• Genomics & Informatics
• /
• 제17권1호
• /
• pp.11.1-11.7
• /
• 2019

Athletic performance is a complex multifactorial trait involving genetic and environmental factors. The heritability of an athlete status was reported to be about 70% in a twin study, and at least 155 genetic markers are known to be related with athlete status. Mitochondrial DNA (mtDNA) encodes essential proteins for oxidative phosphorylation, which is related to aerobic capacity. Thus, mtDNA is a candidate marker for determining physical performance. Recent studies have suggested that polymorphisms of mtDNA are associated with athlete status and/or physical performance in various populations. Therefore, we analyzed mtDNA haplogroups to assess their association with the physical performance of Korean population. The 20 mtDNA haplogroups were determined using the SNaPshot assay. Our result showed a significant association of the haplogroup F with athlete status (odds ratio, 3.04; 95% confidence interval, 1.094 to 8.464; p = 0.012). Athletes with haplogroup F ($60.64{\pm}3.04$) also demonstrated a higher Sargent jump than athletes with other haplogroups ($54.28{\pm}1.23$) (p = 0.041). Thus, our data imply that haplogroup F may play a crucial role in the physical performance of Korean athletes. Functional studies with larger sample sizes are necessary to further substantiate these findings.

• 대한통합의학회지
• /
• 제12권2호
• /
• pp.11-23
• /
• 2024

Purpose : The purpose of this study was to investigate the effect of exercise using a suspension device (sling and total body resistance exercise; TRX) on physical functional performance and postural balance. Methods : An experimental study comparing 2 different suspension exercise was conducted on 16 healthy college students. 16 subjects were assigned to two groups. They were classified into 8 sling group and 8 TRX group. Miniplus was used to evaluate physical functional performance. In this study, isokinetic resistance mode was used to compare and analyze seven movement patterns. Biorescue was used to evaluate postural balance. The intervention exercises in this study are as follows. Standing lean forward (SLF) using a sling and TRX was performed 3 times a week for 3 weeks. The SLF was held for 10 seconds and then rested for 15 seconds, repeated a total of 10 times for 3 sets. Results : In the TRX group, significant increases were observed in physical functional performance (p<.05). Among the differences between groups, significant differences were confirmed on the front of the right arm, the back of the left arm, and the back of the right arm. In the sling group, significant increases were observed in left, right, front, and overall dynamic balance (p<.05). A significant increase in posterior dynamic balance was confirmed in the TRX group (p<.05). There was no significant difference between groups. Conclusion : Based on the results of this study, TRX was effective in improving physical functional performance, while the sling was effective in enhancing postural balance. However, confirming the effectiveness of slings and TRX in the relationship between physical functional performance and postural balance proved inadequate. Therefore, additional research should be conducted to verify the effects of suspension.

• 한국전문물리치료학회지
• /
• 제18권4호
• /
• pp.1-10
• /
• 2011

This study compared the stability of the cervical spine according to the presence of neck pain and deep neck flexor performance. Thirty subjects with neck pain, and thirty subjects without neck pain were recruited for this study. The Cranio-cervical flexion (CCF) test was applied using a pressure biofeedback unit to classify the subjects into four subgroups; no cervical pain and good deep neck flexor performance (NG group), no cervical pain and poor deep neck flexor performance (NP group), cervical pain and good deep neck flexor performance (PG group), and cervical pain and poor deep neck flexor performance (PP group). The head sway angle was measured using a three-dimensional motion analysis system. A 3-kg weight was used for external perturbation with the subject sitting in a chair in the resting and erect head positions with voluntary contraction of the deep neck flexors. A one-way analysis of variance (ANOVA) was performed with a Bonferroni post hoc test. The deep neck flexor performance differed significantly among the four groups (p<.05). The NG group had significantly greater deep neck flexor performance than NP and PP groups. The stability of the cervical spine also differed significantly among the four groups in the resting head position (p<.05). The head sway angle was significantly smaller in NG group as compared with the other groups. The PP group had the greatest head sway angle in the resting head position. However, there was no significant difference in the stability of the cervical spine among the groups in the erect head position with voluntary contraction of deep neck flexors (p=.57). The results of this study suggest that the deep neck flexor performance is important for maintaining the stability of cervical spine from external perturbation.

• 한국컴퓨터정보학회논문지
• /
• 제24권12호
• /
• pp.151-155
• /
• 2019

본 연구는 물리 치료사의 심폐 소생술(CPR)의 지식 및 가슴압박 수행 능력을 조사하는 것이다. 심폐 소생술 교육받은 그룹과 교육받지 않은 물리치료사 그룹 간의 심폐소생술 지식과 가슴압박 수행 능력을 비교하였다. 이 연구에서 물리치료사들의 심폐소생술에 대한 정확한 이론적인 지식과 가슴압박 수행력간의 불일치가 있음을 확인 할 수 있었다. 물리치료사들의 응급상황에 대한 조기대응 능력 향상을 위해 심폐소생술 지식수준 향상과 가슴압박 수행능력 향상을 위한 체계적이고 반복적인 교육 및 훈련이 정기적으로 이루어져야 한다.

