3차원 동작분석법을 활용한 골프웨어 평가를 위한 기초연구 -상체 동작범위를 중심으로-

정혜원 ( Hye Won Chung ),신주영 ( Ju Young Annie Shin ),남윤자 ( Yun Ja Nam ) 한국의류산업학회 2016 한국의류산업학회지 Vol.18 No.3

The purpose of this study is to analyze joint angle for a range of swing motion derived through 3D motion analysis in order to design the ergonomic golf wear, use it for evaluation method of apparel fit to improve exercise functionality and provide the basic materials necessary for designing clothes. In order to do this, the subjects for this study were 3 men of age 20s. The data for a range of motion of golf swing were collected by using equipment for 3D motion analysis and then were used for analysis of joint angles and evaluation method of apparel fit. Range of motion was derived through 3D motion analysis of golf swing motion and joint angles for items of joint motion item and of X, Y, and Z-axis were calculated, respectively. In order to set the evaluation questions for evaluation of apparel fit, to find a range of motion at the maximal value and the minimal value of swing motion. As a result, during the swinging motion, neck extension, right shoulder extension, right/left elbow extension, right/left elbow supination did not appear. Items of joint motion showing the maximum at range of each swing motion were applied into 55 questions and consisted. The results of this study were meaningful as a basic study to apply 3D motion analysis to the fashion industry. It’s expected to be used to design functional clothing.

Hip Range of Motion Estimation using CT-derived 3D Models

Yeon Soo Lee 한국방사선학회 2018 한국방사선학회 논문지 Vol.12 No.1

본 연구에서는 CT영상기반 3차원 고관절모델을 이용한 컴퓨터시뮬레이션을 통해서 고관절의 운동범위 (Range of Motion)를 측정하는 방법을 제시하였다. 본 연구에서는 그 측정방법에 대한 기술적인 사항을 제시하고, 그 기술이 재현성 있게 실현할 수 있도록 대퇴골두 중심점의 결절, 대퇴골 외전(Abduction)/내전(adduction)회전축, 굽힙(flexion)/신전(extension) 회전축을 정의하고 측정하는 명확한 방법을 제시하였다. 외전각은 해부학적인 시상면(Sagittal plane)상의 Anterior-Posterior축에 대해 아래쪽(Inferior)면으로부터 Lateral 쪽으로의 회전각으로 정의된다. 최대외전각은 대퇴골두가 엉덩이뼈(Pelvis)의 절구(Acetabulum)의 테두리와 겹치지 않고 Anterior-Posterior축을 중심으로 회전할 수 있는 최대 외전각으로 결정된다. 굴곡각은 해부학적인 관상면(Coronal plane)상의 Medial-Lateral축에 대해 아래쪽(Inferior)면으로부터 회전각으로 정의된다. 최대굴곡각은 대퇴골이 Medial-Lateral축을 중심으로 엉덩이뼈(Pelvis)의 절구(Acetabulum)의 테두리와 겹치지 않고 회전할 수 있는 최대 굴곡각으로 결정된다. 정상고관절에 비해 인공고관절술을 받은 해당 환자의 경우, 외전에서는 60도 정도, 굽힘에서는 4도 정도 운동범위가 줄어들 수 있다는 예측이 나왔다. 본 연구에서 행한 시뮬레이션을 해보고 외전의 경우 운동범위의 감소가 예측되므로, 대퇴골두를 조금 큰 것을 고르거나 대퇴골목부의 길이 (femoral neck offset)를 길게 시술해야 할 필요가 있음을 의미한다. The success of the total hip arthroplasty is revealed as initial stability, range of motion, and long term pain, etc. Depending upon choice of implantation options such as femoral neck offset, diameter of the femoral head, the lateral opening tilt. Especially the impingement between femoral head component and acetabular cup limits the range of motion of the hip. In this sense, estimation or evaluation of the range of motion before and after the total hip arthroplasty is important. This study provides the details of a computer simulation technique for the hip range of motion of intact hip as well as arthroplasty. The suggested method defines the hip rotation center and rotation axes for flexion and abduction, respectively. The simulation uses CT-based reconstructed 3D models and an STL treating software. The abduction angle of the hip is defined as the superolateral rotation angle from sagittal plane. The flexion angle of the hip is defined as the superoanterior angle from the coronal plane. The maximum abduction angle is found as the maximum rotation angle by which the femoral head can rotate superolaterally about the anterior-posterior axis without impingement. The maximum flexion angle is found as the maximum rotation angle by which the femoral head can rotate superoanteriorly about the medial-lateral axis without impingement. Compared to the normal hip, the total hip replacement hip showed decreased abduction by 60 degrees and decreased flexion by 4 degrees. This measured value implies that the proposed measurement technique can make surgeons find a modification of increase in the femoral neck offset or femoral head, to secure larger range of motion.

