Whether a nocturnal exercise with concomitant increase of body temperature (Tb) would intensify circadian phase delay compare to exercise with a suppressed Tb increase was examined. Seven healthy men (20.57 ± 2.88 yrs, 174.43 ± 4.05 cm, 70.13 ± 6.07 kg, 10.74 ± 1.92% fat) participated in two tests. Each lasted 5-days. On the day of 1 of each test, subjects maintained habitual sleep time (23:00-07:00, 0.2 lux) in laboratory. From day 2 thru 5, they biked for 60 min at 55% of maximal capacity beginning at 01:30 (15 lux). Then they went to bed at 04:00 and woke at 12:00. During test, they exercised either at 26℃ with elevating Tb (ET) or at 17℃ with cooling devices for suppressing Tb (ST). Two tests were counter balanced and separated by 2 weeks. During exercise, rectal (Tre) and skin (Tsk) temperatures, and heart rate were continuously recorded. Body weight changes during exercise were measured. Urine volume and saliva sample were collected. Blood samples were taken at 23:00, 03:30, 07:00, and 12:00 on day 1 and 5 of tests and analyzed for melatonin. The average weight loss for 4 days of exercise in ET and ST was 0.62 ± 0.09 and 0.22 ± 0.07 kg, respectively (p<.001). Tre increased during exercise but not different between conditions. Tsk maintained at 32℃ in ET and 24℃ in ST (p<.001). Tb were higher in ET than ST during exercise (p<.05). The average total urine volume passed was 0.07 ± 0.07 in ET and 0.11 ± 0.07 liter in ST (p<.05). The melatonin concentration at day 1 was 23 ± 26, 107 ± 45, 98 ± 46, and 14 ± 5 in ET and 18 ± 10, 108 ± 65, 103 ± 75, and 14 ± 12 pg/ml in ST for each time period. At day 5, it was 9 ± 3, 64 ± 41, 122 ± 73, and 54.1 ± 17.8 in ET and 8 ± 1, 68 ± 21, 111 ± 52, and 32 ± 14 pg/ml in ST. Differences of melatonin between ET and ST at day 5 of 12:00 as well as between day 1 and 5 at 12:00 of both conditions were noticed (p<.05). Salivary cortisol and immunoglobulin-A were not different. A nocturnal exercise induced a circadian phase delay in both conditions. However, body temperature increase during exercise intensified the shift indicating the importance of thermal load during exercise for circadian shift.
The purpose of this study was to find which percentage of 1RM for squat to improve the result of squat jump most effectively after plyometric training with different percentage of 1RM for squat. 24 men in their twenties were measured 1RM for squat and separated in 4 groups by 6 participants. Group A, B, C, and D used 0, 15, 30, and 45% of 1RM, respectively in the plyometric training. All groups had 1 hour training 3 days per week for 8 weeks(24 sessions). This study designed to increase the number of sets of exercises gradually. In week 1 and 2, participants trained 1 set of plyometrics with no load. The number of sets increased 2 to 4 in the week 3-4 to 7-8. The jump height(cm) and vertical impulse(%BW) of squat jump before and after plyometric training were measured by 3D motion capture system and force plate. All 4 groups showed the improvement of squat jump height and vertical impulse, but specially group B was most improved(p<0.5).
This study was designed to investigate the effects of increment of physical activity for 12 weeks through aerobic exercise training or change from own vehicle to public transportation for commuting on physical fitness, insulin resistance, inflammatory markers, and liver function in middle-aged men. Forty-four subjects, aged 30-50 yrs, were randomly assigned to either one of three groups, i.e., aerobic exercise training group (TR: n=14), change to public transportation group (PT: n=15), or control group (CON: n=15). Subjects in TR performed aerobic exercise for 30 min per sessions, three sessions per week, subjects in PT changed from their own vehicle to public transportation for commuting, and subjects in CON maintained their life patterns during the same intervention period. Physical fitness, insulin resistance, inflammatory markers, and liver function were measured at pre- and post-test, and the data were analyzed by repeated two-way ANOVA. Main results of the present study were as follows: 1) All variables related to physical fitness improved significantly in TR. Right grip strength, standing long jump, side step test, and sit-and-reach improved significantly in PT. 2) Although there were no significant changes in all variables related to insulin resistance, the variables tended to be improved in TR and PT. 3) TNF-α decreased significantly in TR and PT. IL-6 and CRP tended to be improved in TR and PT; however, the changes did not reach statistical significant level. 4) ALT decreased significantly in PT. AST and γ-GT tended to be improved in TR and PT; however, the changes did not reach statistical significant level. It was concluded that the 12 weeks of change to public transportation as well as aerobic exercise training would be beneficial for physical fitness and inflammatory markers. These interventions also would be possible to improve insulin resistance and liver function. The increment of physical activity through change from own vehicle to public transportation was found to be equally beneficial for health promotion compared to aerobic exercise.
