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| Number of Proceedings: 604 | 
	
		
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		| 501 | 
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			Marketing activities of sports figures on social networks and its consequences | 
		
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		Zahra  habibi kelachayeh* , Masoumeh  Kalateh Seifri, morteza  Dosti Pasha		 | 
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		| 502 | 
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			Identification and prioritizing of economic factors in the development of Esteghlal Football Club | 
		
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		Farzaneh  Hoseini* , morteza  Dousti, saeed  tabesh		 | 
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		| 503 | 
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			Systematic review of the effects of exercise during pregnancy on reducing the physiological consequences of Covid 19 | 
		
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		Masoumeh  Helalizadeh* 		 | 
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		| 504 | 
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			Analyzing the mascots of sport mega events (case study: summer and winter Olympics) | 
		
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		Mehdi  Rasooli* , پرستو  قدسی, Amir  Hashemifar		 | 
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		| 505 | 
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			Identifying the abstacles of kit sponsoring in Iran's football league (case study: uhlsport) | 
		
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		Mehdi  Rasooli* 		 | 
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		| 506 | 
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			Physical activity, positive or negative mood states and sociodemographic characteristics among team sport athletes during Covid-19 pandemic | 
		
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		Seyed Hojjat  Zamani Sani, Alireza  Aghababa* , Hadi  Rohani, مقصود  نبیل پور, زهرا  فتحی رضائی		 | 
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		| 507 | 
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			Prioritizing the recreational-sports needs of the elderly in District 2 of Tehran | 
		
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		Maryam  Aziziyani, Vahid  Baghaei, Zahra  Hosseini* 		 | 
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		| 508 | 
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			Analysis of factors affecting on controversy management occurring in sport (study on: Team Handball) | 
		
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		Matin  Najdsamiei* , Ali mohammad  Safania, salahedin  naghshbandi, abolfazl  farahani, reza  niekbakhsh		 | 
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		| 509 | 
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			THE EFFECTS OF PARTIAL SLEEP DEPRIVATION IN TWO CONSECUTIVE NIGHTS (48 HOURS) ON SHOOTING ACCURACY OF BASKETBALL PLAYERS | 
		
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		Kamran  Hosseinzadeh* , Pooya  Nekooei, sara  Majlesi, Paria  nekouei, behzad  alemi		 | 
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		| 510 | 
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			The hypolipidemic of ten weeks exercise training on dexamethasone-induced non-alcoholic liver fatty disease in male rats | 
		
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		maryam  ghazipour, Fathi  Rozita* , Khadijeh  nasiri, Abolfazl  Akbari		 | 
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		| 511 | 
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			Identifying the affecting factors on the Internet marketing mix development for sport organizations of Iran | 
		
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		Rasoul  Tarighi* , Fereshte  Shirdel Shahmiri		 | 
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		| 512 | 
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			The effect of electrical activity and information processing in the cerebral cortex on the electrical power of the brain between martial artists and passive individuals | 
		
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		zahra  asheghi* , neda  jadidi		 | 
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		| 513 | 
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			Effectiveness of Pilates Exercises on High School Girls Premenstrual Syndrome | 
		
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		Zahra  Mirzashaeri, Tahereh  Najafi Fard* 		 | 
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		| 514 | 
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			Effect of the quiet eye training on Function of shooters of pistol | 
		
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		Jaleh  BahramianDehkordi* , saleh  rafiee, Jaleh  Bagherli, sayedmohammadkazem  vaezmousavi, Gholamali  Mirzaeian		 | 
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		| 515 | 
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			The effect of 8 weeks low, moderate and high intensity continuous exercise training on sperm parameters in male wistar rats | 
		
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		Samaneh  Akbaregharebagh, Javad  Tolouei Azar* , Mazdak  Razi		 | 
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		| 516 | 
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			The effect of pescavus on plantar pressure distribution in professional physical theatre athletes during walking. | 
		
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		MINA  taghavikolahi* , raghad  Mimar, heidar  sadeghi		 | 
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		| 517 | 
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			Comparison of the effect of selected corrective protocol with and without vibration on neck and shoulder alignment in badminton players with shoulder and neck deformities | 
		
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		Seyed Amin  Saadatmand* 		 | 
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		| 518 | 
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			Comparison the effect of eight weeks of core stability training at a stable level and TRX on muscle endurance the core region, balance and jump-landing pattern of active women with trunk defects | 
		
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		Talaieh  Pourkazemi* , Hassan  Daneshmandi		 | 
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		| 519 | 
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			Analyzing Real Madrid FC Instagram posts | 
		
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		Parastoo  Ghodsi* 		 | 
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		| 520 | 
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			The effect of different footwear on biomechanical indicators in the lower extremity | 
		
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		alireza  nasri* , zahra  mahabadi		 | 
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		| 521 | 
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			Identifying the Mental Patterns of Experts from the Challenges Facing Iranian Sports leisure in the COVID-19 Crisis | 
		
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		محمد  کشتی دار* , Adel  Rahmanpour, سید مجید  حسینی, مرتضی  قناعت		 | 
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		| 522 | 
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			Determining the relationship between elasticity (range of motion) of the ankle and knee with the Quality of life of people with Visual impairment at the University of Tehran. | 
		
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		kamal  mohammadkhani* , Mohammad Hani  Mansori, Mohammad  Kirimizadeh Ardakani		 | 
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		| 523 | 
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			ACUTE EFFECT OF DISTAL TREATMENT MODALITY ON KNEE MECHANICAL WORK IN WOMEN WITH PATELLOFEMORAL PAIN SYNDROME DURING RUNNING | 
		
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		Mohammad  Ghorbani* , Fatemeh Salari-Esker1  Salari-Esker, Mansour  Eslami		 | 
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		| 524 | 
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			The Relationship Between Core Isometric endurance and Dynamic Balance in Soccer Players with Functional Ankle Instability | 
		
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		Hamed  Abbasi* , Mohammad Hossein  Alizadeh, Hassan  Daneshmandi, Amirhossein  Barati		 | 
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		| 525 | 
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			The effect of core muscle fatigue on squat kinematics in female Athletes | 
		
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		Mohammadreza  Seyedi* , Maryam  Torkaman, Fariba  Mohammadi		 | 
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