CT기반 3차원 모델을 이용한 고관절 운동범위 예측

이연수(Yeon Soo Lee) 한국방사선학회 2018 한국방사선학회 논문지 Vol.12 No.1

본 연구에서는 CT영상기반 3차원 고관절모델을 이용한 컴퓨터시뮬레이션을 통해서 고관절의 운동범위 (Range of Motion)를 측정하는 방법을 제시하였다. 본 연구에서는 그 측정방법에 대한 기술적인 사항을 제시하고, 그 기술이 재현성 있게 실현할 수 있도록 대퇴골두 중심점의 결절, 대퇴골 외전(Abduction)/내전(adduction)회전축, 굽힙(flexion)/신전(extension) 회전축을 정의하고 측정하는 명확한 방법을 제시하였다. 외전각은 해부학적인 시상면(Sagittal plane)상의 Anterior-Posterior축에 대해 아래쪽(Inferior)면으로부터 Lateral 쪽으로의 회전각으로 정의된다. 최대외전각은 대퇴골두가 엉덩이뼈(Pelvis)의 절구(Acetabulum)의 테두리와 겹치지 않고 Anterior-Posterior축을 중심으로 회전할 수 있는 최대 외전각으로 결정된다. 굴곡각은 해부학적인 관상면(Coronal plane)상의 Medial-Lateral축에 대해 아래쪽(Inferior)면으로부터 회전각으로 정의된다. 최대굴곡각은 대퇴골이 Medial-Lateral축을 중심으로 엉덩이뼈(Pelvis)의 절구(Acetabulum)의 테두리와 겹치지 않고 회전할 수 있는 최대 굴곡각으로 결정된다. 정상고관절에 비해 인공고관절술을 받은 해당 환자의 경우, 외전에서는 60도 정도, 굽힘에서는 4도 정도 운동범위가 줄어들 수 있다는 예측이 나왔다. 본 연구에서 행한 시뮬레이션을 해보고 외전의 경우 운동범위의 감소가 예측되므로, 대퇴골두를 조금 큰 것을 고르거나 대퇴골목부의 길이 (femoral neck offset)를 길게 시술해야 할 필요가 있음을 의미한다. The success of the total hip arthroplasty is revealed as initial stability, range of motion, and long term pain, etc. Depending upon choice of implantation options such as femoral neck offset, diameter of the femoral head, the lateral opening tilt. Especially the impingement between femoral head component and acetabular cup limits the range of motion of the hip. In this sense, estimation or evaluation of the range of motion before and after the total hip arthroplasty is important. This study provides the details of a computer simulation technique for the hip range of motion of intact hip as well as arthroplasty. The suggested method defines the hip rotation center and rotation axes for flexion and abduction, respectively. The simulation uses CT-based reconstructed 3D models and an STL treating software. The abduction angle of the hip is defined as the superolateral rotation angle from sagittal plane. The flexion angle of the hip is defined as the superoanterior angle from the coronal plane. The maximum abduction angle is found as the maximum rotation angle by which the femoral head can rotate superolaterally about the anterior-posterior axis without impingement. The maximum flexion angle is found as the maximum rotation angle by which the femoral head can rotate superoanteriorly about the medial-lateral axis without impingement. Compared to the normal hip, the total hip replacement hip showed decreased abduction by 60 degrees and decreased flexion by 4 degrees. This measured value implies that the proposed measurement technique can make surgeons find a modification of increase in the femoral neck offset or femoral head, to secure larger range of motion.

