Comparison of the Muscle Activities of Upper Trapezius and Middle Deltoid between Subjects with and without Elevation of Shoulder Girdle during Arm Elevation

( Jong-hyuck Weon ),( Do-young Jung ) 대한물리치료학회 2012 대한물리치료학회지 Vol.24 No.6

Purpose: Muscle imbalance between upper trapezius (UT) and serratus anterior (SA) during arm elevation is a factor causing shoulder dysfunction. However, there is no study to compare the muscle activities of the UT and middle deltoid (MD). The purpose of this study was to compare the muscle activities of the UT and MD between with and without elevation of shoulder girdle (ESG) during shoulder abduction. Methods: The subjects without (control group=9) or with (ESG group=8) participated in this study. The muscle activities of the UT and MD were measured using a electromyography during 90o shoulder abducted position in both group. The data in middle of 3-second of the 5-second periods were used. The mean value of three trials was used in the data analysis. For each muscle, independent t-tests were performed to compare for group differences. Results: The muscle activity of UT was significantly greater in ESG group, compared to that of the control group (p<0.05). The muscle activity of MD was significantly smaller in ESG group, compared to that of the control group (p<0.05). Conclusion: These findings showed that low muscle activation of MD as well as SA may contribute to hyperactivity of UT during arm elevation.

Comparison of the Muscle Activities of Upper Trapezius and Middle Deltoid between Subjects with and without Elevation of Shoulder Girdle during Arm Elevation

Weon, Jong-Hyuck,Jung, Do-Young The Korean Society of Physical Therapy 2012 대한물리치료학회지 Vol.24 No.6

Purpose: Muscle imbalance between upper trapezius (UT) and serratus anterior (SA) during arm elevation is a factor causing shoulder dysfunction. However, there is no study to compare the muscle activities of the UT and middle deltoid (MD). The purpose of this study was to compare the muscle activities of the UT and MD between with and without elevation of shoulder girdle (ESG) during shoulder abduction. Methods: The subjects without (control group=9) or with (ESG group=8) participated in this study. The muscle activities of the UT and MD were measured using a electromyography during $90^{\circ}$ shoulder abducted position in both group. The data in middle of 3-second of the 5-second periods were used. The mean value of three trials was used in the data analysis. For each muscle, independent t-tests were performed to compare for group differences. Results: The muscle activity of UT was significantly greater in ESG group, compared to that of the control group (p<0.05). The muscle activity of MD was significantly smaller in ESG group, compared to that of the control group (p<0.05). Conclusion: These findings showed that low muscle activation of MD as well as SA may contribute to hyperactivity of UT during arm elevation.

Effect of Calcaneal Taping on Peak Plantar Pressure of Forefoot and Rearfoot during Gait

( Jong-hyuck Weon ),( Goen-su Kim ),( Do-young Jung ) 대한물리치료학회 2015 대한물리치료학회지 Vol.27 No.6

Purpose: The purpose of this study was to determine the effects of calcaneal taping on peak plantar pressure of rearfoot and forefoot while walking. Methods: Fifteen healthy subjects with normal feet participated in this study. Inclusion criteria were as follows: (1) no disturbance of gait and foot pain, (2) normal range of motion of ankle joint, (3) no foot deformity. Pedoscan was used for recording of plantar pressure data during walking. The participants walked along a 12-m walkway before and after application of calcaneal taping. The plantar pressure gait was measured 3 times under barefoot and calcaneal taping conditions randomly at a speed practiced with the metronome during gait. The peak plantar pressure data were calculated for medial and lateral areas of the rearfoot and forefoot. The paired t-test was used to determine significant differences in peak plantar pressure of rearfoot and forefoot before and after application of calcaneal taping. A p-value less than 0.05 was accepted as significant. Results: The calcaneal taping resulted in statistically significant decreases in peak plantar pressure of the rearfoot (medial side: p=0.03; lateral side: p=0.01). However, there were no significant changes in peak plantar pressure of the forefoot (medial side: p=0.45; lateral side: p=0.40). Conclusion: The calcaneal taping is recommended to reduce plantar pressure of the rearfoot in weight-bearing activities in subjects with plantar heel pain caused by atrophy of the fat pad.

