ارﺗﺒﺎط ﺑﯿﻦ ﻣﺪت زﻣﺎن ﺷﺮﮐﺖ در ﻣﺴﺎﺑﻘﺎت ﺑﺎ ﻣﯿﺰان ﺑﺎﻟﯿﺪﮔﯽ، ﻇﺮﻓﯿﺖ ﻫﻮازي، ﺗﻮان ﺑﯽ ﻫﻮازي، ﺗﻮان اﻧﻔﺠﺎري، ﻫﻮرﻣﻮن رﺷﺪ و ﻓﺎﮐﺘﻮر ﺷﺒﻪ اﻧﺴﻮﻟﯿﻦ و ﻋﻮاﻣﻞ ﭘﯿﺶ ﺑﯿﻨﯽ ﮐﻨﻨﺪه ﻣﺪت زﻣﺎن ﺷﺮﮐﺖ در ﻣﺴﺎﺑﻘﺎت در ﺑﺎزﯾﮑﻨﺎن ﻓﻮﺗﺒﺎل ﻧﺨﺒﻪ زﯾﺮ 15 ﺳﺎل ﭘﺴﺮ

Relationship Between Duration of Competition with Maturity, Aerobic Capacity, Anaerobic Power, Explosive Power, Growth Hormone and Insulin-Like Factor and Predictors of Duration of Competition in Elite Football Players Under 15 Years Old Boy

