• Journal of the Korean Society of Physical Medicine
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• v.3 no.3
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• pp.161-167
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• 2008

Purpose : The purpose of this study was to evaluate the effect of kinesio taping and wrist supporter on grip strength. Methods : The subjects for this study were thirty three young healthy people. To find out the effectiveness of kinesio taping and wrist supporter, divide three treatment method. Subjects measure the normal grip strength and then put on the kinesio taping and wrist supporter on wrist. Results : The results were as follow : 1. There were statistical significance on the grip strength with taping group(p<0.05). 2. There were statistical significance on the grip strength with wrist supporter group(p<0.05). 3. Taping group was more statistical significance than wrist supporter group on the grip strength. Conclusion : Supporter and taping on wrist were effective in grip strength.

• Journal of International Academy of Physical Therapy Research
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• v.4 no.1
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• pp.532-538
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• 2013

The purpose of this study is to analyze the grip strength by the girth of upper arm and forearm and their muscle activities by duration of grip strength. The subjects were consisted of 20 healthy adults(10 males & 10 females) who had no medical history of neurological and surgical problems with their arms. Girth of upper arm/ forearm and maximum grip strength for 4sec and 30sec were measured. Muscle activity was by wireless electrode EMG system. Co-relation of girth of upper arm/ forearm was significantly high. Upper arm's muscle activity performed for 4sec and 30sec was significantly high. In this study. It suggests that training of upper arm should be performed with the training of grip strength because both of upper arm and forearm affected grip strength.

• The Journal of Korean Physical Therapy
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• v.15 no.3
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• pp.91-109
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• 2003

The grip strength is orthopedics department, the place where from rehabilitation medical science and industrial medical science and it evaluates the function of the hand certainly is the ability which is necessary. There is specially by an occupation rehabilitation of mentally retarded child and the evaluation of grip strength is one which is meaning. The samples for this study were 39 normal males and 59 normal females, 62 mentally retarded males, 33 mentally retarded females ranging in age from Prepubeal period to Adolescence. This study was used to measure grip strength BASELINE Hydraulic Hand Dynamometer manufactured by EEI(Fabrication Enterprises Incorporated)in USA. The objective of research from the Prepubeal period to Adolescence the normal and mentally retarded students comparison evaluates the grip strength and effective fine motor program of one's it makes with the fundamental data for a development and it does. The results are as follow : (1) The hand which the normal student and the schoolgirl of rises from grip strength measurement result of the Prepubeal period research object people 10.7Kg with the same left hand was each measured 10Kg with 9.8Kg with in. The grip strength of the mentally retarded schoolboys was the hand which rises 6Kg with the left hand 5.4Kg, the grip strength of the schoolgirls 6.5Kg with was identical. (2) The hand which the normal schoolboys and the schoolgirls rises from grip strength measurement result of the Adolescence research object people 29.6Kg, 20Kg the left hand to be was each measured 27.8Kg with 18.4Kg with. The hand which the mentally retarded schoolboys and the schoolgirls rises 13.1Kg, 11.3Kg the left hand to be was each measured 12.3Kg with 10.9Kg with. (3) Among the normal students $10.2\%$ (Prepubeal period $0.94\%$, Adolescence $15.2\%$) in Mentally Retarded students $17.9\%$ (Prepubeal period $0.77\%$, Adolescence $19.1\%$) left hand it was higher. (4) The grip strength of the students who attend school from the general family dwells were appeared higher than students residence at institution.

• Journal of the Korean Society of Physical Medicine
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• v.13 no.2
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• pp.109-114
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• 2018

PURPOSE: The purpose of this study conducted the experiment to check change of ability to grip depending on normal male adult's elbow flexion angle and the effect of kinesiology tape application. METHODS: Normal male adults who studies in H university where located in Kyoungbook state and did not have any factors like fracture, osteoarthritis, deformities and non-neurologic issue which might influence the result of this study were selected as subjects. Elbow of subjects were applied by 5cm wideness kinesiology tape and elbow's angle was selected by $0^{\circ}$, $45^{\circ}$, $90^{\circ}$, $135^{\circ}$ using Goniometer. The change of ability to grip depending on flexion was measured by an electronic dynamometer before and after taping. RESULTS: Before and after taping elbow joint, both ability to grip decrease in more flexion angle and $135^{\circ}$ of elbow flexion was lowest value, 299.84N. Using kinesiology tape, neutral position $0^{\circ}$ was the highest value, 352.26N. The lowest was 331.68N on $135^{\circ}$. According to verifying the change of ability to grip depending on elbow flexion and the change of ability to grip after taping with paired t-test, the result was p<.05, there was significant difference. CONCLUSION: Using electronic dynamometer and estimating the ability to grip after and before kinesiology tape, the ability to grip decrease in more elbow flexion. The ability to grip after using kinesiology tape was relatively higher than before taping.

• Journal of the Ergonomics Society of Korea
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• v.30 no.3
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• pp.381-387
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• 2011

Objective: The aim of this study was to investigate the maximal grip strength for the combinations of resting time and trial and to provide guideline of resting time for the maximum gripping task associated with the number of trials. Background: Despite many previous researches for the maximal grip strength, few studies have considered the effect of both trials and rest time on the maximum grip strength. Methods: A total of thirty subjects participated in the study. The average of maximum grip strength was measured using JAMAR hydraulic hand dynamometer. The testing position was same as the position recommended by the American Society of Hand Therapists. The between-subject experimental design has been conducted in this study. Trials(1~20 trials) and rest time(2, 3, and 4min) were considered as independent variables, and the maximum grip strength was considered as dependent variable, respectively, in this study. Results: According to the result of the number of trials, the maximal grip strength decreased gradually as the number of trials increased. The ANOVA result showed that the main effect was significant for both resting time(p<.0001) and trial(p<.0001), and the interaction was significant(p<0.0086). Conclusions: The maximal grip strength decreased gradually as the number of trials increased. Thus, basic guideline of resting time was suggested for the number of trials of maximal grip strength tests in this study.

