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Volume 26 (1977)
- Issue 4 Pages 159-
- Issue 3 Pages 103-
- Issue 2 Pages 59-
- Issue 1 Pages 1-
Volume 26, Issue 4
Displaying 1-5 of 5 articles from this issue
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MASAHARU OHNAKA1977 Volume 26 Issue 4 Pages 159-164
Published: December 01, 1977
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSThe endurance time in the static exercises was measured in 638 male and female subjects, aged 11 to 79 years. Three types of exercises were used in this study : 1) lifting up the load equal to one-third of the maximal back strength, 2) holding the 9 kg of iron bar horizontally by the forward stretched upper extremities, and 3) chinning. Maximal back strength of the young adult females was equal to about 60% of the males. Endurance time in lifting is shorter in females than that in males when the same weight was loaded, however, this was reverse when load corresponding to onethird of the respective maximal back strength was used. Sex differences in endurance time were not observed in puberty and senility, suggesting the hormonal participations in muscular morphology and compositions related to the muscular strength. Endurance times in holding the iron bar and chinning extended with increasing ages. Relations between the endurances of the static exercises and some indices of the nutritional status, especially of breadth growth, were briefly discussed.View full abstractDownload PDF (633K) -
TASUKU SATO, TOSHIHIRO ISHIKO, JUNICHIRO AOKI, TATSUO SHIMIZU, TAKASHI ...1977 Volume 26 Issue 4 Pages 165-176
Published: December 01, 1977
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSThis report deals with the response of heart rate, blood pressure and respiratory rate when the subjects of different ages and sexes worked on a bicycle ergometer. The subjects were 126 healthy persons of both sexes. They consisted of 8 groups : prepuberty male (N=15) and female (N=16), puberty male (N=20) and female (N=18), young adult male (N=15) and female (N=16), middle aged male (N=17) and female (N=9) . All subjects tried pedalling exercise with 3 kinds of loads, i.e., 5kgm/kg/min, 10kgm/kg/min and 12.5 kgm/kg/min for 6 minutes.
Heart rate was calculated from chest lead ECG and respiratory rate was measured by the thermistor method continuously recorded before, during and after exercise. Blood pressure was measured by Riva Rocci sphygmomanometer before exercise, at the early stage of recovery and in 10 minutes after exercise.
The results of this study are summarized as follows
1) In both sexes the heart rate decreased with age in resting status and exponentially increased during moderate and heavier exercise. A linear relationship was found between the work load and the exercise heart rate.
In males the heart rate during light exercise was high in the prepuberty and the puberty, low in the young adult and the middle aged. But the heart rate during heavy exercise in the middle aged was extremely high. The heart rate in females was higher than that in males when the same work load was given in both sexes. The rising phase of heart rate in prepuberty was the earliest of 4 age groups.
2) The systolic blood pressure and the pulse pressure in resting status increased with age. As for the blood pressure during exercise, it was low in the youth and high in the middle aged. The blood pressure after exercise in the middle aged males was the highest of 4 groups. Generally in all females the systolic blood pressure and the pulse pressure increased with work load, but the former levelled off during heavy exercise.
3) The respiratory rate during exercise increased rapidly, but when the exercise was stopped, the increased respiratory rate returned rapidly to the resting level. As for the respiratory rate, in both sexes it decreased with age from the prepuberty to the middle aged in resting status and during exercise. The sex difference of the respiratory rate during heavy exercise was large.
4) In the youth the correlation coefficient between the heart rate and the blood pressure was high. Therefore, it was suggested that the heart rate was important in adaptation to exercise.View full abstractDownload PDF (1286K) -
KOJI KURODA, NOBUYASU ICHIKAWA1977 Volume 26 Issue 4 Pages 182-190
Published: December 01, 1977
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSRecently leisure sports are gaining popularity. One of them is a golf. Golf population is about seven millions in Japan, nowadays. It is very good to participate in sports to keep up with our physical fitness. But it must be based on our physical strength. If we would like to make a rapid progress in the golf or feel pleasant with longer shot using a woody head club, there will be over burden and golfer's rib fracture may regut.
The head of golf club makes centrifugal force, and we turn rapidly our body to gain more powerfull impact. If we play golf taking no account of our physical condition for longer time, for more than several days a week, these repeated stresses may be one of the cause of the golfer's rib fracture.
At time, golfer (average golfer) vist our clinic complaining of pain in the chest, back, shoulder and neck. Though examination of these patients and physical sings and their progresses, we think that the methods of training of golf are not appropriate. Then we investigated the causes, mechanism and the character of golfer's rib fracture.
In this parper we reported 12 cases of such fractures, we find, to my knowledge, 31 cases have been reported in Japan and only 3 cases in the world literature. But we do not think that this fracture is a rare one and many cases may be unnoticed to natural tendency toward rapid spontaneous healing.View full abstractDownload PDF (6314K) -
1977 Volume 26 Issue 4 Pages 191-193
Published: December 01, 1977
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSDownload PDF (300K) -
1977 Volume 26 Issue 4 Pages 195-200
Published: December 01, 1977
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSDownload PDF (781K)
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