• The Journal of Korean Physical Therapy
• /
• 제27권4호
• /
• pp.201-206
• /
• 2015

Purpose: This study was conducted in order to understand the influence of professionalism on job satisfaction and job performance of the physical therapist. Methods: Subjects were 148 physical therapists. We conducted a questionnaire survey on professionalism, job satisfaction, and job performance. Professionalism questions were 'Compliance of professional organization', 'Beliefs about public service', 'Autonomy', 'Beliefs about self-regulation', and 'Vocation awareness of the profession'. A regression analysis was then performed. Results: The subjects' average score for professionalism was $3.18{\pm}0.31$ points. The lowest score for satisfaction was observed for 'Compliance of professional organization'. Professionalism had an effect on job satisfaction. 'Vocation awareness of the profession (${\beta}=0.44$, p<0.001)', 'Beliefs about public service (${\beta}=0.25$, p<0.01)', and 'Autonomy (${\beta}=0.17$, p<0.05)' had an effect on job satisfaction. R square=0.46 (adjusted R square=0.45). Professionalism had an effect on job performance. 'Autonomy (${\beta}=0.29$), p<0.001)', 'Vocation awareness of the profession (${\beta}=0.22$, p<0.05)', and 'Beliefs about self-regulation (${\beta}=0.18$, p<0.05)' had an effect on job performance. R square=0.25 (adjusted R square=0.22). Conclusion: The results of this study indicate that in order to improve job satisfaction and job performance, it is necessary to improve professionalism. Therefore physical therapists should improve their professionalism ('Compliance of professional organization', 'Beliefs about public service', 'Autonomy', 'Beliefs about self-regulation', and 'Vocation awareness of the profession') in order to improve their job satisfaction and job performance. In addition, research to improve professionalism of the physical therapist should be continued.

• 융합보안논문지
• /
• 제22권5호
• /
• pp.81-87
• /
• 2022

본 연구의 목적은 국가핵심기술을 보유하고 있는 기업들의 물리보안수준이 보안성과와 업무효율성에 미치는 영향을 분석하는데 있다. 이를 위해 보안요원 200여명을 대상으로 한 달 동안 설문조사를 실행하였다. 설문조사에서 독립변수는 물리보안수준, 매개변수는 보안성과, 종속변수는 업무효율성으로 선정하였다. 신뢰도 분석과 타당성분석, 판별타당성분석 등을 SPSS를 통해 인과관계를 분석한 결과 "물리보안수준 ⇒ 보안성과, 보안성과 ⇒ 업무효율성"는 채택되었으나 "물리보안수준 ⇒ 업무효율성"은 기각되었다. 따라서 물리보안수준이 매개변수인 보안성과를 거쳐 업무효율성에 영향을 주는 것으로 조사되었으나 물리보안수준이 직접 업무효율성에 영향을 미치지 않는 것으로 나타났다. 향후 업무효율성을 향상시키기 위해서는 보안성과를 높이는 것이 우선되어야 할 것이다.

• 대한정형도수물리치료학회지
• /
• 제22권1호
• /
• pp.35-41
• /
• 2016

Background: The purpose of this study was to investigate the effect of modified reverse-six taping on the balance and gait performance in Pes Planus. Methods: A total of twelve subjects (4 males, 8 females) in Pes Planus participated in this study. Navicular drop test was used to evaluate Pes Planus. Balance performance(anterior-posterior; A-P, medial-lateral; M-L), overall) was evaluated using the Biodex balance system in two difference condition(no-taping, with reverse-six taping). Gait performance (cadence, velocity) was evaluated using GAITRite System in two difference condition (no-taping, with reverse-six taping). Results: There were significant improvements of A-P and overall in the balance performance after using reverse-six taping (p<.05). there was no significant improvements of M-L balance performance. and, there were no statistical difference of cadence and velocity in the gait performance after using reverse-six taping. Conclusions: This study found that modified reverse-six taping in Pes Planus was improve the balance performance. but dose not affect the gait performance.

• 산업경영시스템학회지
• /
• 제20권42호
• /
• pp.151-159
• /
• 1997

This Study intends to analyse the degree which Psychological Anxiety affects to Physical Performance using Multivariate Statistical Analysis. For this, we accumulated two type's datum : (1)Data about Psychological anxiety by Spielberger's STAI- Ⅰ·Ⅱ, (2)Data about Physical Performance by AEFH's FITKIT.

• 한국게임학회 논문지
• /
• 제21권3호
• /
• pp.147-156
• /
• 2021

In this paper, we planned to see the positive effects of the immersive virtual environment. In particular, the positive effect of presence on physical performance was explored. A total of 25 participants were recruited for this experiment and his/her physical performance was measured by Electromyography (EMG) while they were exercising (rowing), and presence was measured by a self-reported measure. The participants were randomly assigned to experience either a) Virtual Reality (VR) or b) non-VR (2D screen) condition when they played the exergame. The result showed that 1) there was a positive relationship between representation mode and presence and 2) the higher level of presence reinforced the user's physical performance. The limitation of the study and future study were also discussed.

• Physical Therapy Rehabilitation Science
• /
• 제10권4호
• /
• pp.493-502
• /
• 2021

Objective: Older adults with mild cognitive impairment (MCI) are more likely to progress to dementia. Motor-cognitive training is applied as a dual-task to improve the cognitive and physical functions of older adults with MCI. The purpose of the study was to know the recent trends in motor training types and outcome measures used for motor-cognitive training in older adults with MCI. Design: Aliterature review Methods: This literature review was conducted in Pubmed, MEDLINE® and Google Scholar with the following key words: older adults, mild cognitive impairment, motor-cognitive training, cognition, and dual-task. The 7 studies were found with the search tool and all studies were randomized controlled trials. Results: In motor-cognitive training in older adults with MCI, 6 studies applied aerobic exercise. And 3 out of 6 studies also applied strengthening exercises. One study applied dual tasks without aerobic exercise. In the 6 studies, overall cognitive and executive function were used as outcome measures, and physical function was evaluated as gait performance. Memory and physical frailty were also used as measurement tools. As a result of all studies, when motor-cognitive training was applied, cognition and physical performance showed significant results. Conclusions: A recent five-year study applied mainly aerobic exercise and strength training to older adults with MCI and found it to improve cognitive and physical performance.