The purpose of this study was to explore the effects of 6-week treadmill exercise on inflammation and neuronal cell death in the hippocampus of intracerebroventricular (ICV) streptozotocin (STZ)-injected Alzheimer's disease (AD) rats. The experimental animals were divided into Sham-CON group (n=10), ICV-STZ CON group (n=10) and ICV-STZ TE group (n=10). The treadmill exercise was conducted for 30 minutes a day, 5 days a week, for 6 weeks. First, in a water maze test, it turned out that the time and distance of finding an escape platform significantly increased in the ICV-STZ CON group as compared to those in the Sham-CON group. In contrast, it turned out that the time and distance of finding the escape platform significantly decreased in the ICV-STZ TE group in which the treadmill exercise was carried out as compared to those in the ICV-STZ CON group. The expression of marker of astrocytes, Glial Fibrillary Acidic Protein (GFAP) increased in the ICV-STZ CON group as compared to that in the Sham-COM group, but that in the ICV-STZ TE group decreased as compared to that in the ICV-STZ CON group. Regarding inflammatory reactions, it turned out that the expressions of TNF-α, IL-1β, Lipocalin-2 and COX-2 increased in the ICV-STZ CON group as compared to those of the Sham-CON group, but it turned out that those of the ICV-STZ TE group decreased as compared to those of the ICV-STZ CON group. Regarding neuronal cell deaths, the expressions of caspase-3 and Bax increased in the ICV-STZ CON group as compared to the Sham-CON group, but it turned out that the expression of Bcl-2 decreased, and the neuronal cell deaths increased. However, it turned out that the neuronal cell deaths decreased in the ICV-STZ TE group in which the treadmill exercise was carried out as compared to that in the ICV-STZ CON group. Therefore, it turned out that the treadmill exercise showed positive effects on improving cognitive ability by reducing inflammatory reactions and inhibiting neuronal cell deaths in the rats with AD. In other words, aerobic exercise like treadmill exercise can be applied as an effective alternative to improve symptoms of AD.
In this paper, effects on the match outcome of the various scoring methods frequently used in doubles tennis matches were analyzed using a simple probabilistic theory. It was assumed that the outcome of a single point depends on the server’s point-winning probability, which was assumed to be an independent event with an identical distribution for each point. It was found that the game-winning probability of the server’s team is greater than 0.5 - at times significantly higher - for server’s point-winning probability larger than 0.5, with the traditional game scoring method yielding the highest probability, followed by ‘one-deuce no-ad’ and then ‘no-ad rules’. For doubles matches between two ‘even-strength’ players on each team, which is essentially the same as singles matches, the order of the set-winning probability for the team with the first service game, as arranged in the order of the highest to the lowest, was: the traditional format (win-by-two-games), deuce games/tiebreak at six-games-all format, no-ad games/tiebreak at six-games-all format, one-deuce-no-ad games/tiebreak at five-games-all format, and finally no-ad games/tiebreak at five-games-all format, for the cases of point-winning probability larger than 0.5. In doubles matches involving teams with uneven average strengths or uneven partner skills, it was determined that the set-winning probability depends critically not only on the composition of the partners and service-game order but also on the scoring methods as well.
Common Method Biases(CMB) is not the matter of measuring tools but the various errors caused by measurement. One of the procedural remedies to overcome these errors is the separation of measurement. However, according to the analysis of the papers published in sports psychology academic journals during the last ten years, the papers used the separation of measurement were just 24 papers of total 197 papers and most measurement were the questionnaires of Likert scale. So this research introduces the Situational Judgment Test(SJT) which can measure the psychological variables using different method except for the questionnaires of Likert scale and describes the developing process and the existing research results. In addition to this, on the basis of the Situational Judgment Test(SJT) developed in the area of sports, it suggests that the scoring key methods which is applied both the distance score and order score show better the validity compare with methods using only the distance score.
