산성 식염수 모델은 기계적 과통각을 나타냈다(p<0.05). OPC 300 mg/kg를 복강내 주사한 그룹에서 강력한 항통각 효과를 나타냈다(주사측 발바닥, p=0.001; 반대측 발바닥, p=0.002). 면역조직화학 염색상 복강내 식염수를 처치한 대조군에 비해 OPC 처치군에서 대뇌의 M1 및 M2 영역에서 산-감지 이온 통로3의 발현이 감소되었다(p<0.05). 사람의 섬유근통에서 OPC 치료의 효과를 보기 위한 연구가 향후 필요할 것으로 생각된다.

• 대한물리치료과학회지
• /
• 제31권2호
• /
• pp.1-14
• /
• 2024

Background: Many patients with chronic low back pain have reduced movement due to pain. For that reason, muscle strength weakens, which leads to pain again. The pain caused by such a vicious circle is not only caused by structural problems, but also by physical function, activity disorder, or psychological depression due to biopsychosocial approaches and pain neuroscience education was applied as an intervention to find out its effect. Therefore, this study was experimented with to find out the effects of pain neuroscience education on pain, physical function, activity disorder, and depression in patients with chronic low back pain. Design: Randomized control trial Method: The study subjects were 39 patients with chronic low back pain, and the study subjects were randomized through computers to the experimental group applying pain neuroscience education and the control group applying only general physical therapy and myofascial release techniques, and the experiment was conducted for 4 weeks. Pressure Pain Threshold , Schober test, Korean Roland-Morris Disability Questionnaire, Korean Oswestry Disability Index, and Korean Depression Screening Assessment were measured. Results: As a result of the study, there was no significant difference in pain neuroscience education compared to the group that applied only general physical therapy and myofascial release techniques in both lumbar pressure pain thresholds, Schober test, Korean Roland-Morris disability questionnaire, and Korean Oswestry disability questionnaire. However, the Korean Depression Screening Assessment which is the result of measuring depression, showed significant results(p<0.05). Conclusion: Therefore, it is believed that it can be a way to mediate the psychological part through pain neuroscience education for patients with chronic low back pain in the future.

• Journal of Oral Medicine and Pain
• /
• 제22권2호
• /
• pp.327-339
• /
• 1997

This study aimed at evaluating tile relationship between pressure pain threshold(PPT) and electromyographic(EMG) activity in 30 healthy volunteers and 30 patients with temporomandibular disorders. PPTs were determined with electric pressure algometry over masseter, temporalis anterior, sternocleidomastoid, and trapezius muscle during resting and clenching. To obtain more reliable result, two examiners measured PPTs two times on each muscles, randomly. Resting and clenching EMG activity and tenderness of all muscles were measured to evaluate the relationship with PPTs. The collected data were processed by SAS/STAT program. The obtained results were as follows : 1. Pressure pain thresholds in tendered muscles were lower than those in non-tendered muscles. This tendency was more prominant in masticatory muscles than in cervical muscles and in clenching than in resting. 2. There ware a tendency of higher PPTs in unaffected side than in affected side, but there were no significant difference statistically. 3. There wert no difference of PPTs between in preferred side and in ipsilateral side, significantly. 4. There was a significantly positive correlation between resting and clenching PPTs, but there were no correlation between PPTs and EMG activities. 5. Comparison of EMG activity between in higher group and in lower group by resting PPTs didn't show any significant difference. But resting EMG activity in the higher group of clenching PPTs were lower, on the contrary, clenching activity were higher than those in lower groups of clenching PPTs. From this results, the author concluded that the clenching PPTs was more important than resting PPTs in diagnosis of muscle dysfunction. And the author recommanded that all of three following test were performed for the proper diagnosis and treatment of orofacial Pain : muscle tenderness, EMG activity, and PPT.