ﺳﺎﺑﻘﻪ و ﻫﺪف: ﻫﺪف از اﯾﻦ ﻣﻄﺎﻟﻌﻪ ﺑﺮرﺳﯽ ﻣﯿﺰان ﻫﻤﺒﺴﺘﮕﯽ ﺑﯿﻦ ﻣﺪت زﻣﺎن ﺷﺮﮐﺖ در ﻣﺴﺎﺑﻘﺎت ﺑﺎ وﺿﻌﯿﺖ ﺑﺎﻟﯿﺪﮔﯽ، ﻗﺎﺑﻠﯿﺖﻫﺎي آﻣﺎدﮔﯽ ﺟﺴﻤﺎﻧﯽ، ﺳﻄﺢ ﻫﻮرﻣﻮﻧﯽ و ﺗﻮﺿﯿﺢ ﭼﮕﻮﻧﮕﯽ ﺗﺄﺛﯿﺮ اﯾﻦ ﻋﻮاﻣﻞ ﺑﺮ ﻣﺪت زﻣﺎن ﺷﺮﮐﺖ در ﻣﺴﺎﺑﻘﺎت ﺑﻮد. ﻣﻮاد و روﺷﻬﺎ: در ﭘﮋوﻫﺲ ﺣﺎﺿﺮ 30 ﺑﺎزﯾﮑﻦ ﻓﻮﺗﺒﺎل ﻧﺨﺒﻪ ﭘﺴﺮ زﯾﺮ 15 ﺳﺎل در ﻃﻮل ﻓﺼﻞ ﻣﺴﺎﺑﻘﺎت ﺑﺮاي ﺑﺮرﺳﯽ ﻣﯿﺰان ارﺗﺒﺎط ﺑﯿﻦ ﻣﺪت زﻣﺎن ﺷﺮﮐﺖ در ﻣﺴﺎﺑﻘﺎت ﺑﺎ ﺳﻦ اﺳﮑﻠﺘﯽ، اﮐﺴﯿﮋن ﻣﺼﺮﻓﯽ ﺑﯿﺸﯿﻨﻪ، ﺷﺎﺧﺺ ﺧﺴﺘﮕﯽ، آزﻣﻮن CMJ، ﻫﻮرﻣﻮن رﺷﺪ و ﻓﺎﮐﺘﻮر رﺷﺪ ﺷﺒﻪ اﻧﺴﻮﻟﯿﻦ ﺗﺤﺖ ﻧﻈﺮ ﻗﺮار ﮔﺮﻓﺘﻨﺪ و ﭘﺲ از ﭘﺎﯾﺎن ﻓﺼﻞ، ﻃﯽ 4 روز در آزﻣﻮنﻫﺎي آﻧﺘﺮوﭘﻮﻣﺘﺮﯾﮏ، وﺿﻌﯿﺖ ﺑﺎﻟﯿﺪﮔﯽ، ﺳﻄﺢ ﻫﻮرﻣﻮﻧﯽ و ﻗﺎﺑﻠﯿﺖﻫﺎي آﻣﺎدﮔﯽ ﺟﺴﻤﺎﻧﯽ ﻣﻮرد ارزﯾﺎﺑﯽ ﻗﺮار ﮔﺮﻓﺘﻨﺪ. ﯾﺎﻓﺘﻪﻫﺎ: ﻫﻮرﻣﻮن رﺷﺪ ﺑﺎ ﺣﺪاﮐﺜﺮ اﮐﺴﯿﮋن ﻣﺼﺮﻓﯽ )0/52=r( و ﭘﺮش ﻋﻤﻮدي )0/53=r( ﻫﻤﺒﺴﺘﮕﯽ ﺑﺎﻻﯾﯽ )0/01=P( داﺷﺖ ﺑﻪﻋﻼوه، ﺷﺎﺧﺺ ﺧﺴﺘﮕﯽ )0/44-=r( و ﻓﺎﮐﺘﻮر رﺷﺪ ﺷﺒﻪ اﻧﺴﻮﻟﯿﻦ )0/39=r( ﺑﺎ ﻣﺪت زﻣﺎن ﺷﺮﮐﺖ در ﻣﺴﺎﺑﻘﺎت ﻫﻤﺒﺴﺘﮕﯽ ﻣﺘﻮﺳﻂ )0/05=P( داﺷﺖ. ﺑﻌﺪ از اﻧﺠﺎم رﮔﺮﺳﯿﻮن ﺧﻄﯽ ﻣﺸﺨﺺ ﺷﺪ ﮐﻪ ﺷﺎﺧﺺ ﺧﺴﺘﮕﯽ )R2=0/19( و ﻓﺎﮐﺘﻮر رﺷﺪ ﺷﺒﻪ اﻧﺴﻮﻟﯿﻦ )R2=0/15( ﺑﻪ ﻃﻮر ﻣﻌﻨﺎداري )0/05=P( ﻗﺎﺑﻠﯿﺖ ﭘﯿﺶﺑﯿﻨﯽ ﻣﺪت زﻣﺎن ﺷﺮﮐﺖ در ﻣﺴﺎﺑﻘﺎت را دارﻧﺪ. ﻫﻤﭽﻨﯿﻦ رﮔﺮﺳﯿﻮن ﺧﻄﯽ ﭼﻨﺪﮔﺎﻧﻪ 49% از ﻣﺪت زﻣﺎن ﺷﺮﮐﺖ در ﻣﺴﺎﺑﻘﺎت را ﺗﻮﺿﯿﺢ داد. ﻧﺘﯿﺠﻪ ﮔﯿﺮي: ﻣﺘﻐﯿﺮﻫﺎي ﻣﺴﺘﻘﻞ ﺷﺎﺧﺺ ﺧﺴﺘﮕﯽ و ﻓﺎﮐﺘﻮر رﺷﺪ ﺷﺒﻪ-اﻧﺴﻮﻟﯿﻦ ﻗﺎدر ﺑﻪ ﺗﻌﯿﯿﻦ زﻣﺎن ﺷﺮﮐﺖ در ﻣﺴﺎﺑﻘﺎت ﺑﻮدﻧﺪ، و ﻫﻨﮕﺎم ورود ﻫﻤﻪ ﻣﺘﻐﯿﺮﻫﺎ، ﺑﻄﻮر ﻣﻌﻨﺎداري ﻣﺪل ﻣﺪت زﻣﺎن ﺷﺮﮐﺖ در ﻣﺴﺎﺑﻘﺎت ﺗﻮﺿﯿﺢ داده ﺷﺪ. ﺑﻨﺎﺑﺮاﯾﻦ، ﺑﻪ ﻧﻈﺮ ﻣﯽ رﺳﺪ ﻣﯿﺰان ﺑﺎﻟﯿﺪﮔﯽ، آﻣﺎدﮔﯽ ﺟﺴﻤﺎﻧﯽ و ﺳﻄﺢ ﻫﻮرﻣﻮﻧﯽ ﻧﻘﺶ ﺗﻌﯿﯿﻦ ﮐﻨﻨﺪهاي در ﺗﻮﺿﯿﺢ ﻣﺸﺎرﮐﺖ در ﻣﺴﺎﺑﻘﻪ در ﺑﺎزﯾﮑﻨﺎن ﻓﻮﺗﺒﺎل ﺟﻮاﻧﺎن را دارد

Background and Purpose: This study aimed to investigate the correlation between playing time in the matches with maturity status, physical fitness, hormone levels and to explain how these factors affect playing time in the matches. Methodology: In the present study 30 elite football players under 15 years old were monitored during the season to evaluate the relationship between playing time in the matches and skeletal age, VO2max, fatigue index, Counter Movement Jump, growth hormone, and IGF-1 and after the end of the season, they were evaluated in anthropometric tests, maturity status, hormonal level and physical fitness in 4 days. Results: Growth hormone had a high correlation (P=0.05) with VO2max (r = 0.52) and Counter Movement Jump (r = 0.53). In addition, fatigue index (r = -0.44) and IGF-1 (R=0.39) had moderate correlation (P = 0.05) with playing time in the matches. In linear regression, it was found that fatigue index (R2 = 0.19) and IGF-1 (R2 = 0.15) significantly (P= 0.05) could predict the playing time in the matches. Multiple linear regression also explained 49% of the playing time in the matches. Conclusion: Independent variables like fatigue index and IGF-1 were able to determine the game time, and when all variables were entered, the playing time model significantly was explained. Therefore, maturity, physical fitness, and hormonal levels seem to play a decisive role in explaining the time of participation in the matches in youth football players.