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Volume 49 (2000)
- Issue 6 Pages 621-
- Issue 5 Pages 543-
- Issue 4 Pages 459-
- Issue 3 Pages 355-
- Issue 2 Pages 225-
- Issue 1 Pages 1-
Volume 49, Issue 5
Displaying 1-10 of 10 articles from this issue
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JIAN WU, JUN YAMAKAWA, IZUMI TABATA, YUTAKA YOSHITAKE, MITSURU HIGUCHI2000 Volume 49 Issue 5 Pages 543-548
Published: October 01, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSIn this study, we investigated the effects of a 2-year swimming program on suppressing bone loss in postmenopausal women. There were 22 subjects who participated in the swimming program (mean age 59.5 yr) and 19 controls (mean age 59.3 yr) . The program consisted of one-hour exercise sessions ; and the swimmers had on average 1.5 sessions per week. BMD at the lumbar spine (L2-L4) and proximal femur (neck, trochanter, and Ward's triangle) were measured by dual X-ray absorptiometry (DXA) ; and leg extensor power was measured using a dynamic leg extensor power rig. All the measurements were taken at baseline, 1 and 2 years. Height, weight, calcium intake and daily activity profiles were similar between the two groups, and these changed little throughout the experiment. In regard to leg extensor power, the swimming group had a significant increase at 1 and 2 years. At 2 year, the swimming group demonstrated 4.4%, 5.7% and 3.4% increases in BMD at the femoral neck, trochanter and Ward's triangle, respectively, while the control group showed slight decreases of BMD at the femoral neck (-0.2%) and Ward's triangle (-1.4%) . Significant differences in the rate of change in BMD at each site were observed between the two groups. The swimming group showed a decrease in lumbar spine BMD, as did the control group and the rate of the decline did not differ between the two groups. This study suggests that a 2-year swimming program for postmenopausal women can induce the beneficial effects of retarding bone loss at the proximal femur site and increasing leg extensor power.View full abstractDownload PDF (721K) -
TAKASHI NIGORIKAWA, MAMI KAMIMURA, KAZUO OISHI2000 Volume 49 Issue 5 Pages 549-559
Published: October 01, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSThis study was designed to investigate the relationships between the tendencies of Type A behavior pattern (TABP) and daily sports activity for college students, under a hypothesis that daily physical training weakens the TABP tendencies. A total of 2587 students in Japanese colleges volunteered. They were divided into two groups ; an athlete group and a non-athlete group. KG's Daily Life Questionnaire was used to investigate the tendency of TABP. The athlete group showed higher TABP scores than those of the non-athlete group. Additionally, the higher competition level group showed higher scores of TABP than those of the lower level group. Contrary to the hypothesis, the athlete group showed higher TABP tendencies than those of the non-athlete group. This result might be caused by several factors, such as the nature of competition, high levels of stress involved in competitive sports and/or specific backgrounds of Japanese college sports clubs.View full abstractDownload PDF (1120K) -
AKIRA TAKAHASHI, SHOZO SUZUKI, HIROHIKO TAKAHASHI, TASUKU SATO2000 Volume 49 Issue 5 Pages 561-569
Published: October 01, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSThe purpose of this study was to clarify the effects of amino acid supplementation on mental and physical stress during severe exercise. 20 male college students were assigned to amino acid treated group (group AA) and placebo treated group (group P), each containing 10 subjects, and performed 1600 m-run relay for 24 hours. Each subjects of AA group received 1 g of amino acid powder, containing 34% of branched-chain amino acid (BCAA), after each work bout. The score of rating of perceived exertion (RPE) and category rate of pain scale (CPS) for each work bout were recorded. Scoring of profile of mood states (POMS) was performed and blood samples were drawn at pre-, mid-, and post-session. Total running distance was similar in both groups. In group AA, compared with group P, (1) total score of RPE and CPS through 25 work bouts and plasma cortisol concentration (C) at post- was significantly lower, and (2) molar ratio of plasma free testosterone concentration (FTS) to C (FTS/C) at mid- was significantly greater. In group P alone, plasma BCAA concentration, FTS, FTS/C, and POMS score about ‘tension-anxiety’, ‘anger-hostility’ and ‘vigor’ decreased significantly over time. Our data suggest that BCAA administration during severe exercise may diminish mental or physical stress, inhibit FTS/C decrease and be effective in maintaining aggressive mentality.View full abstractDownload PDF (903K) -
AIKA HAGIWARA, YOKO HAYASHI, YOSHIO NAKAMURA, ISAO MURAOKA2000 Volume 49 Issue 5 Pages 571-579
Published: October 01, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSThe purpose of this study was to examine the effect of class walking on lifestyle activity. The subjects were recruited from the community around the university, and volunteered to eight weeks intervention. The intervention groups were 2 different walking program groups that included a class-walking group (A : n=32) and a voluntary walking group (B : n=31) ; and the control was a blood-pressure monitor group (C : n=22) . Only A group participated in a walking class with group instruction. Physical activity was measured by pedometer counts before the start of the intervention, during the 8-week intervention and again as follow up four months afterwards. In A group, the number of pedometer counts, during the group walking activity of the 5 th and 6 th weeks, was measured in order to evaluate