• 한국운동역학회지
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• 제28권1호
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• pp.61-67
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• 2018

Objective: The human body is often modelled as a spring-mass system. Lower extremity stiffness has been considered to be one of key factor in the performance enhancement of running, jumping, and hopping involved sports activities. There are several different classification of lower extremity stiffness consisting of vertical stiffness, leg stiffness, joint stiffness, as well as muscle and tendon stiffness. The primary purpose of this paper was to review the literature and describe different stiffness models and discuss applications of stiffness models while engaging in sports activities. In addition, this paper provided a current update of the lower extremity literature as it investigates the relationships between lower extremity stiffness and both functional performance and injury. Summary: Because various methods for measuring lower extremity stiffness are existing, measurements should always be accompanied by a detailed description including type of stiffness, testing method and calculation method. Moreover, investigator should be cautious when comparing lower extremity stiffness from different methods. Some evidence highlights that optimal degree of lower extremity stiffness is required for successful athletic performance. However, the actual magnitude of stiffness required to optimize performance is relatively unexplored. Direct relationship between lower extremity stiffness and lower extremity injuries has not clearly been established yet. Overall, high stiffness is potentially associate risk factors of lower extremity injuries although some of the evidence is controversial. Prospective injures studies are necessary to confirm this relationship. Moreover, further biomechanical and physiological investigation is needed to identify the optimal regulation of the lower limb stiffness behavior and its impact on athletic performance and lower limb injuries.

• 정신신체의학
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• 제25권1호
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• pp.19-26
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• 2017

연구목적 본 연구는 그 동안 국내에서 진행된 폐쇄 기술 스포츠 종목의 인지불안과 경기 수행력의 관계를 종합적으로 분석하는데 목적을 두었다. 방법 본 연구에서 분석된 선정 연구는 1980년부터 2015년까지 국내에서 발표된 학술지 논문과 학위논문으로 설정하였다. 자료 수집을 위해 학술연구정보서비스(RISS), 한국학술정보(KISS), 국회도서관(NAL) 등을 이용하였으며, 검색을 위한 주요 사용 단어는 '골프', '양궁', '사격', '불안', '수행력' 그리고 '경기력' 이었다. 결과 최종 선정된 연구는 총 10편이었다. 폐쇄 스포츠 종목 선수들의 인지불안은 수행력의 부정적 영향을 미치는 것으로 나타났다(ESr=-.198). 성별에 따른 메타분석 결과, 남자선수(r=-.31)가 여자선수(r=-.05)에 비해 더 많은 인지불안을 가지고 있는 것으로 나타났다. 결론 본 연구는 폐쇄스포츠 종목 선수들의 인지불안과 수행력의 관계가 있다는 것을 시사하고 있다. 스포츠 선수의 심리적 측면과 관련된 향후 연구에서는 불안과 수행력의 관계에 대한 심층적인 결과를 제시해야 할 필요성이 있다.

• 대한물리치료과학회지
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• 제19권4호
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• pp.17-25
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• 2012

Purpose : The purpose of this study is to know sports injury aspects and relationship between exercise stress, tension, exercise habits and sports injuries. Methods : We surveyed 42 professional golf players who attended Korea Tour during the second half of the year 2010 and have sports injuries with self - assessment questionnaires. Results : According to the types, they had myalgia, tendonitis, ligament sprain in the order. According to the body parts, they had injuries in right thoracic, left cervical, left shoulder region in the order. As a result of the analysis of the sports injury frequency according to the exercise stress and tension, there were no significant differences between the high and low level group. But result of injury regions showed high tension level group showed more damages in right thoracic region (p<0.05). Exercise habits appear subjects had lots of training time, however, they used to skip the muscular strengthening exercise during the on season, but had no significant difference between sports injury frequencies and exercise habit. Conclusion : For the improvement of the athletic performance and prevention of the sports injury, warming-up, cooling-down and muscular strengthening exercise program developments are needed.