• 대한통합의학회지
• /
• 제11권4호
• /
• pp.147-155
• /
• 2023

Purpose: Headache is a very common disease experienced at least once in daily life, and tension-type headaches have a high and increasing prevalence. Chronic headaches can cause functional damage and huge socioeconomic impacts. This study aimed to compare the effects of myofascial release technique with manual therapy and self-myofascial release technique using a foam roller on the pain threshold and body schema in patients with chronic tension-type headaches. Methods: The study was conducted on 20 patients living in Busan with chronic tension headaches. Myofascial release technique with manual therapy was performed on the suboccipital, sternocleidomastoid, scalene, and upper trapezius muscles. The self -myofascial release technique using a foam roller was applied to the cervical and thoracic muscles. A laterality test was performed using a recognized neck application developed to evaluate body schema ability. A pressure-pain threshold test was performed using an electronic pressure algometer to compare the results before and after the myofascial release technique. Results: After applying myofascial release with manual therapy and a foam roller, the pressure-pain threshold values showed significant changes in both groups (p<.05). As a result of the laterality test, myofascial release with manual therapy and a foam roller were applied to the painful area. The values showed significant changes in both groups (p<.05), but only the group using the foam roller showed a significant difference (p<.05) in painless areas. Conclusion: The myofascial release technique with manual therapy can be the primary treatment technique for pain control in painful areas. The self-muscle release technique using a foam roller can be an effective method when there is no pain or when maintenance is needed after pain control.

• 지역사회간호학회지
• /
• 제30권1호
• /
• pp.79-89
• /
• 2019

Purpose: The purpose of this paper is to determine effects of auricular acupressure on knee pain, range of motion, and sleep in the elderly with knee osteoarthritis. Methods: This is an experimental study designed with randomization and single-blind in a placebo-control approach. The subjects included the elderly with knee osteoarthritis who were using an elderly welfare facility. In each of the groups, 28 subjects were assigned. For the experimental group, auricular acupressure was applied to five pressure points related to the pain caused by osteoarthritis and sleep. In the case of the placebo-control group, auricular acupressure was applied to other five points than the former. The intervention lasted eight weeks. In order to examine intervention effects of auricular acupressure, joint pain, Pressure Pain Thresholds (PPTs), and extension and flexion range of motion (ROM) were measured weekly. As for the preand post-examinations, pain, sleep quality, and the time-by-sleep stage of the patients with knee osteoarthritis were measured. Results: The VAS scores in the experimental group with auricular acupressure significantly decreased through time (p<.001) and WOMAC also significantly decreased (p<.01) compared with the placebo-control group. However, there were no significant differences in PPTs. The flexion (p<.01) and extension (p<.001) ROMs measured for eight weeks improved over time. Meanwhile, sleep quality improved significantly after the intervention termination (p<.01), but there was no significant difference found in the time-by-sleep stage. Conclusion: Auricular acupressure applied for eight weeks was found to be effective in reducing joint pain, improving knee ROM, and improving sleep quality in patients with degenerative knee arthritis.

• Physical Therapy Rehabilitation Science
• /
• 제8권1호
• /
• pp.15-21
• /
• 2019

Objective: The purpose of this study was to identify whether cutaneous sensory (CS) changes induced by mechanical intervention (MI) increases the trigger point threshold of the same spinal segment as well as to investigate the relationship between the amounts of change in CS pressure pain thresholds (PPT). Design: Randomized controlled trial. Methods: Thirty-nine persons with myofacial pain (MFP) were recruited in this experiment. The subjects consisted of 20 men and 19 women (age 20-39). MI was applied on the subjects using the Graston technique for 5 minutes to induce CS changes. The CS changes were measured with sensory tests by using the Von Frey Filament, and PPT changes were estimated by using the pressure threshold meter. For the observation of sensory and PPT changes with time, the test was conducted for 15 minutes including a pre, post, and after intervention session. Results: CS threshold increased significantly when MI was applied (p<0.001). On the same spinal segment, changes in the right infraspinatus PPT was observed (p<0.001) but the PPT changes in other muscles were not significantly different. Furthermore, the control group CS and PPT were not significantly different. In addition, regression analysis showed that the CS changes have a larger impact on PPT in the same spinal segment (p<0.001). Conclusions: CS changes induced by MI make to change PPT on the same spinal segment. In other words, it is possible to identify PPT changes following CS changes except for the muscle which belongs to a different spinal segment. Therefore, application of MI is necessary for the CS changes in the same spinal segment. Furthermore, it can be useful in the clinical fields as a method of providing pain control and increasing the PPT.