the number of voluntary steps on the class-walking day. Although there was no significant difference among the three groups in daily activity before the intervention, the activity of A group (12367±3290) and B group (9988±3461) was significantly increased during the intervention. Also, there were significant differences between A and B, A and C. As for A group, the number of steps due to group walking (9025±584 steps) enhanced the daily activity on the class-walking days (16191±3988 steps), but significantly attenuated the voluntary steps on the class-walking days (7166±3988 steps), which did not significantly differ from the baseline of the daily activity. The number of steps on the non-class walking days (i. e. steps other than those taken on the class-walking day ; 11719±3454 steps) was not significantly different than that of B. There was significant enhancement of daily activity 4 months after the intervention for A (11487±4057) and B (9564±2545 steps), but not for C (9070±3485 steps), compared to the baseline. There was not a significant difference between the daily activity of A and B after the intervention. These data suggest that the instruction given and the steps taken in class walking enhance daily activity during the intervention period, and that voluntary steps play a more important role in whether or not one remains active and adheres to regular exercise.View full abstractDownload PDF (1167K) -
ATSUKO SUGANO, TAKEO NOMURA2000 Volume 49 Issue 5 Pages 581-588
Published: October 01, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSThe aim of the present study was to investigate the influences of acute water and land exercises on pain, state anxiety and salivary cortisol concentration in chronic low back pain (LBP) patients. Ten myofascial LBP patients participated in the experiment. Their mean age was 60.2 (SD : 9.0) yrs, and their mean duration of pain was 5.6 (3.7) yrs. The water and the land exercise programs consisted of the same physical movements, and prescribed according to the intensity of ratings of perceived exertion (RPE) 11. The heart rate of the participants was measured during exercise to monitor exercise intensity. Results showed that the mean heart rate during exercises (except Warming up and Cooling down) were 88.1±1.6 bpm for water exercise, and 97.0±2.1 bpm for land exercise (p<0.01) . Significant decreases were found in pain score (visual analogue scale ; VAS, p<0.05) and state anxiety (p<0.01) after water exercise. Salivary cortisol concentration showed a significant increase after water exercise (p<0.05) . No significant changes were shown after land exercise in VAS, state anxiety and salivary cortisol concentration. From these results, we suggested that acute water exercise has the benefit in chronic LBP patients of decreasing pain and state anxiety compared with acute land exercise. In addition, salivary cortisol concentration might be much more influenced by exercise intensity than physical or psychological stress such as pain and anxiety.View full abstractDownload PDF (969K) -
JUNDONG KIM, SHINYA KUNO, RIKA SOMA, KAZUMI MASUDA, KAZUTAKA ADACHI, T ...2000 Volume 49 Issue 5 Pages 589-596
Published: October 01, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSThe purpose of this study was to investigate the hypothesis that the reduction in walking ability is due to muscle atrophy in the lower limb muscles with aging using equational structure modeling as well as investigate the influence of muscle on walking ability. The subjects consisted of 127 persons (57 males and 70 females) aged 20-84 year, who were grouped into 6 age brackets of 20-39, 40-49, 50-59, 60-69, 70-74, and 75 or older. Using MRI, muscle cross-sectional area was measured on psoas major and thigh muscle (divided into extensor and flexor) . For walking patterns, each subject walked along a 7-m walking passage at normal speed for VTR-recording of the motion. The resulting pictures were used to analyze stride length, trunk inclination and walking speeds. Walking speeds showed a statistically significant decrease in value from the 50's age group in males and the 60's age group in females when compared with the 20-39 age bracket (p<0.05) . In males, a significant co-relationship was observed only between the muscle cross-sectional area of thigh extensor and walking speed (p<0.01) while in females, a significant co-relationship was found between the muscle cross-sectional area of psoas major (p<0.001) /thigh muscle extensor (p<0.01) and walking speed. These results indicate that the muscle atrophy with aging in psoas major and thigh muscle extensor is a factor responsible for the decrease in walking speed. Meanwhile, a difference in sex was observed between the muscle cross-sectional area of psoas major and walking speed. It was considered that the muscle atrophy rate of the female's psoas major being higher than the male's influenced this. Furthermore, it was suggested possibility that the decline of walking ability is due to decreased muscle mass of the lower limbs with aging.View full abstractDownload PDF (1023K) -
TOMOYOSHI KOMIYAMA, TATSUO KAWAI, TOSHIAKI FURUBAYASHI2000 Volume 49 Issue 5 Pages 597-601
Published: October 01, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESS -
YOSHINOBU MATSUMOTO, FUMIE HIRAKAWA, AKIFUMI ONO, SYUJI MATSUEDA, TETS ...2000 Volume 49 Issue 5 Pages 603-608
Published: October 01, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSDownload PDF (621K) -
2000 Volume 49 Issue 5 Pages 609-615
Published: October 01, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSDownload PDF (1083K) -
2000 Volume 49 Issue 5 Pages 616-621
Published: October 01, 2000
Released on J-STAGE: September 30, 2010
JOURNAL FREE ACCESSDownload PDF (785K)
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