• 한국융합학회논문지
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• 제12권3호
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• pp.325-339
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• 2021

연구의 목적은 문헌고찰을 통해 스포츠 관련 인지기능과 이를 효과적으로 측정할 수 있는 검사도구를 제안하고, 스포츠 지능 연구의 기초를 마련하는 것이다. 문헌고찰은 체계적 문헌고찰과 메타분석 지침인 PRISMA 연구법에 근거하여 수행되었다. 게재년도 2008-2020년으로 검색기준 설정 후, 키워드를 통해 검색된 총 429편 중 본 연구의 문헌선택 기준을 충족한 45편이 최종 분석되었다. 고찰된 논문 결과를 요약하면, 선수들은 비선수보다 특정 인지기능이 우수하고, 스포츠 전문성이 높을수록 해당 인지기능이 더 높았으며, 종목에 따라 인지기능에 차이가 있는 것으로 나타났다. 45편에 대한 종합적 분석결과, 스포츠 수행과 관련된 주요 인지기능은 실행기능(억제능력, 인지유연성), 정보처리속도, 공간능력, 주의력으로 요약된다. 각 인지기능 측정을 위한 검사도구로 억제능력은 정지신호과제, 인지유연성은 설계유연성검사, 정보처리는 단순반응검사와 선택반응검사, 공간능력은 심적회전검사, 주의력은 주의연합검사가 적절하다.

• 식품보건융합연구
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• 제8권1호
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• pp.21-30
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• 2022

This study proposed a multiple regression equation for predicting VO2max of elderly men and women using functional performance variables required to conduct daily activities. The subjects of this study were 58 elderly men (72.4±5.9 yrs) and 117 elderly women (73.4±4.5 yrs) aged 65-90 who belong to the senior welfare center. The maximal graded exercise test using a cycle ergometer and functional performance representing muscle strength, endurance, static and dynamic flexibility, mobility, and agility were measured. For statistical processing, multiple regression analysis was performed, and the statistical significance level was α = .05. As a result, the VO2max estimation formula for the elderly was 0.419 (standing up and sitting down a chair) + 0.199 (leg endurance against wall) + 5.383, and R2=0.406. In addition, the VO2max estimation formula for elderly women is - 0.737 (standing up from a supine position) - 0.144 (waking around two cones in a figure 8) - 0.135 (%body fat) + 0.042 (one leg balance with eyes open) + 29.395, R2=0.367 was calculated. The conclusion is that if the maximal graded exercise test is not available, it is considered that VO2max of the elderly can be predicted properly by using the estimation formula calculated based on the functional performance variable.

• 산경연구논집
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• 제15권5호
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• pp.39-46
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• 2024

Purpose: This study seeks to address the following research questions: (1) What are the fundamental principles of sports psychology that can be applied to business leadership? (2) How can these principles enhance business leadership effectiveness? As a result, the study may evaluate the necessity and benefits of incorporating sports psychology principles into business leadership practices. Research design, data and methodology: The data collection process in this study involved a systematic Literature review approach, following the prior literature analysis guidelines by numerous past studies. This methodical approach to selecting articles can be useful in synthesizing existing literature and can be referred to as Literature review and selection. Results: The literature analysis has indicated that there is much support for assumptions underpinning business leadership modules, which can be enhanced by applying sports psychology. This topic discusses the traits of self-positivity and mental toughness, goal perspective and interpersonal relationships within a team, and visualization in a sporting organization that can be implemented in business management to support organizational performance. Conclusions: All in all, it can be concluded that organizations must consider adopting Sports Psychology principles into their Leadership Development Programs. Psychological skills development training that includes mental toughness, goal setting, team cohesion,

• Steel and Composite Structures
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• 제50권6호
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• pp.609-625
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• 2024

This paper presents an in-depth analysis of the nonlinear vibration of microbeams, with a particular emphasis on their application in sports monitoring systems. The research utilizes classical beam theory, modified couple stress theory, and von-Kármán nonlinear parameters to explore the behavior of microbeams. These microbeams are characterized by a non-uniform geometry, with materials that continuously change along the beam radius and a thickness that varies along the beam length. The main contribution lies in its exploration of the stability of smart sensors in sports structures, particularly those with non-uniform geometries. The research findings indicate that these non-uniform microbeams, when used in smart systems made of functionally graded temperature-dependent materials, can operate effectively in thermal environments. The smart system developed in this study demonstrates significant potential for use in sports applications, particularly in monitoring and gathering information. The insights gained from this research contribute to the understanding of the performance and optimization of microbeams in sports applications, particularly in the context of non-uniform geometries. This research, therefore, provides a foundation for the development of advanced, reliable, and efficient monitoring systems in sports applications.

