Thalmann G, Steinhardt M, Lyhs L
Arch Exp Veterinarmed. 1975;29(1):99-110.
29 pigs (meat type of German Landrace) were kept in groups in a confined space (0.48 m2 a head; group E), in a normal area (1.2 m2 a head; group N) or in a normal area plus daily exercise (group L). After having been kept under these conditions for specified periods, the pigs were made to run on a band moving at 1.1 metres a second for 2 km. During exercise the heart rate increased to 275 beats a minute in group E and only 180 in group L. In group L the recovery pulse rate was greater and the absolute and relative heart weight smaller than in group L; rectal temperature after exercise was also higher than in group L. Values for group N lay between those of groups E and L. The relationship of respiration rate to rectal temperature after exercise was greater in group L than in groups E and N. Physical fitness of groups E and N was inferior to that of group L.
29头猪（德国长白猪瘦肉型）被分别饲养在有限空间（每头0.48平方米；E组）、正常空间（每头1.2平方米；N组）或正常空间加每日运动（L组）中。在这些条件下饲养特定时间段后，让猪在以每秒1.1米速度移动的传送带上跑2公里。运动期间，E组猪的心率增加到每分钟275次，而L组仅为180次。L组的恢复脉搏率更高，心脏绝对重量和相对重量比E组小；运动后的直肠温度也比E组高。N组的值介于E组和L组之间。运动后L组呼吸频率与直肠温度的关系比E组和N组更大。E组和N组的身体素质不如L组。
