• Physical Therapy Rehabilitation Science
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• v.4 no.2
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• pp.61-65
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• 2015

Objective: The aim of this study was to objectively evaluate sensory disturbance in cervical spondylosis using grip force and investigate the relationship between the grip force and upper extremity function. Design: Cross-sectional study. Methods: Eleven cervical spondylosis patients with paresthesia conducted grip and lift tasks using a precision grip with the tips of the thumb and index finger on either side. The sum of the grip force used during the first four seconds was calculated and defined as the total grip force. The cutaneous pressure threshold of the fingers, the pinch power, the grip power and three subtests of the Simple Test for Evaluating Hand Function (STEF) were also assessed. Correlations between the total grip force and cutaneous pressure threshold, pinch power, grip power, and STEF subtest times were evaluated. Results: We found that the total grip force correlated with the cutaneous pressure threshold (p<0.05). Moreover, the total grip force of the dominant thumb correlated with the results of the three STEF subtests (p<0.05). There were no significant correlations between the total grip force and pinch/grip powers. Conclusions: We found that the total grip force correlated with cutaneous pressure threshold and upper extremity function. The results suggest that the total grip force could serve as an objective index for evaluating paresthesia in cervical spondylosis patients, and that the impaired ability of the upper extremity function is related to grip force coordination.

• Journal of the Korean Society of Physical Medicine
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• v.3 no.4
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• pp.293-299
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• 2008

Purpose : The purpose of this study was to investigate the effect of color stimuli on the grip power and the pinch power. Methods : For this experimental study, total 59 healthy college students, who were divided into Red color group and Green color group. Each group was assessed before and after color stimuli(10minutes). Subjects were for using standardized positioning with shoulder adducted and neutrally rotated, elbow flexed at 90 degree and the forearm and wrist in neutral position. Results : All the two groups showed significant differences in the variation of grip power and pinch power under color stimuli(P>.05) but there was no significant variation in grip power and pinch power among groups. Conclusion : This study precedes following study which is focused on the proposal of suitable or appropriate color circumstance for treatment room. Further studies are need with more subjects on long-term outcome.

• PNF and Movement
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• v.20 no.1
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• pp.125-134
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• 2022

Purpose: The aim of this study was to establish an association between grip strength and gait variability in the elderly. Methods: The participants in this experiment (n = 20) were aged 65 or older. Power grip and lateral pinch forces were obtained in grip strength tests, and spatiotemporal gait parameters were collected from IMU sensors during 6 min actual walking to test the gait of participants. The collected gait parameters were converted to coefficient of variation (CV) values. To confirm the association between grip strength and gait variability, a partial correlation analysis was conducted in which height, weight, and gait speed were input as controlling variables. Results: Grip power showed a significant negative correlation with the stride length CV (r = -0.52), and the lateral pinch force showed a significant negative correlation with the stance CV (r = -0.65) and swing CV (r = -0.63). Conclusion: This study reveals that gait variability decreases as grip strength increases, although height, weight, and gait speed were controlled. Thus, grip strength testing, a simple aging evaluation method, can help identify unstable gait in older adults at risk of falling, and grip strength can be utilized as a non-invasive measurement method for frailty management and prevention.

• Journal of Korea Entertainment Industry Association
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• v.14 no.3
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• pp.475-482
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• 2020

The abdominal drawing-in maneuver(ADIM), which is performed to strengthen the stabilization muscles of the lumbar, is an exercise method that selectively contracts the TrA and IO by increasing intra-abdominal pressure. In order to check the effect of ADIM in sitting position, which is the most frequently used posture in everyday life, on how to grip power, ADIM was conducted in a sitting position for 30 healthy adults, and then the state was not performed. In each, the grip power was measured to determine how ADIM performed in the sitting position had an effect on grip power and which muscles had the most influence. The muscles mobilized for the electromyography(EMG) measurement were RA, EO, IO/TrA, and ES, which were the most activation lumbar stabilization muscles when ADIM was applied. As a result of the study, the activity on muscles of the lumbar stabilization was significantly increased and the grip power of the muscles was significantly increased than the ADIM in the sitting position. By comparing the measured difference value of each muscle, it was found that any muscle had a greater effect on grip power, but no muscle showed a significant correlation. It is thought that the increase of intra-abdominal pressure did not affect the grip power of a specific muscle. Therefore, if ADIM is performed in a sitting position that is frequently used in everyday life through this study, it will be more effective in increasing the grip power and lumbar stabilization.

• Journal of the Korean Society of Physical Medicine
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• v.1 no.1
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• pp.49-57
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• 2006

Purpose : The Purpose of this study was to pain release and power grip in wrist affect of needle TENS(utilized of TENS in electrotherapy with oriental needle) and ultrasound therapy and taping with carpal tunnel syndrome patients. Methods : To study divided of each groups. each groups were apply to ultrasound therapy for 5 mintus, Taping was attached from wrist joint to elbow joint medial epicondly after maximum extension. needle TENS application was following of median nerve in wrist. Result : 1. The pain was released on needle TENS, ultrasound and taping groups of all(p<.05). 2. Power grip was enhanced in needle TENS and taping groups(p<.05) but ultrasound was no difference compared with before therapy. 3. Compared with needle TENS and taping therapy about pain release was needle TENS groups better than ultrasound groups(p<.05) Conclusion : Needle TENS, taping therapy are more effectable than ultrasound therapy for grip power and pain release. Needle TENS therapy is more effectable than taping therapy for pain release. Therefor, neddle TENS therapy is most effectable for pain release with carpal tunnel syndrome patients.

