All issues
Volume 35, Issue 1
Displaying 1-7 of 7 articles from this issue
- |<
- <
- 1
- >
- >|
-
—A CASE OF JAPANESE NATIONAL MEN'S FIELD HOCKEY PLAYERS—RYUICHI KATSUMURA, AKIRA NAKAMOTO, MITSUO NAKANISHI, NAMIKO IKEDA, NOR ...1986 Volume 35 Issue 1 Pages 1-10
Published: February 01, 1986
Released on J-STAGE: December 10, 2010
JOURNAL FREE ACCESSIn order to find the characteristics of physique and physical fitness of the field hockey players, the data were collected from the Japanese Men's Team members in anthropometric measurements and physical fitness test during the last six years since 1978.
From the data collected for this study the following observation were made :
1. The Japanese National Men's Field Hockey players had superior measurements in agility, especially, Side-Step-Test and cardiorespiratory function but inferior measurements in muscular strength and flexibility than players in other activities17) ; their physique were smaller than others.
2. When compared with Tokyo Olympic Field Hockey players of twenty years ago, some increments in measurements were recognized in weight, circumferences, muscular strength and cardiorespiratory function; but not too much differences were observed in various longitudinal measurements, jumping reaction time, simple reaction time and flexibility.
3. When individual measurements of three years span were compared longitudinally, circumferences like chest girth and upper arm girth, Vertical jump and Side-Step-Test were increased but cardiorespiratory function declined with the age. The rest of the items did not change much during the span of three years.View full abstractDownload PDF (1045K) -
YOSHIAKI NISHIHIRA, HIDEO ARAKI1986 Volume 35 Issue 1 Pages 11-21
Published: February 01, 1986
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSThe view which movement-associated cerebral potentials preceding voluntarily, self-paced movement are recorded through the human scalp is well known at present. Then, it is the focus of the present study that what functional significance of each component is. However, the present study reports of N 1 potential constituting movement-associated cerebral potentials were almost based on data of right handedness. Therefore, the authors thought that only data obtained from right-handedness are inadequate because of elucidating in more detail functional significance.
The purpose of present study was intended to investigate functional significance of N 1 potential through the comparison between the distribution over the scalp of N 1 potential of right-handedness and left-handedness.
The following results were obtained;
1) The amplitude of N 1 potential preceding voluntary right hand movement in case of right-handedness showed predominantly high tendency at Cz, C3 and also, showed high tendency at Cz, C3 in case of left-handedness. But, N1 potential of left-handedness did not show more significant tendency at Cz, C3 than right-handedness in voluntary right movement.
2) The amplitude of N1 potential preceding voluntary left hand movement showed high tendency at Cz, C4 in case of right-handedness. But, in case of left-handedness, there were the cases that the amplitude of N1 potential showed high tendency at Cz, C4 and did not show.
3) The amplitude of N1 potential preceding voluntary bilateral simultaneous movement showed high tendency at Cz, C3 in case of righ-handedness and showed clear asymmetry. In case of left-handedness, there were two types of subjects who showed asymmetry and not.
From the results described above, the authors may conclude that the findings which N1 potential shows preponderance over the hemisphere contralateral to the moving limb are based persistently on data of right-handedness and would not be able to apply to data of left-handedness. However, the results of the present experiment were applied to subjects assessed by assesment criterion of dominant and none-dominant hand described in“EXPERIMENT METHOD”and there was the limit of the present experiment in the assessment method of dominant and none-dominant hand.View full abstractDownload PDF (906K) -
—BISECTION AND MINIMUM DIVISION OF THE RANGE OF MOTION IN FINGER JOINT, AND THE THRESHOLD FOR TWO-POINT DISCRIMINATION—HIROMI UCHIDA, HIROSHI KURATA, YOSHINORI OGAWA, KYOZO YONEMOTO1986 Volume 35 Issue 1 Pages 22-30
Published: February 01, 1986
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSTo examine personal space perception, a method of identifying joint position was determined by having the subject equally bisect the joint angle, by producing a minimum increment in change of position and by selecting a threshold for two-point discrimination using the metacarpophalangeal joint of digits 2-5.
Eight healthy adults (6 males and 2 females) were used as subjects. The subjects' eyes were covered at all times to prevent any visual feedback.
Each metacarpophalangeal joint of digits 2-5 was extended, flexed and pointed to the bisection position in 6 sec (about 2 sec in each position) . The difference in the bisection position selected using the index finger with the shoulder, elbow and hand in variety of positions was determined. The deviation from the mid-bisection point and the standard deviation were less when the hand was positioned most comfortably and near the face (“natural and near”) than when the hand was positioned in the more uncomfortable position and further from the face (“unnatural and further”) .
In a second test, the index finger was moved from full extension to the full flexion in increments as small as possible at a rate of one change in position per second. Again, the effect of arm position was determined.
In case of“the natural and near”position, each increment in joint position was smaller than in“the unnatural and further”position.
In“the natural and near”position, the two point threshold was smallest of all. It was measured at the thumb side of right palm in the proximo-distal direction.
