江南飘雪 发表于 2007-9-6 10:18

游泳能增强心脏功能

<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman"><FONT size=3>游泳能增强心脏功能</FONT></SPAN></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><FONT size=3><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">游泳时，人体处于平卧姿势，在水的压力作用下，肢体的血液易于回流心脏；而且游泳，时心跳频率加快，心输出量大大增加。长期从事游泳锻炼，心肺体积呈现明显的运动性增大，心脏收缩更加有力；血管壁厚度增加，弹性加大，每搏输出量增多。一般人安静时心率为</SPAN><SPAN lang=EN-US>70-80</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">次／分，每搏输出阻量约</SPAN><SPAN lang=EN-US>60-80</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">毫升；而经常参加游泳锻炼的人安静时心率可达</SPAN><SPAN lang=EN-US>40-60</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">次／分，每搏输出量高达</SPAN><SPAN lang=EN-US>90-120</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">毫升。游泳还能刺激血液中运输氧气的血蛋白含量增多，从而提高人体摄氧能力。据测定，游泳运动员每</SPAN><SPAN lang=EN-US>100</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">毫升血液中血红蛋白含量，男子为</SPAN><SPAN lang=EN-US>14-16</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">克，女子为</SPAN><SPAN lang=EN-US>13-15</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">克；而一般而人只分别有</SPAN><SPAN lang=EN-US>12-15</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">和</SPAN><SPAN lang=EN-US>11-14</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">克。</SPAN></FONT></P>

寒江搏浪 发表于 2007-9-6 10:47

<FONT size=3><FONT face=宋体>一般人安静时心率为</FONT><SPAN lang=EN-US>70-80</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: " Roman?? New ?Times mso-hansi-font-family: Roman?; Times>次／分，每搏输出阻量约</SPAN><SPAN lang=EN-US>60-80</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: " Roman?? New ?Times mso-hansi-font-family: Roman?; Times>毫升；而经常参加游泳锻炼的人安静时心率可达</SPAN><SPAN lang=EN-US>40-60</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: " Roman?? New ?Times mso-hansi-font-family: Roman?; Times>次／分，每搏输出量高达</SPAN><SPAN lang=EN-US>90-120</SPAN><SPAN style="FONT-FAMILY: 宋体; mso-ascii-font-family: " Roman?? New ?Times mso-hansi-font-family: Roman?; Times>毫升。游泳还能刺激血液中运输氧气的血蛋白含量增多，从而提高人体摄氧能力。学习了!</SPAN></FONT>
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