• The Journal of Korean Physical Therapy
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• v.19 no.1
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• pp.1-9
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• 2007

Purpose: Stenosing tenosynovitis is a stenosing condition of the sheath of the abductor pollicis longus and extensor pollicis brevis tendons at the radial styloid process. The purpose of this study was to investigate the effects of kinesio taping on the pain and grip power in patients with de Quervain's disease. Method: 20 female with de Quervain's disease was recruited. This procedure was performed with or without taping procedure. Pain levels were assessed using a visual analogue scale, and spherical and pinch grip powers were assessed using a dynamometer. Results: 1. Resting pain, Finkelstein test pain, and Tenderness using VAS scale was showed significantly reduced after taping application(p<0.01). 2. Spherical grip power using dynamometer was showed significantly increased after taping application(p<0.01). 3. Pinch grip power using dynamometer was showed significantly increased after taping application(p<0.01). Conclusion: So we thought that kinesio taping therapy had effects on the pain release and grip power increasing to the small or local muscle groups and joints.

• Journal of the Korean Society of Physical Medicine
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• v.4 no.4
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• pp.209-214
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• 2009

Purpose：The purpose of this study are analysis characteristic of grasping power with each different elbow flexion degree and grasping power with each different elbow each different hand position and announcement. Methods：Measuring about 10cm wide open position with both feet for each elbow in the line positions of the $0^{\circ}$, $45^{\circ}$, $90^{\circ}$, $135^{\circ}$, and forearm position of supination, mid position, pronation is of the order. Results：The averge position of maximal grip strength was $0^{\circ}$ of elbow flexion with mid position in male and $90^{\circ}$ of elbow flexion with mid position in female. Grip strength in change of wrist position according to elbow flexion was significant difference(P<0.05). Grip strength in change of wrist position according to elbow flexion by sex was significant difference(P<0.05) Conclusion：When the elbow has flexion with $0^{\circ}$, $45^{\circ}$, $90^{\circ}$, $135^{\circ}$ then grasping power has a intimate relation with forearm position. Grasping power with forearm supination, pronation and mid position also has a intimate relation with elbow flexion.

• The Journal of Korean Physical Therapy
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• v.15 no.4
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• pp.312-318
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• 2003

The purpose of this study were to determine the effect on grip and pinch strength with elbow and wrist angle change. 112 college students, 88 males, and 24 females aged 19 to 34 years, participated in the study. A Grip and pinch strength was measured in two elbow position($0^{\circ}$ and $90^{\circ}$) and three wrist position($80^{\circ},\;0^{\circ},\;23^{\circ}$). The data were analyzed by mean and deviation, and t-test using the PC/SAS system. These results were obtained as follows; 1. There was a more strength grip and pinch power in $0^{\circ}$ than $90^{\circ}$ elbow flexion at three wrist angle. 2. There was a significant high grip and pinch strength in $23^{\circ}$ dorsiflexion among three wrist angle(p<0.01). 3. The grip and pinch strength power was measured higher in male than female every elbow and wrist angle(p<0.01).

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.15 no.4 s.97
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• pp.404-411
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• 2005

To increase accurateness and reliability of the evaluation of power tool vibration transmitted to an operator, it is necessary to measure the grip and feed forces during the measurement of hand-transmitted vibration. In the study a system was invented to measure the vibration and the grip and/or feed force, which consists of a measurement handle and a PC with a data acquisition system and the corresponding software. Strain gauges and an accelerometer were mounted on the handle surface for the simultaneous measurement of the forces and the vibration. The program in the system makes it possible to monitor the grip and feed force during the tool operation so that the operator keeps the applying forces within the pre-determined range. Investigating the vibration total values, frequency-weighted root-mean-square accelerations at the handle, obtained in repetition for each power tool with control of the grip and feed force showed more consistency than those measured without force control. By using the system the experimenter can reduce random error of the measured vibration.

• Journal of the Korean Society of Physical Medicine
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• v.5 no.3
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• pp.467-476
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• 2010

Purpose : This study was performed to understand the relationship between hand and mouth shapes using functional magnetic resonance imaging(fMRI). Methods : Two healthy volunteers without any previous history of physical or neurological illness were recruited. fMRI was done that volunteers was 6 repeated of natural mouth, close mouth and open mouth while power grip and pinch grip movement. Results : Cerebral cortex activation was not well observed for the natural mouth during the power grip exercise. For the closed mouth, the temporal lobe, Broca's area, the prefrontal area related to thinking and judgment, the supplementary motor area, the auditory area and Wernicke's area were activated. For the open mouth, cortical activation was also observed in the temporal lobe, Wernicke's area, the prefrontal area related to thinking and the orbital frontal area related to visual sense. During the pinch grip exercise, cortical activation was observed for the natural mouth in the primary sensory area, Wernicke's area, the primary and supplementary motor area, and the prefrontal area. For the closed mouth, cortical activation was observed in the temporal lobe, Wernicke's area, the prefrontal area related to thinking, the secondary visual area, the primary sensory area and the supplementary motor area. In the case of the open mouth, cortical activation was observed in a few parts in the temporal lobe as well as Wernicke's area, the prefrontal area related to thinking, and other areas related to visual sense such as the primary visual area, the secondary visual area and the visual association area. Conclusion : Brain was more activation for close mouth and open mouth more than natural mouth movement.