Effect of Calcaneal Taping on Peak Plantar Pressure of Forefoot and Rearfoot during Gait

Weon, Jong-Hyuck,Kim, Goen-Su,Jung, Do-Young The Korean Society of Physical Therapy 2015 대한물리치료학회지 Vol.27 No.6

Purpose: The purpose of this study was to determine the effects of calcaneal taping on peak plantar pressure of rearfoot and forefoot while walking. Methods: Fifteen healthy subjects with normal feet participated in this study. Inclusion criteria were as follows: (1) no disturbance of gait and foot pain, (2) normal range of motion of ankle joint, (3) no foot deformity. Pedoscan was used for recording of plantar pressure data during walking. The participants walked along a 12-m walkway before and after application of calcaneal taping. The plantar pressure gait was measured 3 times under barefoot and calcaneal taping conditions randomly at a speed practiced with the metronome during gait. The peak plantar pressure data were calculated for medial and lateral areas of the rearfoot and forefoot. The paired t-test was used to determine significant differences in peak plantar pressure of rearfoot and forefoot before and after application of calcaneal taping. A p-value less than 0.05 was accepted as significant. Results: The calcaneal taping resulted in statistically significant decreases in peak plantar pressure of the rearfoot (medial side: p=0.03; lateral side: p=0.01). However, there were no significant changes in peak plantar pressure of the forefoot (medial side: p=0.45; lateral side: p=0.40). Conclusion: The calcaneal taping is recommended to reduce plantar pressure of the rearfoot in weight-bearing activities in subjects with plantar heel pain caused by atrophy of the fat pad.

익상견갑의 평가를 위한 "Scapulometer" 의 신뢰도 연구

원종혁(Jong-hyuck Weon),최홍식(Houng-sik Choi),권혁철(Hyuk-cheol Kwon) 한국전문물리치료학회 2010 한국전문물리치료학회지 Vol.17 No.2

This study was undertaken to develop the scapulometer, a measuring tool for scapular winging, and to determine the reliability of scapulometer. Thirty subjects with scapular winging greater than 2 em participated in this study. Two examiners measured scapular winging using the scapulometer. Standardized measurement position of each subject was as follows: neutral position of shoulder and wrist, 90도 flexion of elbow, and cuff weight of 5% and 10% of body weight (BW) to neutral wrist. The interrater and intrarater reliability were calculated with an intraclass correlation coefficient (ICC) with 95% confidence interval(CI) and standard error of measurement (SEM) at 5% BW and 10% BW. The level of scapular winging was tested between 5% BW and 10% BW with a paired t-test. The interrater reliability was shown to be high at 5% BW (ICC(2,k)=.955, 95% CI=.900~.979,SEM=.07) and at 10% BW (ICC(2,k)=.968, 95% CI=.930~.985,SEM=.06). The intrarater reliability was shown to be high at 5% BW (ICC(2,k)=.921, 95% CI=.842~.961,SEM=.09) and at 10% BW(ICC(2,k)=.906,95% CI=.813~.954,SEM=.10). The level of scapular winging was significantly different between 5% BW and 10% BW. Conclusively, it is demonstrated that the scapulometer is an objective and qualitative measurement tool for scapular winging.

가드너씨 증후군에 동반된 비전형적 선천성 망막색소상피비대증 1 례

노원석(Weon Seuk Rohr),윤준근(Jun Keun Yoon),이석준(Seok Joon Lee),이종혁(Jong Hyuck Lee) 대한안과학회 2000 대한안과학회지 Vol.41 No.11

Can Abdominal Drawing-In Maneuver Using a Pressure Biofeedback Unit Change Muscle Recruitment Pattern During Prone Hip Extension?