The purpose of this study was to examine the effects of congruence type between sporting event and corporate sponsor as well as the effects of advertisement exposure frequencies (1, 3 or 5 times) on advertisement attitude and advertisement effectiveness, including brand attitude and advertisement wear-in and wear-out effects. Data (N=150) were collected using a convenience sampling method and 3-group random assignment. The collected data were analyzed by means of frequency analysis, reliability analysis based on factor rho coefficient, correlation analysis, one-way ANOVA, confirmatory factor analysis, and latent mean analysis. The results were as follows; firstly, in case of higher functional congruence condition, advertisement attitude was most positive in a 3-time exposure situation and it decreased as advertisement exposure frequency further increased. However, in the lower functional congruence situation, advertisement attitude was continuously decreased as advertisement exposure frequencies increased. Secondly, in the higher image similarity situation, advertisement attitude was increased as advertisement exposure frequencies increased. On the other hand, in the lower image congruence situation, advertisement attitude was decreased as advertisement exposure frequencies increased. Lastly, advertisement attitude, brand attitude, and wear-in effects were statistically higher in the high functional and image congruence situations than did in the low functional and image congruence situations.
This study classified and analyzed groups of spectators of professional baseball through market segmentation and predicted the sports consumer behavior by using artificial neural networks model and logistic regression model. The results of hierarchical cluster analysis, K-means cluster analysis, cross-tabulation analysis and one-way ANOVA using PASW 18.0 and AMOS 18.0 suggest five clusters of consumer segments and by using Modeler 14.1, artificial neural networks model was made to predict the data. By using artificial neural networks model and logistic regression model, hit ratio was grasped about the spectator satisfaction and future consumption behavior. The results are as follow: The hit ratio were high in ‘cluster 5’ for artificial neural networks model(spectator satisfaction: 71.3%, future consumption behavior: 99.3%) and logistic regression(spectator satisfaction: 71.8%, future consumption behavior: 96.5%). Furthermore, cross-tabulation and one-way ANOVA was performed to understand the cluster's characteristic which had highest hit ratio about the spectator satisfaction and future consumption behavior. And through this marketing strategy was suggested.
This study reviews whether it is valid to impose the National Sports Promotion Fund (“NSP Fund” hereafter) on green fees of private golf course. NSF Fund has a problem with the Framework Act on the Management of Charges (“MCF Act” hereafter), relevant statute of the fund, in that, in spite of requirements of MCF Act, purposes of imposing NSF Fund are not prescribed precisely and clearly, and “restrictive and supplementary” imposing principles of NSF Fund are not observed. Moreover, although discrimitive imposement of NSF Fund, which is not levied on fees of other sports facilities and public golf course, implies better economic abilities and consequent more abilities of payment of private golf membership, such discrimination is rarely meaningful now that golf has become highly public pastime like those exempt facilities and membership is of little avail to make a profit through speculation. As a result, current way of imposing NSF fund is highly likely to violate the principle of horizontal equity of tax burdens not constitutional rights to equality. Consequently, NSF Fund, which does not keep the principle nor the constitutional rights, should be repealed or improved.
This study aims to identify the characteristics of character education contained in National Physical Education Curriculum in terms of contents and construction, problems and limitation, and improvement plans by analyzing character texts such as the concept, expression mode, and context of character in goals, contents, teaching and learning methods, and evaluation of Physical Education Curriculum in accordance with the 2009 Revised National Curriculum. For criteria of analysis, character and character education were defined in a conditioning manner in terms of emotion, sociality, and morality, which grasped the implication based on the concept, meaning, and context of character text by using content analysis. The character education of National Physical Education Curriculum has currently compensated the concept of creativity‧character, and core competency as of the 2007 National Physical Education Curriculum, defining the concept of character as desirable personality, sociality, and morality, and setting up self management ability and interpersonal relationship ability as category. However, herein identified were ambiguity of the meaning between character and other concepts and ambiguity of the meaning boundary of detailed virtue in the concept of character in terms of the concept and the range of character, insufficiency of school-level systemicity and sequence between curriculum items in terms of character text selection and organization, and deficiency of the character education principles of physical education and practical teaching and learning methods of it in terms of character education methods. For next revision of National PE Curriculum, a full consideration is required for providing principles of teaching and learning methods on character and evaluation cases based on research on conceptualization of physical character, research on suitability and sequence of content subsystem of character, and cases of field practice.
