• Physical Therapy Korea
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• v.6 no.4
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• pp.8-14
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• 1999

이 연구의 목적은 우세한 손과 그렇지 않은 손에서 방사효과가 악력에 어떤 영향을 미치는가 알아보는데 있다. 연구대상은 의료기관에 있는 30명이며 연령은 $32{\pm}9.23$세, 체중분포 $73.8{\pm}23.7$ kg이며, 신장은 $170.26{\pm}10.24$ cm 이었다. 연구 대상자들의 악력은 4가지 다른 조건에서 측정되어졌다. 첫째 조건은, 방사효과가 잠재적으로 가능한 상태에서 우세한 손의 최대악력을 측정, 둘째 조건은, 방사효과가 잠재적으로 불가능한 상태에서 우세한 손의 최대악력을 측정, 셋째 조건은, 방사효과가 잠재적으로 가능한 상태에서 우세하지 않은 손의 최대악력을 측정, 넷째 조건은, 방사효과가 잠재적으로 불가능한 상태에서 우세하지 않은 손의 최대악력을 측정하였다. 연구결과로는 어떤 조건에서도 방사효과가 잠재가능과 불가능의 최대악력비교에서 이원분산분석(two-way ANOVA) 결과 통계학적으로 어떤 차이점도 없었다(F[1, 116] = .0016, p<.05). 이 연구결과는 정상인에 있어서 방사효과가 악력에 미치는 영향을 통계학적으로 발견할 수 없다는 결론을 내렸다. 그 이유로는 방사효과가 최대악력에 미치는 영향이 10~20%의 최대 근육 수축범위이며 척추상위 억제 기전(supraspinal inhibitory mechanism)이 방사효과의 활동을 억제한다는 이론에 의한다.

• Korean Journal of Applied Biomechanics
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• v.19 no.3
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• pp.611-617
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• 2009

The primary purpose of this study was to analysis quantitatively the degree of injury and/or the progress of treatment for physical impairment. This study provided a more detailed study that evaluates all test parameters including maximum grip strength, duration of operation, average grip strength, acceleration work, dynamic endurance time and percent change in static endurance. Also, a complete database management system is developed and used to store related training, evaluation, and personal information. In addition, the system is developed a grip sensor using load.cell transducer (${\leq}60kg$). The system will be efficient to operate and convenient to use, furthermore, it can be helped for understanding and analysis the progress of a patient during a doctor's rehabilitation program.

• Journal of Korean Physical Therapy Science
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• v.8 no.2
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• pp.1047-1050
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• 2001

이 연구의 목적은 전완 원주와 악력과의 상관관계를 알아보는 것이다. 오른손잡이 여성 30명이 이 연구에 참여하였으며, 연구의 대상자의 평균 연령은 31.0세였다. 전완 원주는 척골의 주두와 경상돌기의 1/2 지점과 근위 3/4 지점에서 줄자를 이용하여 측정하였다. 악력은 미국 수부 치료사 협회의 기준에 의하여 Jarmar dynamometer를 사용하여 측정하였다. 통계학적 분석은 피어슨 상관 관계 계수를 이용하여 상관관계를 조사하였다. 전완 두 지점에서 측정된 원주와 악력간에는 낮은 상관관계를 나타내었다(r=.02. p=.921; r=.02, p=.928). 연구 대상자 30명 중 정기적으로 상체 운동을 하는 18명의 연구 대상자들의 전완 두 지점에서도 낮은 상관 관계를 나타내었다(r=.16, p=.521: r=.18, p=.468). 본 연구의 결과는 선행된 다른 연구 결과와는 상이하게 높은 상관관계를 나타내지 않았다. 그 이유로는 본 연구에서 악력에 영향을 주는 여러 가지 요소들(신체 유형, 운동 습관. 직업 피하 지방성분, 유전적 요소 등)의 측정이 고려되지 않았고. 연구 대상자의 수(n=30)가 적었다는 점을 들 수 있다.

• Proceedings of the Korea Contents Association Conference
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• 2012.05a
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• pp.409-410
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• 2012

낮은 악력과 높은 악력으로 2등분 했을 때, 손가락 비율(2D:4D)에 대해 낮은 악력을 가진 남자가 높은 악력을 가진 남자보다 더 높은 2D:4D 비율을 가지고 있다. 이와 같은 이론을 토대로, 국내 대학생 중 축구선수를 대상으로 손가락 비율(2D:4D)과 체력과의 상관관계를 분석해보고자 한다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.3
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• pp.2073-2078
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• 2015

This study is investigated for angle of elbow joint influence on grasp strength, confirm change of grasp strength and brachioradialis thickness according to angle of elbow joint in standing. Thirty male and female university students, who participated with agreement in this study, using for electronic dynamometer and convertible ultrasound measure maximum grasp strength and brachioradialis thickness after elbow joint $0^{\circ}$, $90^{\circ}$, $135^{\circ}$ positioning in standing. In average grasp strength was strongest at elbow joint $0^{\circ}$, as the angle of elbow joint increased, was decreased grasp strength, no significant statistically(p<.05). In average brachioradialis thickness was lowest at elbow joint $0^{\circ}$, as the angle of elbow joint increased, was increased brachioradialis thickness, significant statistically(p<.05). These result may indicated that change of elbow joint angle not influence on grasp strength, but influence on brachioradialis thickness.

