Àΰ£Àº »ý¹°ÇÐÀûÀ¸·Î ½Ã¼Ó 64km±îÁö ´Þ¸± ¼ö ÀÖ´Ù´Â(be biologically capable of running at 64kilometers per hour) ¿¬±¸ °á°ú°¡ ³ª¿Ô´Ù.
´©°¡ µÆµç ¼¼°è¿¡¼ °¡Àå ºü¸£´Ù´Â ¿ì»çÀÎ º¼Æ®(29¡¤ÀÚ¸ÞÀÌÄ«)º¸´Ù ½Ã¼Ó 19km ÀÌ»ó ´õ ºü¸£°Ô(more than 19 kilometers quicker than the world¡®s fastest man Usain bolt) ´Þ¸± ¼ö ÀÖ´Ù´Â °ÍÀÌ´Ù.
¹Ì±¹ ¿ÍÀÌ¿À¹Ö´ëÇÐÀÇ »ýü¿ªÇÐ Àü¹®°¡(a biomechanics expert) ¸ÅÆ© ¹øµé ¹Ú»ç ¿¬±¸ÆÀÀº ¡¯ÀÀ¿ë »ý¸®ÇÐ Àú³Î¡®(the Journal of Applied Physiology)¿¡ ¹ßÇ¥ÇÑ ³í¹®¿¡¼ ¡°Àΰ£Àº ±ÙÀ°¼öÃà ½ºÇǵå(muscle contraction speeds)¸¦ ÀÌ¿ëÇØ ½Ã¼Ó 56~64kmÀÇ ´Þ¸®±â ¼Óµµ(running speeds of 56 to 64 kilometers per hour)¸¦ ³¾ ¼ö ÀÖ´Ù¡±°í ¹àÇû´Ù.
¸»ÇÏÀÚ¸é ¿Ã¸²ÇȰú ¼¼°è èÇǾð(the Olympic and world champion)ÀÎ 100m ¼¼°è±â·Ï(9ÃÊ58) º¸À¯ÀÚ(the world record holder in the 100 meter sprint) º¼Æ®°¡ 60m¿¡ µµ´ÞÇßÀ» ¶§ 6.67Ãʸ¸¿¡ 100m °á½Â¼±À» Åë°úÇÒ(cross the finishing line in a 100 meter sprint in 6.67 seconds) ¼ö ÀÖ´Ù´Â ¾ê±â´Ù.
¹øµé ¹Ú»ç ¿¬±¸ÆÀÀº ü³» ±ÙÀ°ÀÌ »ý¹°ÇÐÀûÀ¸·Î ¿òÁ÷ÀÏ ¼ö ÀÖ´Â °¡Àå ºü¸¥ ¼Óµµ¸¦ °è»êÇØ(by calculating the quickest rate at which muscles in the body can biologically move) ÃÖ´ëÇÑ °¡´ÉÇÑ ´Þ¸®±â ¼Óµµ¸¦ »êÃâ(calculate the ultimate possible running speed)ÇØºÃ´Ù.
°ú°Å ¿¬±¸µé¿¡¼´Â ¼Óµµ¸¦ ³»´Â µ¥ °¡Àå Å« Àå¾Ö(the main hindrance to speed)·Î ¶¥À» ¹ÚÂ÷°í ³ª°¥ ¶§ÀÇ Èû Áß ÀϺθ¸ ÆÈ´Ù¸®°¡ ÀÌ¿ëÇÒ ¼ö ÀÖ´Ù´Â(can onlu take a certain amount of force when they strike the ground) Á¡À» ÁöÀûÇØ¿Ô´Ù. ÇÏÁö¸¸ À̹ø ¿¬±¸¿¡¼´Â ±ÙÀ°¼öÃàÀÌ °ü°ÇÀ̶ó´Â(the contraction of our muscles hold the key) Á¡À» ¹àÇô³Â´Ù.
°ú°Å ¿¬±¸µé¿¡¼´Â ¼Óµµ¸¦ ³»´Â µ¥ °¡Àå Å« Àå¾Ö(the main hindrance to speed)·Î ¶¥À» ¹ÚÂ÷°í ³ª°¥ ¶§ÀÇ Èû Áß ÀϺθ¸ ÆÈ´Ù¸®°¡ ÀÌ¿ëÇÒ ¼ö ÀÖ´Ù´Â(can onlu take a certain amount of force when they strike the ground) Á¡À» ÁöÀûÇØ¿Ô´Ù. ÇÏÁö¸¸ À̹ø ¿¬±¸¿¡¼´Â ±ÙÀ°¼öÃàÀÌ °ü°ÇÀ̶ó´Â(the contraction of our muscles hold the key) Á¡À» ¹àÇô³Â´Ù.
