چکیده:
ﻫﺪف از اﻧﺠﺎم ﺗﺤﻘﯿﻖ ﺣﺎﺿﺮ، ﻣﻘﺎﯾﺴﻪ ﻋﻤﻠﮑﺮد ﭘﺮﺗﺎب آزاد ﺑﺴﮑﺘﺒﺎل در اﻓﺮاد دارای ﭼﺸﻢ و دﺳﺖ ﺑﺮﺗﺮ ﻫﻤﺴﻮ و دﮔﺮﺳﻮ ﺑﻮد. ﻫﻤﺴﻮﯾﯽ و دﮔﺮﺳﻮﯾﯽ ﭼﺸﻢ و دﺳﺖ ﺑﺮﺗﺮ ﯾﮑﯽ از ﻣﺘﻐﯿﺮﻫﺎی ﻣﻬﻢ در اﺟﺮای ﺣﺮﮐﺘﯽ ﻣﺤﺴﻮب ﻣﯽ ﺷﻮد. ﺗﺤﻘﯿﻘﺎت ﻣﺨﺘﻠﻒ ﻧﺸﺎن داده اﺳﺖ ﮐﻪ ﺑﯿﻦ ﻋﻤﻠﮑﺮد ﺑﺎزﯾﮑﻨﺎن ﻫﻤﺴﻮ و دﮔﺮﺳﻮ ﺗﻔﺎوت وﺟﻮد دارد ﮐﻪ ﻧﺎﺷﯽ از ﻋﻮاﻣﻞ اﺣﺘﻤﺎﻟﯽ ﻣﺨﺘﻠﻔﯽ ﻣﯽ ﺑﺎﺷﺪ و اﻟﺒﺘﻪ ﻧﺘﺎﯾﺞ ﻣﺘﻨﺎﻗﻀﯽ در ﭘﮋوﻫﺶ ﺳﺎﻟﻪ، ﺑﺮاﺳﺎس 18-24 داﻧﺸﺠﻮی 58 ﻫﺎی ﻣﺨﺘﻠﻒ ﺑﺪﺳﺖ آﻣﺪه اﺳﺖ. ﺑﺮای آزﻣﺎﯾﺶ ﺳﻮال ﺗﺤﻘﯿﻖ، ﭘﺴﺮ (در اﯾﻦ ﺗﺤﻘﯿﻖ 12 دﺧﺘﺮ و 16) ﭘﺴﺮ (و دﮔﺮﺳﻮ 15 دﺧﺘﺮ و 15) ﻫﻤﺴﻮﯾﯽ و دﮔﺮﺳﻮﯾﯽ ﭼﺸﻢ- دﺳﺖ در دو ﮔﺮوه ﻫﻤﺴﻮ ﺷﺮﮐﺖ ﮐﺮدﻧﺪ. ﻫﺮ ﮐﺪام از ﺷﺮﮐﺖ ﮐﻨﻨﺪه ﭘﺮﺗﺎب آزاد از ﻧﻘﻄﻪ ﭘﻨﺎﻟﺘﯽ ﺑﺴﮑﺘﺒﺎل اﺟﺮا ﮐﺮدﻧﺪ. ﻧﺘﺎﯾﺞ ﻧﻬﺎﯾﯽ ﻧﺸﺎن داد ﺑﯿﻦ 30 ﻫﺎ ﻋﻤﻠﮑﺮد ﭘﺮﺗﺎب دو ﮔﺮوه ﻫﻤﺴﻮ و دﮔﺮﺳﻮ اﺧﺘﻼف ﻣﻌﻨﺎداری وﺟﻮد دارد (. اﯾﻦ اﻣﮑﺎن وﺟﻮد دارد ﮐﻪ ﺑﺮﺗﺮی t=4. 072, P=0. 000) ﺑﺎزﯾﮑﻨﺎن ﻫﻤﺴﻮ ﺑﻪ دﻟﯿﻞ راﺳﺘﺎی دﯾﺪ ﻣﺴﺘﻘﯿﻢ ﺗﺮ آﻧﺎن و ﯾﺎ زﻣﯿﻨﻪ ﺑﯿﻨﺎﯾﯽ ﭘﯿﺶ روی آﻧﺎن ﺑﺎﺷﺪ. اﯾﻦ ﻧﺘﺎﯾﺞ ﺗﻔﺴﯿﺮﻫﺎی ﻣﻬﻤﯽ را ﺑﻪ ﻫﻤﺮاه دارد ﮐﻪ ﯾﮑﯽ از آﻧﻬﺎ، ﺟﺪاﺳﺎزی آﺛﺎر ﻣﻮﻗﺘﯽ اﺟﺮا و آﺛﺎر داﺋﻤﯽ ﯾﺎدﮔﯿﺮی ﺑﺎزﯾﮑﻨﺎن اﺳﺖ. ﺑﻪ ﻫﺮ ﺣﺎل ﺗﺤﻘﯿﻘﺎت ﺗﮑﻤﯿﻠﯽ ﻣﻮرد ﻧﯿﺎز اﺳﺖ ﺗﺎ دﻻﯾﻞ و اﺳﺎس اﺧﺘﻼف ﻣﯿﺎن ﺑﺎزﯾﮑﻨﺎن دارای ﭼﺸﻢ و دﺳﺖ ﺑﺮﺗﺮ ﻫﻤﺴﻮ و دﮔﺮﺳﻮ ﻣﺸﺨﺺ ﺷﻮد.
The purpose of this study was comparing the effect of ipsi lateral and contra lateral of eye-hand accuracy in free throw of basketball. Recent studies showed significant difference exist between motor performances of ipsilateral and contra lateral people. We compared the shooting performance of 30 ipsi lateral and 28 contra lateral dominant university students. The free throw shot in basketball was selected as an experimental task; each subject was allowed a total of 30 free throws. The results showed that there were statistically significant difference in free throw shooting accuracy between the ipsi lateral and contra lateral dominant subjects (t=4.072, P<0.0001). It is possible that the superiority of the players is more aligned with the line of vision ahead of them.This result has important interpretations one of them is eparating out the effects of temporary and permanent affects the players learning. However, further research is needed to distinguish the reasons of difference between the ipsi and contra lateral players