著者

有吉 晃平 玉城 拡 辰見 康剛

出版者

九州共立大学

雑誌

九州共立大学研究紀要 = Study journal of Kyushu Kyoritsu University (ISSN:21860483)

巻号頁・発行日

vol.5, no.2, pp.69-74, 2015-03-31

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The purpose of this study was to examine the effects of ballistic stretching in a warm-up on sprintperformance. Twenty three healthy participants with CAI (23 men: 19.9±1.04yrs, 169.3±6.21cm, 65.8±10.84kg) volunteered to take part in this study. Participants performed a 30 m sprint after a warm-upprotocol that commenced with 3 minutes jogging, followed by ballistic stretching (BS) or no stretching(NS). The BS routine included 6 exercises for each 10 seconds targeting the lower-body musculature. Thetrials were separated by a week and they were randomly assigned. Results indicated that BS of the sprinttimes was quicker than NS, especially in 0-10m (p<0.05). These results suggest that inclusion of the 10seconds BS routine in worm-up enhances sprint performance compared to no stretching.

著者

長谷川 伸

出版者

九州共立大学

雑誌

九州共立大学研究紀要 = Study journal of Kyushu Kyoritsu University (ISSN:21860483)

巻号頁・発行日

vol.5, no.1, pp.23-28, 2014-09-30

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The purpose of this study was to investigate the muscle activation levels of the hip muscles duringpitching motion as ball speed was increased. Six college baseball pitchers were participated in thisstudy. Surface electromyography data were recorded in pivot leg from 6 muscles : adductor longus(AL), gracilis (GR), adductor magnus (AM), rectus femoris (RF) , biceps femoris (BF) and gluteus medius(GM). The pitching motion was divided into 5 distinct phases: wind-up, early cocking, late cocking,acceleration, follow-through. The results demonstrated that high level muscle activity (greater than 40%maximal voluntary contraction) was found in GM during early cocking phase, and in AL, GR, AM andBF during late cocking phase, and in AL, GR and BF during acceleration phase. Then, the activity levelof the hip muscles in the slow ball pitching and fast ball pitching was compared. Significantly highermuscle activity was showed in fast ball pitching in AL, GM, and BF during early cocking phase, in BFand AL during late cocking phase, and in AL, GM, and RF during acceleration phase. The findings fromthis study indicate that high muscle activity have been shown in the abductor of the hip joint duringearly cocking phase that produce translational movement, and high muscle activity have been shown inthe adductor and extensor of the hip joint during late cocking phase and acceleration phase that producerotational movement.

著者

長谷川 伸

出版者

九州共立大学

雑誌

九州共立大学研究紀要 = Study journal of Kyushu Kyoritsu University (ISSN:21860483)

巻号頁・発行日

vol.9, no.1, pp.49-56, 2018-09-28

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The purpose of this study was to investigate the characteristics of the muscle morphology of limbsand trunk in baseball pitchers with high ball speed. The high ball speed group (average ball speed isover 140 km/h : n=7) and the low ball speed group (average ball speed less than 130 km/h : n=9) werecompared for muscle mass and muscle thickness. Muscle thickness was measured bilaterally with B-modeultrasonography. In the lean body mass and muscle mass (whole body, upper limbs, lower limbs andtrunk), the high ball speed group showed a significantly higher value than the low ball speed group. Incomparing the muscle thickness of muscle groups, the high ball speed group showed significantly greatermuscle thickness at 5 sites (forearm, lumbar superficial, buttocks, back of thigh, posterior lower leg) onthe throwing side than the low ball speed group. On the other hand, the high ball speed group showedsignificantly greater muscle thickness at 6 sites (anterior abdomen, lateral abdomen, lumbar superficial,buttocks, back of thigh, posterior lower leg) on the nonthrowing side than the low ball speed group.In the comparison of the muscle thickness of individual muscles, the high ball speed group showedsignificantly greater muscle thickness in 3 muscles (spinal erector, gluteus maximus, gastrocnemius) onthe throwing side than the low ball speed group. Also, the high ball speed group showed significantlygreater muscle thickness in 7 muscles (pectoralis minor, rectus abdominis, abdominal internal oblique,transversus abdominal, erector spinae, gluteus maximus, biceps femoris) on the non-throwing sidethan the low ball speed group. These results indicate that baseball pitchers with high ball speed have agreater muscle thickness in trunk rotators and leg extensors.

著者

樋口 行人 大下 和茂

出版者

九州共立大学

雑誌

九州共立大学研究紀要 = Study journal of Kyushu Kyoritsu University (ISSN:21860483)

巻号頁・発行日

vol.10, no.1, pp.97-101, 2019-09-30

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Previously, we constructed the e-learning support system which measures up to the qualificationexam for certified "Health Fitness Programmer", and suggested that the system is effective forimprovement the passing rate of the exam (Higuchi & Oshita, 2015). The purpose of this study wasto investigate the characteristics of individuals who failed the exam by analyzing the answers of theexercises in the e-learning system in detail. The participants were 48 qualification examinees using oure-learning system. The exercises in e-Learning consisted of 11 fields and 300 questions. The answers ofthe exercises in each field were calculated the initial score (IS), the average score (AS) and the highestscore (HS) for each participant. Further, these scores in each field were compared between participantswho passed the qualification exam (PASS, n = 38) and those who failed (FAILE, n = 10). HSs of almostfields were not significantly different between PASS and FAILE. IS in health policy field and AS in noncommunicablediseases (NCDs) field were significantly lower in FAILE than in PASS (p < 0.05). IS inNCDs field and HS in health fitness theory field tended to be lower in FAILE than in PASS (p < 0.10).Especially in NCDs and health fitness theory fields, score differences between PASS and FAILE werelarger in AS than in IS. Therefore, participants who failed the qualification exam fewer improved theirscores in these two fields even after repeated exercises, suggesting that these fields are weak point ofthem. These results suggest that it is necessary to devise learning contents that get interesting in theNCDs, health fitness theory, and health policy fields for improvement the passing rate of the qualificationexam for certified "Health Fitness Programmer".

著者

森 祐司

出版者

九州共立大学

雑誌

九州共立大学研究紀要 = Study journal of Kyushu Kyoritsu University (ISSN:21860483)

巻号頁・発行日

vol.5, no.2, pp.1-8, 2015-03-31