( Jae Seop Oh ),( Jong Hyuck Weon ),( Heon Seock Cynn ),( Oh Yun Kwon ) 한국전문물리치료학회 2006 한국전문물리치료학회지 Vol.13 No.4

Effects of Activation of Gluteus Maximus and Abdominal Muscle using EMG Biofeedback on Lumbosacral and Tibiocalcaneal Angles in Standing Position

Koh, Eun-Kyung,Weon, Jong-Hyuck,Jung, Do-Young The Korean Society of Physical Therapy 2013 대한물리치료학회지 Vol.25 No.6

Purpose: The purpose of the present study was to determine the effects of activation of gluteus maximus (Gmax) and abdominal muscle using EMG biofeedback on lumbosacral and tibiocalcaneal angles in standing position. Methods: Fourteen healthy subjects with normal feet participated in the present study. Electromyographic (EMG) biofeedback using visual cue was used to activate the external oblique (EO) and Gmax. The lumbosacral and tibiocalcalcaneal angles were measured by electronic goniometers. All the subjects were instructed to activate the Gmax and EO monitoring increasing amounts of the muscle activities in each muscle. The lumbosacral and tibiocalcaneal angles were collected in three trials during resting and activation of each muscle using EMG biofeedback in standing position. The mean value of three trials was used in the data analysis. A paired-t test was used to compare the lumbosacral and tibiocalcaneal angles between resting and activation of the Gmax and EO using EMG biofeedback. Results: The lumbosacral and tibiocalcaneal angles were significantly less in the resting compared to activation using EMG biofeedback (p<0.05). Conclusion: The activaition of Gmax and abdominal muscles using EMG biofeedback play role to control the pronation of subtalar joint during the weight-bearing.

Effects of Activation of Gluteus Maximus and Abdominal Muscle using EMG Biofeedback on Lumbosacral and Tibiocalcaneal Angles in Standing Position

( Eun-kyung Koh ),( Jong-hyuck Weon ),( Do-young Jung ) 대한물리치료학회 2013 대한물리치료학회지 Vol.25 No.6

Purpose: The purpose of the present study was to determine the effects of activation of gluteus maximus (Gmax) and abdominal muscle using EMG biofeedback on lumbosacral and tibiocalcaneal angles in standing position. Methods: Fourteen healthy subjects with normal feet participated in the present study. Electromyographic (EMG) biofeedback using visual cue was used to activate the external oblique (EO) and Gmax. The lumbosacral and tibiocalcalcaneal angles were measured by electronic goniometers. All the subjects were instructed to activate the Gmax and EO monitoring increasing amounts of the muscle activities in each muscle. The lumbosacral and tibiocalcaneal angles were collected in three trials during resting and activation of each muscle using EMG biofeedback in standing position. The mean value of three trials was used in the data analysis. A paired-t test was used to compare the lumbosacral and tibiocalcaneal angles between resting and activation of the Gmax and EO using EMG biofeedback. Results: The lumbosacral and tibiocalcaneal angles were significantly less in the resting compared to activation using EMG biofeedback (p<0.05). Conclusion: The activaition of Gmax and abdominal muscles using EMG biofeedback play role to control the pronation of subtalar joint during the weight-bearing.

Intra- and Inter-rater Reliabilities of Infrasternal Angle Measurement

Kim, Moon-Hwan,Weon, Jong-Hyuck The Korean Society of Physical Therapy 2015 대한물리치료학회지 Vol.27 No.3

Purpose: The purpose of this study was to propose a new reference point for measurement of the infrasternal angle and to investigate the intra- and inter-rater reliabilities of infrasternal angle measurement using photographs. Methods: Twenty-four healthy male college students participated as subjects in this study. Photographs were taken of subjects in two postures, one standing with the shoulders relaxed and one standing with the shoulders at $150^{\circ}$ abduction. All photographs were analyzed using Image J software. Raters used the photographs to measure the infrasternal angle between the xiphoid process, the medial margin of rib and navel on the right and left sides. The reliability of the infrasternal angle measurement was assessed by means of intraclass correlation coefficients [ICC (3,1)]. The level of statistical significance was set at p<0.05. Results: The intra- and inter-rater reliabilities of the infrasternal angle measurement for the right side at rest were excellent (ICC=0.866 and 0.813, respectively), as were those for the left side at rest (ICC=0.919 and 0.846, respectively). At $150^{\circ}$ shoulder abduction, the intra- and inter-rater reliabilities for measurement of the infrasternal angle on the right side were excellent (ICC=0.972 and 0.778, respectively), as were those for the left side (ICC=0.914 and 0.826, respectively). Conclusion: These findings suggest that this technique can be successfully used to measure the infrasternal angle, thus suggesting a new reference point for determining the length of the internal oblique and external oblique muscles in clinical situations.