• 수산해양교육연구
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• 제27권5호
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• pp.1413-1423
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• 2015

This research paper looks into the interrelationships between physical self-perception, performance confidence, physical self-efficacy, dance flow and dance performance satisfaction with dance major students as the central figure. It also looks into the needs of dance majors, and in order to understand the accomplishment in dance and performance satisfaction, studies were carried out on 313 dance major students. According to this research, firstly, in the difference from physical self-perception according to general characteristics, specialists that major in dance have perception about one's body when specialists have a longer dancing time and experience. In the relationship between dancing experience and self-efficacy it could be seen that self-efficacy is postirely comelated with dancing experience. Also, in dance performance satisfaction, the more experience or time one encounters dance the higher the satisfaction. Secondly, when looking at the effect physical self-perception has on performance, confidence and self-efficacy, among the lower factors of physical self-perception, sports competence, condition and fitness have notable amount of effect on performance confidence. Thirdly, when looking at the effect on physical self-perception and self-efficacy, sports competence and condition have a certain amount of influence on body competence. Also sports competence, condition and fitness have some influence on physical confidence. Fourth, when looking at the influence of performance confidence and self-efficacy on dance flow, performance confidence, body competence and physical attraction have some effect on behavioral devotion. Lastry looking at the influence dance flow has on dance performance satisfaction, only behavioral devotion has much influence on dance performance satisfaction.

• 한국안광학회지
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• 제15권1호
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• pp.87-97
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• 2010

목적: 본 연구는 스포츠비젼 트레이닝의 효과를 검증하고, 그 결과가 야구성적에 영향을 미치는지 확인하고자 하였다. 또한, 스포츠에 있어서 시력의 중요성을 인식시키고, 스포츠비 젼 트레이닝에 대한 자료를 제공하고자 하였다. 방법: D 고등학교 야구부 선수 21명을 대상으로 원근거리 시위량과 융합 여력, 폭주 근점, 정지 시력과 동체 시력, 정적 입체시와 동적 입체시, 대비감도, 시각-반응 시간을 평가한 후 8주 동안의 스포츠비젼 트레이닝을 실시하고 그 변화량을 측정하였다. 결과: 스포츠비젼 트레이닝 이후 시기능이 향상되었고, 타율 또한 증가한 것으로 나타났다. 결론: 스포츠비젼 트레이닝의 원리를 다양한 스포츠에 적용하고, 보다 체계적인 검사장비와 훈련방법이 정비된다면 선수들의 스포츠 수행능력 향상에 도움을 줄 수 있는 보조수단으로 사용될 수 있으리라 사료된다.

• Journal of Ginseng Research
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• 제32권3호
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• pp.210-219
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• 2008

본 연구는 8주간의 홍삼 투여가 중추피로 및 말초피로에 미치는 영향과 홍삼 투여와 지구성 트레이닝을 병행 했을 경우, 홍삼이 유 무산소성 운동수행능력에 미치는 영향을 관찰하였다. 그 결과 홍삼 섭취와 지구성 트레이닝을 병행하는 것이 홍삼 섭취와 지구성 트레이닝을 단독으로 적용하는 것 보다 유산소성 운동수행능력과 말초피로에 높은 효과를 기대할 수 있으며, 홍삼의 섭취가 중추피로에도 긍정적인 영향을 미칠 것으로 기대된다. 하지만, 무산소성 운동수행능력에는 큰 영향을 주지 못하는 것으로 생각된다. 이에, 본 연구를 통해 검증된 홍삼의 피로회복 및 운동수행능력 향상 효과는 추후 일반인뿐만 아니라 운동선수의 운동능력향상 보조물(Ergogenic aid)로써 도움을 줄 것으로 기대된다.