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Volume 25 (1976)
- Issue 4 Pages 159-
- Issue 3 Pages 113-
- Issue 2 Pages 53-
- Issue 1 Pages 1-
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Volume 25, Issue 1
Displaying 1-6 of 6 articles from this issue
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KASUMI SAKAKI1976 Volume 25 Issue 1 Pages 1-6
Published: March 01, 1976
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSCertain knowledge pertainning to sebum metabolism were reported in the previous report by the current investigator.
The distribution of sebaceous glands, at the forehead for example, was, then, in this study, studied by use of the following.
Procedure:
The sebum, absorbed in thin layers or filter paper, was dyed by use of Sudan Black B solution. After it was decolored by running water, photographs were taken for analyses.
The result may be summarized as follows:
1) The sebaceous glands distribution may be decided by use of photographs.
2) Larger recordings of sebaceous secretion, perhaps reflecting larger sebaceous glands, were observed around the median line of the body. The distribution seemed like mosaic, though much individual differences, according to sex, age and other con-ditions, were observed.
3) It seemed that a mental stress, like the moment of “shooting” by use air gun, results in exasperated sebaceous secretion.View full abstractDownload PDF (6329K) -
HIROMU NAGASAWA, KANDO KOBAYASHI, YOSHIO MIZUNO, HIDEJI MATSUI1976 Volume 25 Issue 1 Pages 7-15
Published: March 01, 1976
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSThree middle-aged men (55-58 years) trained for 50 weeks. Exercise consisted of twelve minutes walking on the motor driven treadmill at the load of 70% of maximum oxygen intake, three times per week.
Evaluations for maximal and submaximal work were made at 5-week intervals using treadmill walking method. Mean maximum oxygen intake improved 29.5% (26.1-39.7 %) over the 50-week period from 1.93 to 2.50 l/min, Mean maximum oxygen intake per body weight improved 24.5% from 34.9 to 43.5 ml/kg.min.
But through the training session, the maximum values of maximum oxygen intake were obtained over the 25-week to 35-week period on each subject. After that period, maximum oxygen intake were unchanged or slightly dropped neverthless the training was continued.
As the linear relationship was found between the oxygen intake and heart rates during exercise, the regression equations were calculated on each maximal test. The regression line might represent the oxygen pulse on each heart rates level during exercise. The oxygen pulse improved clealy also during submaximal work. The improve-ment of oxygen pulse were distinctive to 25-35 week period and after that no change were occured.
In the submaximal test, there was seen clear improvement of efficiency during 20 minutes walking at the load of 70%, 50%, 30% of maximum oxygen intake respectively, even after the period that the increment of maximum oxygen intake could not be caused by training.View full abstractDownload PDF (1017K) -
ETSUO MATSUMOTO, HIDETOSHI MATSUMOTO, HIROSHI SATOO1976 Volume 25 Issue 1 Pages 16-27
Published: March 01, 1976
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSThe electrocardiographic findings in more than 20, 000 athletes are studied.
I. Resting electrocardiograms (ECG) of 10, 149 high school athletes are analysed. Abnormal ECG are encountered in 12.45%. Following findings are found: Right bundle branch block (RBBB) (4.03%), Left ventricular hypertrophy (2.89%), Premature beats (1.09%), A-V block (0.86%), Right ventricular hypertrophy (0.85%) . RBBB are further analysed and divided into 4 types from the QRS pattern in V1. The frequent RBBB in young athletes is confirmed and its significance is also discussed.
II. T wave abnormalities are observed in 5 cases of resting ECGs of all this sample. Essential abnormalities are T wave inversion simulating myocardial infarction in limbs leads (usually in II, III, aVF) and precordial leads and concomitant slight elevation in precordial leads.
Physical and laboratory examinations in 5 cases disclose no evidence of organic heart disease. In 4 of 5 cases, exercise ECGs are revealed the normalisation-tendency of the T wave change. A brief discussion concerning the possible mechanisms of these changes are made.
III. ECGs of middle and old age athletes are also observed at rest and after the long distance running. The distance are different in each age-group, but all of them run at least more than 5 km. The 409 resting ECGs are taken before the running game and the 201 post running tracing are obtained as soon as possible after the game.
At rest, ECG findings suggestive of coronary insufficiency are detected in 4 of 108 samples of sixties group and in 1 of 25 samples of seventies group.
