اﺛﺮ ﺣﺎد ﻓﻌﺎﻟﯿﺖ ورزﺷﯽ ﺗﻨﺎوﺑﯽ در آب ﻣﻌﺘﺪل، ﮔﺮم و ﺳﺮد ﺑﺮ ﺳﻄﻮح ﭘﻼﺳﻤﺎﯾﯽ ﮔﺮﻟﯿﻦ آﺳﯿﻞدار و ﭘﭙﺘﯿﺪ YY در زﻧﺎن ﺟﻮان داراي اﺿﺎﻓﻪوزن

Acute Effect of Interval Exercise in Temperate, Warm and Cold Water on Plasma Levels of Acylated Ghrelin and Peptide YY in Young Overweight Women

ﺳﺎﺑﻘﻪ و ﻫﺪف: ﻫﻨﮕﺎم اﻧﺠﺎم ﻓﻌﺎﻟﯿﺖ ورزﺷﯽ در دﻣﺎي ﻣﺤﯿﻄﯽ ﺑﺎﻻﺗﺮ و ﯾﺎ ﭘﺎﯾﯿﻦﺗﺮ از دﻣﺎي ﻃﺒﯿﻌﯽ ﺑﺪن، ﺣﻔﻆ دﻣﺎي ﻣﺮﮐﺰي ﺑﺪن ﻣﺴﺘﻠﺰم اﻓﺰاﯾﺶ ﻫﺰﯾﻨﻪ اﻧﺮژي اﺳـﺖ. ﻫﺪف از ﭘﮋوﻫﺶ ﺣﺎﺿﺮ ﺑﺮرﺳﯽ اﺛﺮ ﺣﺎد ﻓﻌﺎﻟﯿﺖ ورزﺷﯽ ﺗﻨﺎوﺑﯽ در آب ﻣﻌﺘﺪل، ﮔﺮم و ﺳﺮد ﺑﺮ ﺳﻄﻮح ﭘﻼﺳﻤﺎﯾﯽ ﮔﺮﻟﯿﻦ آﺳﯿﻞدار و ﭘﭙﺘﯿﺪ YY ﺑﻮد. ﻣﻮاد و روشﻫﺎ: در اﯾﻦ ﭘﮋوﻫﺶ ﻧﯿﻤﻪ ﺗﺠﺮﺑﯽ، 13 زن ﺟﻮان داراي اﺿـﺎﻓﻪ وزن ﺑﻪ ﺻـﻮرت ﺗﺼـﺎدﻓﯽ اﻧﺘﺨﺎب ﺷــﺪﻧﺪ و ﺳﻪ ﺟﻠﺴﻪ ﻓﻌﺎﻟﯿﺖ ورزﺷـﯽ ﺗﻨﺎوﺑﯽ ﺑﻪ ﻣﺪت 40 دﻗﯿﻘﻪ ﺑﺎ ﺷـﺪت ﺗﻘﺮﯾﺒﯽ 65 درﺻﺪ ﺣﺪاﮐﺜﺮ اﮐﺴﯿﮋن ﻣﺼﺮﻓﯽ در ﻫﺮ ﺟﻠﺴﻪ را در ﺳﻪ روز ﺟﺪاﮔﺎﻧﻪ در آب ﻣﻌﺘﺪل، ﮔﺮم و ﺳـﺮد (ﺑﻪ ﺗﺮﺗﯿﺐ در دﻣﺎي 37/5 ،24-25- 36/5 و 16/5-17/5 درﺟﻪ ﺳـﺎﻧﺘﯽ ﮔﺮاد) اﻧﺠﺎم دادﻧﺪ. ﻧﻤﻮﻧﻪﮔﯿﺮي ﺧﻮن، ﻗﺒﻞ و ﺑﻼﻓﺎﺻﻠﻪ ﭘﺲ از ﻫﺮ ﺟﻠﺴﻪ اﻧﺠﺎم ﮔﺮﻓﺖ. ﯾﺎﻓﺘﻪﻫﺎ: ﺳـﻄﺢ ﮔﺮﻟﯿﻦ آﺳـﯿﻞ دار ﻣﺘﻌﺎﻗﺐ ﻓﻌﺎﻟﯿﺖ در آب ﻣﻌﺘﺪل، ﮔﺮم و ﺳﺮد ﮐﺎﻫﺶ ﻣﻌﻨﺎداري ﯾﺎﻓﺖ (0/05≤P). ﻫﻤﭽﻨﯿﻦ ﮐﺎﻫﺶ ﻣﻌﻨﺎدار ﺳﻄﺢ اﯾﻦ ﭘﭙﺘﯿﺪ ﻣﺘﻌﺎﻗﺐ ﻓﻌﺎﻟﯿﺖ در آب ﺳﺮد ﻧﺴﺒﺖ ﺑﻪ آب ﮔﺮم ﻣﺸﺎﻫﺪه ﺷﺪ (0/05=P)، اﻣﺎ ﺑﯿﻦ آب ﻣﻌﺘﺪل- ﮔﺮم و آب ﻣﻌﺘﺪل-ﺳﺮد ﺗﻔﺎوت ﻣﻌﻨﺎدار ﻧﺒﻮد (0/05>P). ﺳﻄﺢ ﭘﭙﺘﯿﺪ YY ﻧﯿﺰ ﻣﺘﻌﺎﻗﺐ ﻓﻌﺎﻟﯿﺖ در آب ﻣﻌﺘﺪل، ﮔﺮم و ﺳﺮد اﻓﺰاﯾﺶ ﻣﻌﻨﺎداري ﯾﺎﻓﺖ (0/05≤P) و اﯾﻦ اﻓﺰاﯾﺶ در آب ﺳﺮد ﻧﺴﺒﺖ ﺑﻪ آب ﻣﻌﺘﺪل ﺑﺎﻻﺗﺮ ﺑﻮد (0/04=P)، اﻣﺎ ﺑﯿﻦ آب ﺳﺮد- ﮔﺮم و ﻣﻌﺘﺪل-ﮔﺮم ﺗﻔﺎوت ﻣﻌﻨﺎدار ﻧﺒﻮد (0/05>P). ﻧﺘﯿﺠﻪﮔﯿﺮي: ﺑﻪ ﻧﻈﺮ ﻣﯽرﺳــﺪ اﻧﺠﺎم ﻓﻌﺎﻟﯿﺖ ورزﺷــﯽ در آب )ﻣﺴــﺘﻘﻞ از درﺟﻪ ﺣﺮارت آب( ﺑﻪﺗﺮﺗﯿﺐ ﺑﻪواﺳــﻄﻪ ﮐﺎﻫﺶ و اﻓﺰاﯾﺶ ﺳــﻄﺢ ﻫﻮرﻣﻮنﻫﺎي اﺷـﺘﻬﺎ آور و ﺿﺪ اﺷﺘﻬﺎ ﻣﻨﺠﺮ ﺑﻪ ﮐﺎﻫﺶ اﺷﺘﻬﺎ ﭘﺲ از ﻓﻌﺎﻟﯿﺖ ورزﺷﯽ ﻣﯽ ﺷﻮد، اﻣﺎ از آنﺟﺎ ﮐﻪ داﻣﻨﻪ اﯾﻦ ﺗﻐﯿﯿﺮات در آب ﺳﺮد ﺑﯿﺶﺗﺮ ﺑﻮد، اﻧﺘﻈﺎر ﻣﯽرود ﮐﻪ اﺛﺮات ﺿﺪ اﺷﺘﻬﺎﯾﯽ ﻓﻌﺎﻟﯿﺖ در آب ﺳﺮد ﺷﺪﯾﺪﺗﺮ ﺑﺎﺷﺪ.