슬링을 이용한 신경근 훈련이 중년여성의 상지기능장애 회복에 미치는 효과

유진영 ( Jinyoung You ),김은국 ( Eunkuk Kim ) 한국체육대학교 체육과학연구소 2019 스포츠사이언스 Vol.36 No.2

목적: 본 연구는 40∼69세의 중년여성에서 슬링을 이용한 신경근 훈련과 복합운동이 상지통증과 관절가동범위에 미치는 효과를 알아보기 위해 수행되었다. 방법: 연구참여자는 슬링을 이용한 신경근 훈련과 복합운동그룹 (n=6, NM+Complex)과 복합운동 그룹(n=6, Control)으로 구성되었으며, 연구는 4주 동안 진행되었다. NM+Complex그룹은 슬링을 이용해서 신경근 운동을 주 2회, 자세를 5∼8초간 유지하여, 8회씩 3세트 실시하였으며, 스트레칭은 부하 없이 천천히 15회씩 3세트 실시하였고, 저항 운동은 주 1회 15RM의 부하로 15회씩 3세트 실시하였다. Control그룹은 저항 운동을 주 3회 15RM의 부하로 15회씩 3세트 실시하였고, 스트레칭을 부하없이 천천히 15회씩 3세트 실시하였다. 트레이닝 전, 후의 상지 통증은 DASH 설문지로 관절가동 범위는 측각기로 측정하여 비교하였다. 결과: 1. NM+Complex그룹의 양측 견관절가동범위 증가는 굴곡에서 측정시기에 따른 차이가 있었으며(우측:p=.001, 좌측:p=.003), 좌측 견관절에서 외전(p=.030)과 내회전(p=.030)에서 측정시기에 따른 가동범위 증가에 차이가 있었다. 2. Control그룹의 양측 견관절 가동범위의 증가는 굴곡(우측:p=.027, 좌측:p=.005)과 외전(우측:p=.029, 좌측:p=.009)에서 측정시기에 따른 차이가 있었다. 좌측 견관절에서 신전(p=.026), 내회전(p=.028)에서 측정시기에 따른 가동범위 증가에 차이가 있었다. 3. DASH 설문지로 통증의 변화를 확인한 결과 NM+Complex그룹은 측정시기에 따른 차이가 없었으며, Control그룹은 측정시기에 따른 차이가 있었다(p=.043). 그룹 간의 차이는 없었다(p=.235). 결론: 두 그룹 간 견관절 가동범위 증가와 통증의 감소의 차이는 없었다. Control그룹에서 견관절 신전의 측정시기에 따른 관절가동범위의 증가와 통증 감소가 나타나 견관절 신전의 가동범위의 회복과 통증의 감소를 위해서는 복합운동만을 적용하는 것이 더 효과적일 것이다. 그러나 복합운동만을 적용하기 어려운 경우 견관절의 굴곡과 외전, 내회전에서 관절 가동범위 증가를 위해 슬링을 이용한 신경근 훈련을 대체하여 적용한다면 견관절 가동범위 증가를 위해 유용할 것이다. Purpose: The aim of this study was based on age of 40 to 69 women to prove the effects of neuromuscular training and complex training on upper-extremity pain with joint range of motion. Method: We had a NM+Complex group (n=6, age range 50.50±8.76), and a Control group (n=6, age range 59.83±6.43). NM+Complex group executed both neuromuscular training and complex training, but Control group only worked out the complex training. These neuromuscular training and complex training were by sling exercise, twice a week; each time 8 movements with 3 sets, maintain posture for 5 to 8 seconds. Stretching exercise operated without any loads, 15 times slowly with 3 sets. Resistance exercise operated once a week with 15RM load, 15times with 3 sets. Comparison before and after upper-extremity pains by DASH Score, and joint range of motion by goniometer. Result: Firstly, in the NM+Complex group, right and left shoulder joint range of motion had significant difference with time interval for measurement on flexion. In case with only left shoulder joint range of motion increase, it showed the difference with time interval for measurement on external and internal rotation. Secondly, in the Control group, left shoulder range of motion had significant difference with time interval for measurement on flexion and external rotation. If only left shoulder joint range of motion increase, it showed the difference on extensor and internal rotation. Lastly, upper-extremity pain differences by DASH Score showed no big differences on NM+Complex group, but the Control group showed significant difference. Conclusion: The result of this research is, based on 40 to 69 age of women, to release upper-extremity pain and increase joint range of motion, just taking a complex training is not quite efficient than taking both neuromuscular training and complex training.