• Proceedings of the ESK Conference
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• 1997.10a
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• pp.23-30
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• 1997

근골격계 질환은 부적절한 작업 자세, 중량물의 무리한 취급, 과도한 작업 부하 등과 같은 작업 환경 에서 기인한다. 현장의 대부분의 공구사용작업에 있어서, 쪼그려앉아서 작업하는 경우가 매우 빈번하게 발생한다. 본 연구에서는 쪼그려 앉은자세에서 사용하는 공구를 설계하는데 필요 요소인 악력의 최대치 를 조사하는 것을 목적으로 한다. 23세-29세의 남자 8명을 피실험자로 실험하였다. 실험모델로는 쪼그려 앉기에서 1) 0 .deg. 외전된 어깨와 정위치의 손목에서 어깨 굴곡이 180 .deg. , 135 .deg., 90 .deg. 와 45 .deg. 의 조합된 자세에서의 악력, 2) 0 .deg. 외전된 어깨와 정위치의 손목에서 팔꿈치 굴곡이 135 .deg. , 90 .deg. 와 45 .deg. 조합된 자세에서의 악력을 조사하였다. 조사결과 쪼그려 앉은 자세에서 어깨굴곡이 45 .deg. 인 자세에서 최대의 악력이 발휘되는 것으로 나타났으며, 인체부위 중에서 손너비, 손목둘레, 팔길이, 손두께, 팔꿈치-손목까지의 길이 등이 쪼그려 앉은자세와 깊은 상관관계가 있는 것으로 나타났다.

• 한국노년학
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• v.40 no.1
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• pp.91-109
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• 2020

This study aims to investigate the interdependence of Korean middle and old-aged couples in the association between exercise and life satisfaction through grip strength trajectory. Data were drawn from the nationally representative Korea Longitudinal Study of Aging (KLoSA) collected from 2006 to 2016. The sample included couples over 45 years of age in the first wave and participated in all six waves of the survey (Ncouple=1,997). There were three steps for analyses: correlation, parallel latent growth curve model, tests of indirect effects of the mediation paths. Covariates included in the models were husbands and wives' characteristics (age, education, work status, chronic diseases, marital satisfaction, contact frequency with friends or neighbors) and couple's household income. Results showed husbands' and wives' life satisfaction and grip strength were interdependent upon each other. Also, exercise participation of both husbands and wives was associated with both husbands' and wives' life satisfaction via the initial level of grip strength of husbands. Moreover, exercise participation of only husbands was associated with wives' life satisfaction through the initial grip strength of husbands. These results suggest the aging processes of middle and old-aged couples need to be understood in the context of gender dynamics and couple interdependence.

• Journal of Convergence for Information Technology
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• v.12 no.3
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• pp.46-54
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• 2022

This is a study using data from the 8th National Health and Nutrition Examination Survey to identify the factors that affect the handgrip strength and health status in the elderly. Bivariate logistic regression analysis was performed on 1,470 subjects. As a result of this study, the decrease in grip strength was significantly lower for males, 70-74 or 65-69 years of age, and those who thought their subjective health status was normal or good. The decrease in grip strength was significantly higher when the education level was less than elementary school or middle school, and when the sleeping time was more than 8 hours. Considering the variables affecting hand grip strength, it can be used as basic data when establishing health policies for the elderly or health promotion policies to improve grip strength as a primary prevention activity.

• 한국노년학
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• v.39 no.3
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• pp.549-567
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• 2019

The present study examined whether the relation between relative handgrip strength and cognitive function varied by paid employment status and participation of social activities among Korean older adults. A total of 3,376 Korean adults aged 65 or older were drawn from the 2016 Korean Longitudinal Study of Ageing (KLoSA). Weighted hierarchical regression analyses were conducted to examine moderating effects of paid employment status and social activities on the relation between relative handgrip strength and cognitive function. After adjusting for covariates, results show that relative handgrip strength has a positive association with cognitive function. Both paid employment status and social activities have positive associations with cognitive function and moderate the relationship between relative handgrip strength and cognitive function. These significant moderating effects show that participating in paid employment and social activities buffer against the effect of lower handgrip strength on cognitive function. Findings from the present study highlight the significant role of active aging in older adults'cognitive function. Implications are discussed in a cultural context.

• 한국노년학
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• v.38 no.3
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• pp.551-567
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• 2018

Demographic and socio-structural information is useful to identify potential welfare recipients who are in need of disease-prevention and intervention services. Thus, the present study aims to explore the differences in grip strength among middle and old-aged adults by living conditions and by living area. The 5th wave data of Korean Longitudinal Study of Aging was utilized. The dependent variable was grip strength, and the independent variables were living alone (living alone or not) and living area (city or non-city). Covariates were age, education, log-transformed household income, spouse existence, body mass index, self-rated health conditions, depressive symptoms, cognitive function, smoking, regular exercise, frequency of meeting with friends, and the number of social participation. Regression analysis was performed for middle-aged men, middle-aged women, old-aged men, and old-aged women, respectively. ANOVA and Chi-test were additionally used to specifically discuss significant results. Cross-sectional weight was applied to all analyses. According to the results, living alone and living area did not have significant effects on grip strength among middle-aged men, old-aged men, and old-aged women. In middle-aged women, however, living alone and living area were significantly associated with grip strength. To be specific, middle-aged women who lived alone in rural areas had the lowest grip strength compared to other middle-aged women. Additional analysis showed that middle-aged women who lived alone in rural areas had risk factors, such as low education level, low income, or high depressive symptoms. It implies that middle-aged women living alone in rural areas may have physical health risks, so they might be in need of disease prevention. This study is meaningful in that it can provide reliable information on the latent welfare recipients by using representative panel data and applying weight values.