• Journal of the Korean Society of Safety
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• v.12 no.4
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• pp.209-213
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• 1997

Manual lifting techniques are commonly defined in terms of the postures adopted at the start of the lift. Quantitative definition is problematic, however, because the absolute joint angles adopted to lift an object are influenced by task parameters, such as the initial height of the load. The main objective of this study is to investigate the grip strength of the both hands at the initial lifting points. The survey is conducted by measuring the compression force, anthropometric data and grip strength at the lifting postures for the subjects(n=50) who is assigned to their job as usual. The experiment is peformed at the four lifting postures which involving the combination of two horizontal factors(H1 : 35 cm, H2 : 55 cm) and two vertical factors(V1 : 20~80 cm, V2 : 47~102 cm). The analysis result of lifting posture indicated that each H1-V1, H2-V1 combinations are about 60$^{\circ}$ and each H1-V2, H2-V2 combinations are about $30^{\circ}$. There are significant differences on grip strength between $60^{\circ}$ and $30^{\circ}$ stooped posture. The results of this study can be provided a method defining lifting postures at the minimum grip strength. Also, it is eliminated a hazard of the injuries which are cumulative trauma disorders(CTDs) and back pain, increased a productivity and improved a welfare of workers.

• The Journal of Korean Physical Therapy
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• v.10 no.2
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• pp.77-86
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• 1998

The shoulder joint permit ate greatest mobility of any joint area carries out the importment function of stabilization for hand use. So handgrip activity is important to evaluate while assessing shoulder load in manual work. There was an association between static handgrip and shoulder muscle activity. The purpose of this study was to find out the changes of the hand grip strength according to shouter an81e. One hundred (50 female, 50 male) college adult volunteers with no known shoulder dysfunction participated subject in three positions with elbow extension: (1) shoulder $0^{\circ}$ flexion (2) shoulder $90^{\circ}C$ flexion (3)shoulder $180^{\circ}C$ flexion. The paired t-test was used to determine the different in grip strength between right and left hand at shouter position change. All, there was significiant for all three position by right and left shoulder (p<0.001). In mon, the ANOVA results revealed not a significiant F-ratio fer all three position by right and left hand. In woman, revealed significiant (p<0.05).

• 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.16 no.4
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• pp.226-234
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• 2004

The purpose of this study was to evaluate effects of neural mobilization on the grip strength. Subjects were consist of 28 people who had no disorder of upper extremity from 19 to 29 years of age(mean age: 21.86) during 7 day from March 22, 2004 to 30 day. All Subjects received Neural mobilization of upper extremity for 15 minutes during 7 days. Digital grip strength dynamometer was used to measure grip strength. All measurements of each patients were measured at pre-treatment and 7 days post-treatment. The results of this study were summarized as follows : 1. The grip strength wasn't significantly increased between pre-treatment and post-treatment at 1 days(p .05). 2. The grip strength was significantly increased between pre-treatment and post-treatment at 7 days(p .05). 3. The results of analyzed effects of neural mobilization on the grip strength between pre-treatment and post-treatment that wasn't significantly increased at 1days(p.05) but significantly increased at 7days(p .05).

• Journal of Korean Physical Therapy Science
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• v.21 no.1
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• pp.53-58
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• 2014

Background : The purpose of this study is to identify the level of positive influence on the pain and the gripping power in patients with tennis elbow by comparing the TENS treatment method and the kinesio taping therapy with good accessibility among the kinesio taping therapy and electrical therapy. Methods : Targeting the patients diagnosed with tennis elbow, the subjects were categorized in groups of four, each of electrical therapy group and kinesio tape therapy group where the degree of pain reduction through VAS before and after the treatment of each group and the measurement of the degree of gripping power increase using the gripping power measurement tool as well as the pain reduction changes and gripping power increase before and after the treatment between the two groups were compared. Result : As a result, the electrical therapy group and the kinesio tape group were able to obtain the results of pain reduction and gripping power increase through VAS before and after the treatment, but for all pain reduction and gripping power increase, it had no statistically significant changes(p>.05). In addition, in the changes of pain reduction and changes of gripping power increase before and after the treatment, there were no statistically significant differences between the electrical therapy group and the kinesio tape group(p>.05). Conclusion : Based on the results so far, it is thought that the kinesio taping therapy can positively influence the pain reduction of patients with tennis elbow and increase of gripping power.