마사지 및 정적 스트레칭이 20대 정상 성인의 경부 관절가동범위에 미치는 효과

권원안(Kwon, Won-An),김동대(Kim, Dong-Dae),이재홍(Lee, Jae-Hong) 한국산학기술학회 2010 한국산학기술학회논문지 Vol.11 No.11

본 연구의 목적은 20대의 정상 성인에서 경부의 관절가동범위와 마사지 및 정적 스트레칭이 관절가동범위 에 미치는 영향을 측정하는 것이다. 근골격계와 신경계의 질환이 없는 100명(마사지그룹=50, 스트레칭그룹=50)을 대 상으로 실시하였다. 마사지와 정적 스트레칭은 흉쇄유돌근, 사각근, 승모근, 반극근, 판상근, 후두하근, 다열근과 회선 근에 적용되었다. 두 그룹은 주 3회의 중재를 받았다. 중재 시간은 10분이었다. 마사지그룹은 경찰법, 유날법 및 스 트라이핑 마사지가 사용되었고, 스트레칭그룹은 정적 스트레칭이 사용되었다. 경부의 가동범위 측정도구는 경부의 8 가지 동작(후두하 굽힘과 폄, 경부의 굽힘과 폄, 왼쪽 옆굽힘과 오른쪽 옆굽힘, 왼쪽 돌림과 오른쪽 돌림)을 분석하 기 위하여 사용되었다. 통계학적 분석결과는 다음과 같다. 첫째, 정상적인 경부의 관절가동범위는 남자에서 후두하 굽힘과 폄이 2.39°와 38.36°, 경부의 굽힘과 폄이 54.11°와 69.39°, 왼쪽과 오른쪽의 옆굽힘이 43.50°와 41.28°, 왼쪽 과 오른쪽의 돌림이 66.39°와 65.94°로 나타났고, 여자에서는 후두하 굽힘과 폄이 5.14°와 36.47°, 경부의 굽힘과 폄 이 55.92°와 71.22°, 왼쪽과 오른쪽의 옆굽힘이 43.34°와 41.06°, 왼쪽과 오른쪽의 돌림이 69.38°와 68.63°로 나타났 다. 둘째, 후두하 굽힘, 왼쪽 돌림과 오른쪽 돌림에서 여성이 남성보다 더 높은 관절가동범위를 보였다(p<0.05). 셋째, 마사지군과 스트레칭군은 치료 후에 모든 항목에서 관절가동범위의 증가를 보였지만 두 그룹간의 비교에서는 유의한 차이를 보이지 않았다(p<0.05). 위의 결과는 마사지와 정적 스트레칭이 경부 근육의 신장 및 이완을 통해 가동범위를 증가시키는 적당한 방법이라는 것을 제시한다. 그리고 경부의 가동범위를 조사하는 연구의 기초로 제공될 수 있을 것이다. The purpose of this study was to estimate the cervical range of motion and the effects of massage and static stretching in their 20s of normal adult. One hundred participants(massage=50, stretching=50) with no musculoskeletal and nervous system problems volunteered for this study. Massage and static stretching were applied to sternocleidomstoid, scalenes, trapezius, semispinalis, splenius, suboccipital, multifidi and rotatores. Both groups received intervention for 3 times in a week. The time the intervention was applied was for 10minutes. Effleurage, petrissage and stripping technique was applied to massage group and static stretching technique was applied to stretching group. The cervical range of motion (CROM) instrument was used to measure eight cervical motions (suboccipital flexion, suboccipital extension, neck flexion and extension, and left and right lateral flexion, left and right rotation). As a result of making a statistical analysis of the data, the following findings were given: First, normal cervical range of motion revealed; suboccipital flexion(2.39°) and extension(38.36°), flexion(54.11°) and extension(69.39°), lateral flexion on left(43.50°) and right(41.28°), rotation on left(66.39°) and right(65.94°) in male and suboccipital flexion(5.14°) and extension(36.47°), flexion(55.92°) and extension(71.22°), lateral flexion on left(43.34°) and right(41.06°), rotation on left(69.38°) and right(68.63°) in female. Second, women had greater range of motions than men in suboccipital flexion, left and right rotation(p<0.05). Third, it showed significantly increasing cervical range of motion in all directions within groups following treatments but not between groups(p<0.05). Our results suggest that massage and static stretching are an appropriate intervention to increase cervical range of motion by muscle relaxation and stretching and may be provided a basis for future studies investigating the cervical range of motion.