These results suggest that personal space perception of metacarpophalangeal joint is affected by the position of adjoining limb segments.View full abstractDownload PDF (5054K) -
MASATOSHI TANAKA, TADAKATSU OHNAKA1986 Volume 35 Issue 1 Pages 31-38
Published: February 01, 1986
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSThe point test for evaluation of resistance to frostbite has been done in many fields; sports science, industrial hygiene, clinical medicine, research, etc. Shortening of the measurement time is necessary in fieldwork or mass test. While immersed the peripheral body parts in cold water, blood pressure response and change of blood circulation are important and meaningful.
In this experiments, the method of a point test was discussed in relation to blood pressure response, heat flow and shortening of the test time from the practical viewpoint for measurement of resistance to frostbite. Following results were obtained.
1) Even if immersed one finger in cold water, there was temporarily an increase in blood pressure. The indices of local cold resistance to frostbite in the group whose blood pressures increased to a higher degree with cold stress tended to be weaker than those of the other groups.
2) The change in heat flow as an index of peripheral blood circulation occurred faster and larger than that in skin temperature. It may be useful to measure heat flow for the people whose has weak local cold resistance such as raynaud phenomenon.
3) TTR and TFR in indices of a point test can be generally measured in 10 min after water immersion with the first occurrence of CIVD. Shortening of the test time was demanded in fieldwork or mass test. Correlation coefficient between MST and mean skin temperature after 15min (MST5-15) was higher (r>0.92) . The regression equation was MST=1.042M5-15+1.079. Therefore, even if the measurement time is 15 min, MST can be added for evaluation of resistance to frostbite in a point test.View full abstractDownload PDF (775K) -
SHUICHI KOMIYA, TOSHIKI CHIWATA1986 Volume 35 Issue 1 Pages 39-46
Published: February 01, 1986
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSThe validity to estimate changes in body fat and lean body mass (LBM) through total body water and prediction equation based on triceps and subscapular skinfolds was evaluated after a jogging-type training program. Eight obese boys and 11 obese girls had their total body water determined by D2O dilution method and underwent a complete series of anthropometric measurements at begining and end of a 2-year program. There was no significant reduction in body weight but a significant change in body water as determined by D2O dilution method. When compared to the body water method, the prediction equation was found to be highly inconsistent. The change values of the prediction equation was significantly higher than the body water method. The actual changes in LBM and % Fat were found to have low correlations with the predicted changes of boys. In addition, the prediction equation gave significantly higher water content of LBM than criterion value.
This suggests that the practice of using prediction equation to estimate actual changes in body composition parameters after physical training program is basically unsound when used for research purposes.View full abstractDownload PDF (858K) -
TADAHIRO SANO1986 Volume 35 Issue 1 Pages 47-52
Published: February 01, 1986
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSEffectfs of unsupervised long-term aerobic exercise on glucose, lipids metabolism and obesity were investigated. In 47 patients with glucose intorelance, impaired lipoprotein metabolism or obesity, maximum aerobic power (VO2max) was predicted from the results of treadmill test under Balke's protocol. Aerobic exercise program, devised by Cooper (1970, '72, '77) to quantify intensity, duration and frequency of exercise so that different activities and sports, such as walking, jogging, cycling, swimming etc., were exchangeable each other, was prescribed for each patients in accordance with the fitness classification. Each patient was instructed to perform unspervised exercise with the intensity kept within 40-70 % VO2max refering to own pulse rate. Meanwhile, OGTT, levels of serum lipids and body weight were examined. Criteria of improvement had been set up in advance. The results were analyzed with reference to exercise records including intensity of actually performed exercise, which was calculated by means of documents of self-measured pulse rate immediate after each exercise, or by means of heart rate during exercise determined from a heart rate recorder.
Overall results showed improvement rates of 22.9% in 35 patients engaged in exercise with an exercise intensity of below 40 % VO2max (low intensity exercise, LIE), and 73.8% in 42 patients with an exercise intensity of 40-70% VO2max (moderate intensity exercise, MIE) . The proportion of patients belonging to MIE group was significantly (P<0.001) higher in the patient group obtained improvement in glucose, lipids metabolism or obesity, comparing to patients without improvement. No significant differences in improvement rates were seen between the patient groups whose exercise duration were below 1 year, 1-2 years and above 2 years, and, between the patient groups whose exercise frequencies were 3-4 times per week or above 5 times, when analysed within each of the LIE or MIE groups respectively. Improvement rates were significantly (P<0.05-0.001) higher in MIE group comparing to LIE group, when analysed within each of the patient groups whose exercise duration were below 1 year, 1-2 years and above 2 years, and, between the patient groups whose exercise frequencies were 3-4 times per week and above 5 times respectively. The results suggested that 1) exercise intensity rather than exercise frequency or duration was the more important factor, and 2) exercise with the intensity kept within 40-70% VO2max provided beneficial effects, in improving glucose, lipids metabolism or ohesity.View full abstractDownload PDF (756K) -
1986 Volume 35 Issue 1 Pages 53-67
Published: February 01, 1986
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSDownload PDF (2076K)
- |<
- <
- 1
- >
- >|