• Journal of Oral Medicine and Pain
• /
• 제47권4호
• /
• pp.189-197
• /
• 2022

Purpose: Pain perception is affected by a wide range of contributing factors, including biological, psychological, and social factors. Although the provision of visual information could have a modulatory effect on pain perception, it is unclear whether such a visual effect might vary depending on the anatomical site and stimulation type. This study aimed to analyze the modulatory effect of visual information on the perception of sharp and dull pain in the face and hand and to assess the influence of individual fear levels on modulatory visual information. Methods: A total of 68 healthy male and female volunteers were recruited for this study. Pressure and pricking pain with and without visual information were induced on the masseter and thenar muscles, and alterations in pain threshold were evaluated. The survey was conducted using the Geop-Pain Questionnaire (GPQ). Results: The pricking pain threshold of the hand was significantly elevated when viewing the stimulated hand. This result indicated that the provision of visual information could decrease sensitivity to sharp pain in the hand. However, when correlating the GPQ score with the alteration in thresholds induced by visual information, no significant correlation was observed between the GPQ score and the threshold difference induced by visual information. This finding showed that the visual effect was not significantly affected by the fear level. Conclusions: This study showed that the effect of visual information on the pain threshold could vary according to the anatomical site and stimulation type. A better understanding of such a modulatory effect on pain perception might be useful for clinicians during painful therapeutic procedures.

• 한국엔터테인먼트산업학회논문지
• /
• 제14권7호
• /
• pp.539-548
• /
• 2020

긴장성 두통은 성인들에게 나타나는 두통 중 가장 흔한 일차성 두통이다. 장기간의 두통은 만성 두통을 야기시키고 일상생활에 큰 영향을 미친다. 본 연구의 목적은 긴장성 두통의 병원성 요인과 심인성 요인의 관리에 적합한 시청각적 엔터테인먼트와 연부조직 가동술을 통해 긴장성 두통에 기여하는 바를 비교하고자 한다. 연구대상은 6개월 이상 간헐적 혹은 지속적인 두통을 호소한 자로 선정된 30명에서 시청각적 엔터테인먼트군, 연부조직 가동술군, 시청각적 엔터테인먼트와 연부조직 가동술군 각각 10명씩 배정하였다. 배정된 군에서는 사전검사 후 4주간 주 3회씩 총 12회의 중재를 받고 사후검사를 실시하였다. 평가는 압력통각역치감각과 바이오피드백을 이용한 정신 생리학적 변수, 뇌파를 측정하였다. 측정된 결과는 이요인 반복측정 분산분석을 통해 측정 시점에 따른 군간의 교호작용을 분석하였다. 압력통각역치 결과, 오른쪽 등세모근의 결과에서 교호작용이 나타났으며 (p<.05), 시청각적 엔터테인먼트를 통한 중재군에서 가장 큰 증가의 폭을 보였다. 따라서 병원성 요인의 근육에 대한 직접적인 접근이 아닌 심리학적인 요소에 입각한 시청각적 엔터테인먼트를 통해 근육에 대한 통증역치에 긍정적인 영향이 보였지만 통계학적으로 유의하지 않았던 정신생리학적 변수와 뇌파에도 긍정적인 평균값의 변화량이 관찰되었다. 이를 통해 긴장성 두통의 관리에 있어 시청각적인 자극은 고려되어야 한다고 제언한다.

• 대한물리치료과학회지
• /
• 제31권2호
• /
• pp.63-74
• /
• 2024

Background: This study aimed to determine the effects of static stretching on the pain and range of motion (ROM) of shoulder joints in middle aged women patients with frozen shoulders. Design: One group pretest-posttest design Methods: The participants were 15 middle aged women patients with frozen shoulders in their 40s to 60s. Subjective and objective pain and joint ROM(range of motion) were measured, and the static stretching intervention consisted of 15 minutes of flexion, abduction and external rotation stretching. Results: The results of this study indicated that the daily pain of shoulder joints and pressure pain thresholds of the muscles surrounding the shoulder joints were generally improved after the intervention with the static stretching, for which significant differences were observed (p<0.05). The ROM of shoulder joint flexion, abduction, and external rotation was significantly increased (p<0.05) after the intervention with the static stretching. Conclusion: Static stretching intervention in patients with frozen shoulders relieved shoulder joint pain and had positive effects on the ROM of shoulder joints. Thus, the application of static stretching in middle aged womenpatients who experience severe pain could be effective at enhancing the function of shoulder joints without pain.