• Proceedings of the KAIS Fall Conference
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• 2009.05a
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• pp.24-27
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• 2009

본 연구는 일개 농촌주민들을 대상으로 신체구성, 운동(과거 운동여부), 체력상태, 골밀도를 조사하고, 골밀도와의 관련된 요인을 파악하여 농촌 주민들의 골다공증 예방을 위한 기초자료를 제시하고자 143명을 대상으로 연구하였고, 결과는 다음과 같다. 1. 조사대상자들 연령이 증가할수록, 교육수준이 낮을수록 골밀도가 낮았다(p<0.05). 2. 만성질환이 있는 경우는 없는 경우보다 골밀도가 낮았다(p<0.05). 3. 체중 BMI 체지방량 제지방량이 많이 나가는 경우가 낮은 경우보다 골밀도가 유의하게 높았다(p<0.01). 4. 과거 운동을 했던 경우와 기초대사량이 높은 경우, 근육량이 많은 경우 골밀도가 높았다(p<0.01). 5. 악력 윗몸일으키기 팔굽혀펴기 등 체력이 좋은 경우 골밀도가 높았다(p<0.01). 6. 골밀도 수치를 종속변수로 한 다중 회귀분석결과 연령, 만성질환 유무, 과거 운동유무가 유의한 변수로 나타났다.

• Journal of muscle and joint health
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• v.15 no.2
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• pp.130-139
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• 2008

Purpose: The purpose of this study was to examine the effect of Tai Chi exercise on muscle strength, grip strength, flexibility, pain, depression and self-efficacy in patients with osteoarthritis. Method: With a quasi-experimental design, 46 persons with osteoarthritis were assigned into an experimental group (n=22) or a control group (n=24). Muscle strength, grip strength, flexibility, pain, depression and self-efficacy were measured both before and after the exercise. Data were analyzed with SPSS WIN using descriptive statistics, t-test, and ANCOVA. Results: The mean age of the subjects was 68 years in the experimental group and 64 years in the control group. After controlling for age and pre-test outcome variables, muscle strength scores (F=-14.8, p= .00), grip strength scores (Rt: F=8.40, p= .01), and self-efficacy (F=47.3, p= .00) improved more in the experimental group than the control group. Joint pain scores (F=15.0, p= .00) and depression scores (F=14.7, p= .00) decreased in the experimental group. Conclusion: Tai Chi exercise is likely to be an effective nursing intervention to improve muscle strength, grip strength, and self-efficacy and reduce pain and depression for patients with osteoarthritis.

• Journal of Korean Medicine Rehabilitation
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• v.21 no.4
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• pp.219-226
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• 2011

Objectives: The aim of this pilot study is to investigate qigong as a trailing method to treat diseases and improve the quality of life. Methods: We used a controlled clinical study in this research qigong group(n=34) practiced the zhan zhuang gong for 2 minutes. Control group(n=33) did low intensity walking for 2 minutes. Changes of grip strength, heat rate and rating of perceieved exertion were measured before and after treatment. Paired t-tests and independent t-tests were applied for statistical analysis. Results: Qigong group showed significant improvement in grip strength(p<0.05), whereas the control group showed insignificant changes(p<0.05). Both groups demonstrate significant changes in heart rate(p<0.05). In rating of perceieved exertion, significant difference showed between groups(p<0.05). Conclusions: The zhan zhuang gong, a kind of qigong improved grip strength by 2 minutes of practice. We may conclude that zhan zhuang gong could be a method of improving physical strength.

• Korean Journal of Applied Biomechanics
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• v.24 no.2
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• pp.161-166
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• 2014

Hand grip strength has been utilized as an indicator to evaluate the motor ability of hands, responsible for performing multiple body functions. It is however difficult to evaluate other factors (other than hand muscular strength) utilizing the hand grip strength only. The purpose of this study was analyzed the motor ability of hands using EMG and the hand grip strength, simultaneously in order to evaluate concentration, muscular strength reaction time, instantaneous muscular strength change, and agility in response to visual reaction. In results, the average time (and their standard deviations) of muscular strength reaction EMG signal and hand grip strength was found to be $209.6{\pm}56.2$ ms and $354.3{\pm}54.6$ ms, respectively. In addition, the onset time which represents acceleration time to reach 90% of maximum hand grip strength, was $382.9{\pm}129.9$ ms. Results in visual reaction (on) indicate the differences in muscular strength agility and concentration of participants in regards to visual reaction.

• Korean Journal of Applied Biomechanics
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• v.17 no.3
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• pp.125-131
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• 2007

The purpose of this study was to evaluate the difference in grip force and angular kinematic variables between elite (handicap${\leq}2$) and novice golfers. Three-dimensional motion analysis system with synchronized grip force measurement system was used. The participants consisted of two groups based on their playing ability: 10 elite golfers and 10 novice golfers. Each subject performed 5 putting strokes at the distance of 1, 3, and 5m with randomly selected order. During entire putting phase, elite group showed relatively constant grip force but novice group showed continuously increasing grip force pattern. There existed a clear difference in the trajectory of shoulder line between two groups. As for novice group the rotational center did not converge into one point, for elite group the rotational center converged into precise single point. And there was a clear difference pattern in anterior-posterior directional movement at shoulder between two groups. These difference might be helpful for improving consistent putting skills.