[Zhou, Zhenhua; Li, Zhihong] Hunan City Univ, Dept Phys Educ, Yiyang, Peoples R China.
Neuropeptide Y (NPY);Calcitonin gene related peptide (CGRP);denervation;mobilization;Bone mineral density (BMD)
This paper observed the changes of neuropeptide substance (calcitonin gene related peptide, CGRP; neuropeptide Y, NPY) level and its effects on bone mineral density, using the method of cutting off the nerves and fixing the hind legs. We found that: The content of NPY was highly related with BMD in denerved and immobilized groups. It can be observed as a key factor of Osteoporosis' formation. But the nerve integrity is a key for normal CGRP expression. Dynamic observation of changes of the CGRP content can forecast the formation and development of osteoporosis in a certain extent.
[Gong Yingying] Hunan City Univ, Phys Educ Inst, Yiyang 413000, Hunan, Peoples R China.
[Gong, YY] Hunan City Univ, Phys Educ Inst, Yiyang 413000, Hunan, Peoples R China.
ocean water;exercise mice;fatigue
The objective of the paper was to discuss the anti-fatigue action of ocean water with different hardness on exhausted swimming mice. Mice were chosen and randomly divided into RO group, D25 group, D100 group, D300 group and D600 group with 20 mice for each group. The mice of the control group, RO group were fed with the 15 ml/kg common fresh water reverse osmosis water by gavage; 15 ml/kg ocean water of four different kinds of hardness were given to the 4 experimental groups by gavage. The experiment lasted for 30 days. Mice loaded swimming time, hepatic glycogen reserve, serum urea nitrogen after swimming and changes in blood lactic acid content before and after swimming were observed. The ocean water obviously prolongs mice swimming time (P < 0.05); ocean water can lower post-exercise mice serum lactic acid level and the difference is significant (P < 0.05); ocean water mice hepatic glycogen reserve is higher than that of the RO group (P < 0.05). After swimming, the serum urea content mice of ocean water group is obviously lower than that of RO group (P < 0.05). It was concluded that the ocean water can postpone the occurrence of body sports fatigue and enhance the body exercise tolerance.