Background& Purpose: Maintenance of the core temperature requires additional energy for thermoregulation during and after exercise if environmental temperatures are outside the thermoneutral zone, either below (cold) or above (warmth/heat). The purpose of this study was to investigate the acute effect of interval exercise in temperate, warm and cold water on plasma levels of acylated ghrelin (AG) and peptide YY. Methodology: In this quasi-experimental study, 13 overweight young women were selected randomly and performed three sessions interval exercise at ~65% of VO2max for 40min in temperate, warm and cold water (24-25, 36.5-37.5 and 16.5-17.5° C respectively) on three separate days. Blood sampling was done before and after each session. Results: The AG level decreased significantly after exercise in temperate, warm and cold water (P≤0.05). This peptide level also decreased significantly in cold water compared to warm water (P=0.05), but there was no significant difference between temperate-warm and temperate-cold water (P>0.05). The level of peptide YY increased significantly in temperate, warm and cold water (P≤0.05), and this increase higher than in cold water compared to temperate water (P=0.04), but there was no significant between clod-warm water and temperate-warm water. Conclusions: It seem that exercise in water (independent of water temperature), due to decrease and increase the levels of appetite and anti-appetite hormones respectively, result in decrease appetite after exercise, but since the range of these changes was higher in cold water, it is expected that anti-appetite effects of exercise be more severe in cold water.