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( Buong-o Chun ),( Sang-Hyup Choi ),( Jong-Baek Lee ),( Eonho Kim ),( Kihyuk Lee ) 한국운동생리학회(구 한국운동과학회) 2021 운동과학 Vol.30 No.2
PURPOSE: Muscle strength, power, speed, postural stability, and anaerobic power are important physical fitness factors required to perform well in a taekwondo competition. This study aimed to investigate the effects of 8 weeks of core balance and plyometric training on physical fitness in young taekwondo athletes. METHODS: Nine young taekwondo athletes participated in this program. Body composition and relative fitness (muscle power, core strength, agility, postural stability, anaerobic power, and isokinetic muscle function) were measured before and after training. Data were analyzed using IBM SPSS Statistics version 23.0 (IBM Corp., Armonk, NY, USA). A paired t-test (pre vs. post) was used for the analysis. RESULTS: The core strength measured by the sit-up count changed significantly after training (p<.05). In case of postural stability, the right absolute reach distance in the Y-balance test improved significantly after training (p<.05). In case of anaerobic power, the mean power (p<.01) and the peak power (p<.01) increased significantly after training. CONCLUSIONS: We demonstrated that 8 weeks of core balance and plyometric training enhanced core strength, balance, and anaerobic power in young taekwondo athletes. Our results suggest that core balance and plyometric training are effective in improving muscle strength, core strength, balance, and anaerobic power.
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송홍선(Hong-Sun Song),김광준(Kwang-Jun Kim),전병오(Buong-O Chun),이기혁(Ki-Hyuk Lee) 한국발육발달학회 2018 한국발육발달학회지 Vol.26 No.4
The purpose of this study was to analyze the effects of skeletal age (SA) and chronological age (CA) on physique and physical fitness of growing baseball players. For this purpose, a total of 86 baseball players participated in this study from two elementary schools (5th and 6th grades) and two middle schools (7th and 8th graders). The measurement variables were SA, CA, physique (height, weight, chest girth, body mass index, and body composition), physical fitness (muscle strength, muscle endurance, cardiovascular endurance, power, anaerobic power, flexibility, balance, agility, reaction time, and coordination). The relationship between SA, CA, physique, and physical fitness according to grade level was analyzed by a stepwise regression analysis. The results of this study are as follows. In the case of physique, only the CA had a significant effect on body mass index and body fat percentage in the 5th grade group of elementary school. In the case of the middle school, only the CA had a significant effect on the muscle mass of the whole group. The predictive variables affecting the physical fitness of the elementary school group included CA 4 times but SA 2 times. For the middle school group, SA was included 8 times, CA 4 times. The results of this study showed that the CA was the predominant predictor for the physique of the baseball players during the growth period. In the case of physical fitness, although CA was predominantly predictive variable than that SA in the elementary school group, SA was predominantly predictor variable than that CA in the middle school group. According to the results of this study, elementary baseball players are more likely to have a better performance when CA is high, but middle school baseball players are more likely to have a better performance when SA is high.
Cho Soo Hyun,Kang Hae Jin,Park Yoo Kyoung,Moon So Young,Hong Chang Hyung,Na Hae Ri,Song Hong-Sun,Choi Muncheong,Jeong Sooin,Park Kyung Won,Kim Hyun Sook,Chun Buong-O,Jung Jiwoo,Jeong Jee Hyang,Choi Se 대한치매학회 2024 Dementia and Neurocognitive Disorders Vol.23 No.1
Background and Purpose: The SoUth Korea study to PrEvent cognitive impaiRment and protect BRAIN health through lifestyle intervention (SUPERBRAIN) proved the feasibility of multidomain intervention for elderly people. One-quarter of the Korean population over 65 years of age has mild cognitive impairment (MCI). Digital health interventions may be cost-effective and have fewer spatial constraints. We aim to examine the efficacy of a multidomain intervention through both face-to-face interactions and video communication platforms using a tablet personal computer (PC) application in MCI. Methods: Three hundred participants aged 60–85 years, with MCI and at least one modifiable dementia risk factor, will be recruited from 17 centers and randomly assigned in a 1:1 ratio to the multidomain intervention and the waiting-list control groups. Participants will receive the 24-week intervention through the tablet PC SUPERBRAIN application, which encompasses the following five elements: managing metabolic and vascular risk factors, cognitive training, physical exercise, nutritional guidance, and boosting motivation. Participants will attend the interventions at a facility every 1–2 weeks. They will also engage in one or two self-administered cognitive training sessions utilizing the tablet PC application at home each week. They will participate in twice or thrice weekly online exercise sessions at home via the ZOOM platform. The primary outcome will be the change in the total scale index score of the Repeatable Battery for the Assessment of Neuropsychological Status from baseline to study end. Conclusions: This study will inform the effectiveness of a comprehensive multidomain intervention utilizing digital technologies in MCI. Trial Registration: ClinicalTrials.gov Identifier: NCT05023057