관성측정장치를 이용한 경추관절 가동범위 측정의 검사 내 반복성 및 검사-재검사 신뢰도 연구

김현호,김경욱,박지민,김은석,이민준,강중원,이상훈,박영배 대한침구의학회 2013 대한침구의학회지 Vol.30 No.4

Objectives : To assess the test-retest reliability and the intratest repeatability in measuring the cervical range of motion of healthy subjects with wireless microelectromechanical system inertial measurement unit(MEMS-IMU) system and to discuss the feasibility of this system in the clinical setting to evaluate the cervical spine musculoskeletal . Methods : 12 healthy people who were evaluated as no- or mild-disability with neck disability index were participated. Their cervical motion were measured with IMU twice in consecutive two days for the test-retest reliability study. Intratest repeatability was calculated in the two tests separately. The calculated intraclass correlation coefficients(ICC) were discussed and compared with the those of the previous studies. Results : Cervical range of motion data were acquired and statistically processed: left rotation(61.64°), right rotation(65.12°), extension(61.98°), flexion(52.81°), left bending(39.31°), right bending(41.08°). ICCs were 0.77∼0.98(intratest repeatability) and 0.74∼0.93 (test-retest reliability) in the primary motion. In the coupling motion, intratest repeatability ICCs were 0.93∼0.99(transverse primary plane), 0.88∼0.97(saggital primay plane), and 0.77∼0.93(coronal primary plane). Test-retest reliability of coupling motion were 0.90∼0.97(transverse primary plane), 0.00∼0.72(saggital primary plane), and 0.04∼0.76(coronal primary plane). Conclusions : Several types of range-of-motion devices are now on use in many fields including medicine, but the practicality of the devices in clinical use is questionable for the convenient and economical aspects. In this study, we presented the reliability of cervical range of motion test with the developed wireless MEMS-IMU system and discussed its potential utility in clinical use.

수지 첨부 절단창의 재접합술 시 원위지 관절 고정과 운동 범위의 관계

한승규,노시영,김진수,이동철,기세휘,양재원,Han, Seung-Kyu,Roh, Si-Young,Kim, Jin-Soo,Lee, Dong-Chul,Ki, Sae-Hwi,Yang, Jae-Won 대한미세수술학회 2011 Archives of reconstructive microsurgery Vol.20 No.1

Purpose: In the process of replantation of the amputated fingertips, the primary concern was given to survival of the amputees, while the functional aspect of digits after the surgery has been easily neglected. Although an internal fixation with a K-wire is often a part of replantation of the amputated fingertips, little consideration had been given to the study of relationship between distal interphalangeal joint fixation and post operative range of motion. A comparative study in relation to post operative range of motion was done on two different groups, one group with K-wire insertion and the other group without a K-wire insertion at the distal interphalangeal joint. Materials and Methods: The study was done on the cases of a single digit amputation conducted at our institute (the age in the range of 10 to 60) in about four-year of time span from March of 2005 to March of 2009. The cases with a thumb replantation, osteomyelitis or articular surface injury have been excluded from this study. The cases of both head and shaft fracture, except the insertion site of tendon, of distal phalanx of internal fixation with a single K-wire were reviewed for this study. A group of 24 cases without distal interphalangeal joint fixation in comparison to a group of 22 cases with distal interphalangeal joint fixation was reviewed to assess the postoperative range of motion at distal interphalangeal joint on the 6th week after the surgery. And, on the 30th month after the surgery, a group of 10 cases without distal interphalangeal joint fixation in comparison to a group of 10 cases with joint fixation was reviewed. A K-wire was removed in about 5 weeks after the fracture was reunited under the radiographic image, immediately followed by a physical therapy. Result: The active range of motion for a group without interphalangeal joint fixation was measured $49.0^{\circ}$ on average, while $28.6^{\circ}$ was measured for a group with interphalengeal fixation on the 6th week after the surgery. On the 30th month after the surgery, the active range of motion was measured $52.0^{\circ}$ and $55.0^{\circ}$ on average for a group without and with interphalangeal fixation respectively. Conclusion: In the process of replantation of the amputated fingertips, short-term(on the 6th week) improvement of postoperative active motion of range can be expected in the cases without distal interphalangeal fixation in comparison to the cases of interphalangeal joint fixation with a K-wire. However, there seems to be no difference on motion of range in a long-term (on the 30th month) follow up period.

목 폄 근력강화운동과 가슴 폄 근력강화운동이 머리전방자세와 목 관절가동범위에 미치는 영향

원동용,김소연,김요셉,박지혜,안유경,이윤경,장은영,정수지,최승화,형인혁,Won, Dong-Yong,Kim, So-Yeon,Kim, Yo-Sep,Park, Ji-Hye,Ahn, Yoo-Kyung,Lee, Yoon-Kyeng,Jang, Eun-Young,Jeong, Su-Ji,Choi, Seung-Hwa,Hyeong, In-Hyeok 대한물리치료과학회 2011 대한물리치료과학회지 Vol.18 No.2