• Journal of Korean society of Dental Hygiene
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• v.19 no.5
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• pp.743-752
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• 2019

Objectives: Grip strength is a measure for assessing overall muscle strength, muscle mass, and nutritional status, and is a useful tool for early examination of a person's general health. Thus, this study analyzed the association between oral health-related factors and grip strength, using the 6th Korea National Health and Nutrition Examination Survey (KNHANES) data. Methods: Data were analyzed using the IBM SPSS version 25.0 (IBM Co., Armonk, NY, USA) software with a complex sampling analysis of stratified and clustered variables, all with weighted values, applied for every analysis conducted. From the 6th KNHANES data, a total of 26,101 people were selected as the study population. A complex sample generalized linear model analysis was performed for participants' sociodemographic characteristics, health status, use of oral care products, and factors such as adult mastication and speaking habits. Results: Grip strength was found to be higher among men compared to women. Grip strength was the highest in the 20-39 year old group. Furthermore, grip strength was statistically significantly higher among married and employed individuals, and in the right hand (p<0.001). Grip strength was statistically significantly higher among people who perceived themselves to have good health and among those who did not have health-related problems in the past two weeks (p<0.001). It was also higher among those who used interdental brushes and electronic toothbrushes (p<0.001), but decreased with greater discomfort in mastication and speaking among adults (p<0.05). Conclusions: Grip strength was found to be associated with oral health-related factors and therefore, these could be helpful tools in evaluating both general and subjective health statuses. In general, oral care products are small in size with oral care involving the use of hands and certain precise motions and actions to remove foreign substances in the oral cavity. As shown in the findings, grip strength declines with increased age and as a result, the use of oral care products should be strongly recommended in order to promote better general health.

• Journal of the Korea Concrete Institute
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• v.18 no.3 s.93
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• pp.303-312
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• 2006

The main objective of this experimental study is to examine the feasibilities of each testing method with various kinds of grip systems for the analysis of tensile strength of GFRP(glass fiber reinforced polymer) reinforcing bars. Three types of grip systems were examined such as resin-sleeved pipe-type grip proposed by CSA(Canadian Standard Association), frictional resistance type metal grip by ASTM(American Standard for Testing and Materials) and wedge-inserted cone-type grip normally used in prestressing tendons. Also, mechanical properties of GFRP rebars with different surface deformations were investigated for each different type of testing grip used in this study. All testing procedures including specimens preparation, set-up of test equipments and measuring devices were made according to the CSA S806-02 recommendations. From the test results, it was found that the highest tensile strengths of GFRP rebars were observed when tested by resin-sleeved grip system regardless of their different surface deformations. But tensile strengths of GFRP rebars by ASTM grip system are only 10% less than those by CSA grip system. On the other hand, CSA grip is not only difficult to prepare but also not disposable. Therefore, ASTM grip system is recommended as a practical alternative to estimate the tensile strength of GFRP rebars.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.25 no.4
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• pp.46-53
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• 2002

Push-pull strength has been found to be associated with various work factors such as height, distance, repetition, duration, posture and individual factors. Therefore, this study was performed to investigate the effect of various work factors on push-pull strength and muscle recruitment pattern. Work factors were consisted of grip height(elbow, shoulder), grip distance(100%, 50%, and 25% of maximum grip distance) and shoulder angle(neutral($90^{\cire}$), and abduction($45^{\cire}$, $0^{\cire}$)) during sitting work. The results showed that the normalized strength and EMG value were higher at the elbow height than the shoulder height, and increased with grip distance and shoulder adduction. The results of ANOVA showed that there was significant difference on muscle recruitment patterns among the task conditions. Therefore, it is necessary to consider work factors as well as strength to prevent workers from work-related injuries.

• The Korean Journal of Community Living Science
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• v.25 no.1
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• pp.29-37
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• 2014

This study examines whether regular exercise moderates the relationship between hand grip strength and cognitive function in older adults. Older adults 65 and over from the third wave of the Korean Longitudinal Study of Ageing Data were analyzed. A moderated multiple regression analysis was conducted to assess the moderating effects of regular exercise on the relationship between hand grip strength and cognitive function. According to the results, regular exercise moderated the effects of hand grip strength on cognitive function, suggesting that regular exercise should be promoted for older adults to reduce unfavorable effects of a decrease in hand grip strength on cognitive function.

• Proceedings of the Korea Concrete Institute Conference
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• 2004.11a
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• pp.797-800
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• 2004

Some test results indicated that the current ASTM grip adapter of GFRP rebar was not successful in developing the design tensile strength of GFRP rebar with reasonable accuracy. It is because the current ASTM grip adapter of GFRP rebar does not take into account the various geometric characteristics of GFRP rebar such as surface treatment, shape of bar cross section, bar deformation as well as physical characteristics such as poisson effect, elastic modulus in the transverse direction and so on. The research reported in this paper is to provide how to proportion an adequate grip adapter to develop design tensile properties of GFRP rebar. The proposed grip adapter is derived from the equilibrium or compatibility equations. From the preliminary test results for rounded GFRP rebar, it was found that the grip adapter with specific size proportioned by proposed method shows the highest tensile strength among them.