Ischemic electrocardiographic responses after the running game are found as follow: 3/51 (5.8%) of fourties group, 9/59 (15.1%) of fifties group, 20/70 (28.6%) of sixties group and 6/21 (28.6%) of over seventies group.
Arrhythmias are not so frequently observed in each group. These ischemic re-sponses suggest that medical check-up especially cardiovascular evaluation is necessary in middle and old age athletes to prevent accidents on sports.View full abstractDownload PDF (15766K) -
AKIRA NAGATA, MASUO MURO, HIRAKU KITAMOTO1976 Volume 25 Issue 1 Pages 28-36
Published: March 01, 1976
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSAnalytical method of correlation function and Fourier transformation has been applied for surface electromyogram. This study is to be aimed to investigate relation between motor-activities in isotonic muscular contractions and frequency in muscular electric discharge. By help of digital electrical computer, frequency characteristics in isotonic contraction of M. Biceps Brachii and M. Rectus Femoris have been calculated as Power Spectrum Density clearly and quantitatively.
As the result of this study, following points were revealed.
1) Fourier transformation was cleared up as the available method of physical fitness research in interpretation of surface electromyogram, on the assumption whose phenome-non was stationary in the process of statistical probability.
2) Upon isotonic contraction, high and low frequency bands were divided distinctly among muscular discharge of surface electromyogram, that were about 20Hz and 75-90 Hz bands.
3) In proportion to intensities of load and to alteration of movement velocity, high discharge frequency band showed changes of ranges of ±15Hz, but low discharge frequency band showed no change.
4) In high discharge frequency band, density of Power Spectrum of M. Biceps Brachii was larger than that of M. Rectus Femoris, but on the other hand of low dis-charge frequency band, this Power Spectrum displayed no difference between both muscles.
5) Comparing with two sorts of muscular contraction, that were isotonic and isometric, high discharge frequency band of the former was higher about 10Hz than that of the later.
6) It was supposed that this low frequency band was dependent upon tonic Neuro Muscular Units and was corresponding to slow contraction of red-colored muscles.
7) It was considered that this high frequency band depended on phasic N.M.U. and had connection with quick contraction of pale-colored muscles.View full abstractDownload PDF (1046K) -
MICHIKATSU KONNO, TOSHIKI CHIWATA, MAKOTO YASUNAGA, YUTAKA YOSHIMIZU, ...1976 Volume 25 Issue 1 Pages 37-44
Published: March 01, 1976
Released on J-STAGE: December 10, 2010
JOURNAL FREE ACCESS“Power-Duration Curves” had been measured on three middle aged subjects through-out the performance of heavy constant loaded cycling exercise with different intensities. And the results were compared with the results of previous investigation on young subjects for the purpose to know the properties of the physical work capacity of middle aged man.
The relations between the Total Power output (TP) and its maximal duration (t) is summarized as the following two equations: log TP=a-b·log t, in the case of the t shorter than about 5-6 minutes, and log TP=a′-b′·log t, in the case of the t longer than about 5-6 minutes. The relations between the Anaerobic Power output (AnP) and its maximal duration (t) is also summarized as the two equations: log AnP=c-d·log t, in the case of the t shorter than about 1-4 minutes, and log AnP=c′-d′·log t, in the case of the t longer than about 1-4 minutes. The above equations are applicable to the results of every subjects in each age group, then, the age difference in quality is hardly found. However, the values of the constants a, a′, c and c′ in the above regression equations are respectively lower in the middle aged subjects, the other hand, the age difference is scarcely found in the values of the constants b, b′, d and d. It is also said that the endurance time of the certain Aerobic Power output of the middle aged subjects are shorter than young ones within the experimental region.
It is considered that the one of the reasons, both of the endurance times of the certain Aerobic Power output and Anaerobic Power output are shorter in the middle aged subjects than young ones, is the maximal aerobic power and the maximal anaerobic capacity of the middle aged subjects are lower than young ones.
In this paper, the Aerobic Power is a mean total oxygen intake during exercise, the Anaerobic Power is a oxygen debt per endurance time of exercise. The term of the “Anaerobic” is not most suitable one, however it is used for convenience. The Total Power is defined as the sum of the Aerobic Power plus the Anaerobic Power.View full abstractDownload PDF (893K) -
1976 Volume 25 Issue 1 Pages 45-48
Published: March 01, 1976
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSDownload PDF (511K)
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