A cross-adaptation in the cardiovascular and hormonal responses in rats to differene types of stress by physical training
| Project/Area Number |
05680090
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
体育学
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| Research Institution | Yamaguchi University |
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Principal Investigator |
MORIMOTO Keiko Yamaguchi univ., Liberal arts, Associate prof., 教養部, 助教授 (30220081)
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| Co-Investigator(Kenkyū-buntansha) |
NISHIYASU Takeshi Yamaguchi univ., Liberal arts, Assistant prof., 教養部, 講師 (90237751)
TAN Nobusuke Yamaguchi univ., Liberal arts, Associate prof., 教養部, 助教授 (00179920)
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| Project Period (FY) |
1993 – 1994
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| Project Status |
Completed (Fiscal Year 1994)
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| Budget Amount *help |
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1994: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1993: ¥1,400,000 (Direct Cost: ¥1,400,000)
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| Keywords | Arterial blood pressure / Heart rate / stress / ACTH / Norepinephrine / Epinephrine / Cross-adaptation / Running training |
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| Research Abstract |
1. Effect of running training on the cardiovascular responses in rats to acute physical stress.
Physical training was performed by running at 30 m/min for 1h/day, 5 days a week. After eight weeks of training, rats were used in the experiments. The heart rate and blood pressure responses induced by physical stress (running at 20 m/min for 15 min) were reduced in the training group.
2. Effect of running training on the cardivascular responses in rats to cage-switch stress.
After eight weeks of training same rats were exposed to cage-switch stress. After the rats were placed in the novel environment, blood pressure and heart rate significantly increased. There were no statistically significant differences between blood pressure and heart rate responses induced by cage-switch stress in the control group and those in the training group.
3. Effect of running training on adrenocorticotrophic hormone (ACTH) responses in rats to different types of stress.
The ACTH response induced by swimming stress was significantly reduced after 4 and 10 weeks of training by running at 20 m/min for 1h/day, 5 days a week. The training also attenuated the ACTH response induced by cage-switch stress, suggesting that a cross-adaptation occurred.
4. Effect of exercise intensity for training on ACTH and catecholamine responses in rats to cage-switch stress.
Three training groups of rats were trained by running at three different speeds (10 m/min, 20 m/min and 30 m/min) for 1h/day, 5 days a week. After eight weeks of training rats were exposed to cage-switch stress. This experiment suggests that exercise intensity for training affects the cross-adaptation in the ACTH and the catecholamine responses induced by cage-switch stress.
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Report
(3 results)
Research Products
(4 results)