¿¬±¸ÆÀÀº ¸Å ¹ß°ÉÀ½¿¡ ÀÇÇØ Áö¸é¿¡ °¡ÇØÁö´Â ÈûÀÇ Á¤È®ÇÑ Å©±â¸¦ ±â·ÏÇϱâ(record precise measurements of the forces applied to the surface with each footfall) À§ÇØ ½Ã¼Ó 64km ÀÌ»óÀÇ ¼Óµµ¸¦ ³¾ ¼ö ÀÖ´Â °í¼Ó ·¯´×¸Ó½ÅÀ» »ç¿ë(use a high-speed treadmill capable of attaining speeds greater than 64 kilometers per hour)Çß´Ù. ±×¸®°í Á¶»ç ´ë»óÀڵ鿡°Ô ¿©·¯ ÀÚ¼¼·Î ºü¸¥ ¼Óµµ·Î ´Þ¸®°Ô(have subjects¡¯ perform at high speeds in different gaits) Çß´Ù.
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±× °á°ú ÇÑ ´Ù¸®·Î ÃÖ°í ¼Óµµ·Î ¹ßÀ» ±¸¸¦ °æ¿ì ÁöÇ¥¸é¿¡ °¡ÇØÁö´Â Èû(the ground forces applied while hopping on one leg at top speed)Àº ÃÖ°í ¼Óµµ·Î ¾ÕÀ¸·Î ´Þ·Á³ª°¡´Â µµÁß¿¡ Àû¿ëµÇ´Â Èûº¸´Ù 30% ÀÌ»ó ´õ Å« °ÍÀ¸·Î(exceed those applied during top-speed forward running by 30 per cent or more) ³ªÅ¸³µ´Ù.
¶Ç Á¶»ç ´ë»óÀÚµé ´Ù¸® ³»ºÎÀÇ È°µ¿¼º ±ÙÀ°¿¡ ÀÇÇØ »ý¼ºµÇ´Â Èû(the forces generated by the active muscles within the limb)ÀÌ ÇÑ ´Ù¸®·Î ¹ßÀ» ±¸¸£´Â ÀÚ¼¼¿¡¼º¸´Ù ´ë·« 1.5~2¹è Å«(be roughly 1.5 to 2 times greater in the one-legged hopping gait by the subjects) °ÍÀ¸·Î Á¶»çµÆ´Ù.
ÀÌ °°Àº °á°ú´Â ´Þ¸®±â ¼ÓµµÀÇ ÇѰèÄ¡(running speed limits)°¡ ±ÙÀ°¼¶À¯ ÀÚüÀÇ ¼Óµµ ÇѰèÄ¡¿¡ µû¶ó °áÁ¤µÈ´Ù´Â(be set by the speed limits of the muscle fibers themselves) °ÍÀÓÀ» º¸¿©ÁÖ´Â °ÍÀÌ´Ù. ´Ù½Ã ¸»Çؼ ±ÙÀ°¼¶À¯ ½ºÇǵå´Â ´Þ¸®´Â »ç¶÷ÀÇ ´Ù¸®°¡ ¾ó¸¶³ª »¡¸® ÈûÀ» Áö¸é¿¡ °¡ÇØÁÙ ¼ö ÀÖ´À³Ä´Â ÇѰèÄ¡¸¦ Á¿ìÇÑ´Ù´Â(set the limit on how quickly the runner¡®s limb can apply force to the running surface) ¾ê±â´Ù.
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¿¤¸®Æ® ´Ü°Å¸® ¼±¼ö°¡ ¶Ù´Â °ÉÀ½¸¶´Ù ´Ù¸® Çϳª¿¡ 800~1000ÆÄ¿îµå(363~454kg)ÀÇ ÃÖ°í ÈûÀ» °¡ÇÒ ¼ö ÀÖÀ¸¸é(can apply peak forces of 800 to 1000 pounds with a single limb during each sprinting step) ÀÚ½ÅÀÇ ±ÙÀ° ¹× ´Ù¸®ÀÇ Èû ÇѰèÄ¡ ¶Ç´Â ±× ÇѰèÄ¡¿¡ °¡±î¿î ÈûÀ¸·Î ¶Ú´Ù°íµé(run at or near the force limits of his or her muscles and limbs) »ý°¢ÇÒ °ÍÀÌ´Ù.
±×·¯³ª »ç½ÇÀº ±×·¸Áö ¾Ê´Ù´Â °ÍÀÌ´Ù. ´Þ¸®´Â ÈûÀÌ ¾Æ¹«¸® Å©´Ù°í ÇÒÁö¶óµµ(despite how large the running forces canbe) »ý¹°ÇÐÀûÀ¸·Î³ª ÀÌ·ÐÀûÀ¸·Î º¸¸é Àΰ£ÀÇ ´Ù¸®´Â ÃÖ°í ¼Óµµ·Î ¾ÕÀ» ÇâÇØ ´Þ¸± ¶§ÀÇ Èûº¸´Ù ÈξÀ ´õ Å« ÁöÇ¥¸é ÈûÀ» °¡ÇÒ ¼ö ÀÖ´Ù´Â(be capable of applying much greater ground forces than those present during top-speed forward running) ¾ê±â´Ù.
µû¶ó¼ Àΰ£Àº 100m¸¦ ÇöÀçÀÇ ¼¼°è½Å±â·Ïº¸´Ù 2.91ÃÊ ´ÜÃàµÈ 6.67ÃÊ¿¡ ¶Û ¼ö ÀÖ´Ù´Â °ÍÀÌ ¹øµé ¹Ú»ç ¿¬±¸ÆÀÀÇ °á·ÐÀÌ´Ù.