Purpose: The purpose of this study is to acknowledge the effects that have the strength exercise done only on the neck extensor, only on the thoracic extensor, and both the neck and the thoracic extensor on forward head posture(FHP) and cervical range of motion. Also is to discover which of the exercise is the most effective. Method: This experiment will be done by selecting 40 people who have 16cm or more FHP and they will be divided into four groups: three experimental groups and a control group. The first experimental group will do only the neck extensor strength exercise(NESE). The second experimental group will do only the thoracic extensorstrength exercise(TESE) and the third experimental group will do both the NESE and the TESE. The experimental groups will make a day three times each ten sets of extensor isometric strength exercise but the time will be increased from 4 to 6 and8 seconds until it will be done the ten sets. Then after four weeks, they will be compared which had the best results for the FHP and the cervical range of motion. Result: After the experiment, it was compared the experimental groups with the control group. Every experimental group had an improvement on their FHP and cervical range of motion. However, the only NESE and the only TESE did not have a significantly difference(p>.05). Only the group who did both the NESE and the TESE had a sign ificantly improvement compared to the control group. Conclusion: 1. The only NESE and the only TESE seem that had a positive effect on FHP and cervical range of motion. However, it cannot be conclude that it is effective. 2. When both the NESE and the TESE are done, it is showed statistically a significant difference(p<.05) on FHP and cervical range of motion. The refore, it would be note worthy if this exercise is used to improve the FHP and the cervical range of motion.

흉추 및 요추의 운동 측정 기기의 개발 및 이를 이용한 정상인에서의 흉추 및 요추의 운동 특성 분석

이춘기,김영은,염진섭,장봉순 대한척추외과학회 1997 대한척추외과학회지 Vol.4 No.2

Study Design : External linkage type of spine motion analyzer and special programs for calculation of the relative angular motion and graphical display were developed and used to measure relative thoracic and lumbar motion patterns in healthy subjects. Objectives : To examine the dynamic relationship of thoracic and lumbar spines during various trunk motions and to measure main and coupling motions in three-dimensional spinal kinematics. Summary of Literature Review : Many kinds of methods, such as inclinometer, stereoradiography, electrogoniometer, cadaveric study etc., were introduced for measuring lumbar spine motion. But, there is no reliable method for measuring accurate dynamic three-dimensional motion patterns of whole thoracic and lumbar spines. Materials and methods : Thirty healthy men, ranging in age from 21 to 29 years, participated in the study. The developed device was tested to measure spine motion patterns in flexion, extension, lateral bending and axial rotation. Results : The average range of motion for flexion was 71.30˚ 16.54˚(lumbar/thoracic), for extension 25.1l˚/12.67˚ for one side lateral bending 27.42˚/31.71˚ for one side axial rotation 30.86˚/ 24.38˚ There were more coupling motions in lateral bending and axial rotation. than in flexion and extension. Coupling motion pattern were found to be relatively consistent among subjects in active axial rotation, and the direction of coupling motion was flexion plus ipsilateral side bending Conclusions : It was rather simple and reliable method for spine motion analysis. There were similarities between motion patterns of lumbar and thoracic spine. But, range of motion in sagittal plane was much greater in lumbar spine than in thoracic.

Immediate Effect of Sustained Stretching Exercises with Far Infrared on the Ankle Range of Motion and Muscle Tone in Patients with Stroke

윤봉섭,박신준 대한물리치료학회 2019 대한물리치료학회지 Vol.31 No.1

Purpose: The spasticity of stroke patients decreases the ankle range of motion and increases the gastrocnemius muscle tone. This study examined the effects of stretching exercise and far infrared irradiation on the ankle function in stroke patients with spasticity. Methods: This study was conducted on 20 stroke patients admitted to J General Hospital, who were divided into a study group (stretching exercise with far infrared) and control group (stretching exercise only). The dorsiflexion range of motion was measured using a smartphone and the medial gastrocnemius muscle tone and stiffness were measured using a Myoton pro. Results: With the exception of the non-paretic gastrocnemius muscle tone in the control group, the medial gastrocnemius muscle tone and stiffness decreased significantly in both groups. In both groups, the dorsiflexion range of motion increased significantly. In addition, the experimental group had a significantly higher dorsiflexion range of motion than the control group. On the other hand, there was no significant difference between the two groups in terms of the medial gastrocnemius muscle tone and stiffness. Conclusion: For stroke patients with spasticity, stretching exercises increased the ankle’s range of motion and decreased the gastrocnemius muscle tone. The addition of heat therapy further increased the ankle’s range of motion. On the other hand, as the sample size was small, future studies should include more subjects.