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| Number of Proceedings: 604 | 
	
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		| 501 |  | Marketing activities of sports figures on social networks and its consequences | 
				|  | Zahra  habibi kelachayeh* , Masoumeh  Kalateh Seifri, morteza  Dosti Pasha | 
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		| 502 |  | Identification and prioritizing of economic factors in the development of Esteghlal Football Club | 
				|  | Farzaneh  Hoseini* , morteza  Dousti, saeed  tabesh | 
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		| 503 |  | Systematic review of the effects of exercise during pregnancy on reducing the physiological consequences of Covid 19 | 
				|  | Masoumeh  Helalizadeh* | 
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		| 504 |  | Analyzing the mascots of sport mega events (case study: summer and winter Olympics) | 
				|  | Mehdi  Rasooli* , پرستو  قدسی, Amir  Hashemifar | 
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		| 505 |  | Identifying the abstacles of kit sponsoring in Iran's football league (case study: uhlsport) | 
				|  | Mehdi  Rasooli* | 
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		| 506 |  | Physical activity, positive or negative mood states and sociodemographic characteristics among team sport athletes during Covid-19 pandemic | 
				|  | Seyed Hojjat  Zamani Sani, Alireza  Aghababa* , Hadi  Rohani, مقصود  نبیل پور, زهرا  فتحی رضائی | 
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		| 507 |  | Prioritizing the recreational-sports needs of the elderly in District 2 of Tehran | 
				|  | Maryam  Aziziyani, Vahid  Baghaei, Zahra  Hosseini* | 
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		| 508 |  | Analysis of factors affecting on controversy management occurring in sport (study on: Team Handball) | 
				|  | Matin  Najdsamiei* , Ali mohammad  Safania, salahedin  naghshbandi, abolfazl  farahani, reza  niekbakhsh | 
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		| 509 |  | THE EFFECTS OF PARTIAL SLEEP DEPRIVATION IN TWO CONSECUTIVE NIGHTS (48 HOURS) ON SHOOTING ACCURACY OF BASKETBALL PLAYERS | 
				|  | Kamran  Hosseinzadeh* , Pooya  Nekooei, sara  Majlesi, Paria  nekouei, behzad  alemi | 
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		| 510 |  | The hypolipidemic of ten weeks exercise training on dexamethasone-induced non-alcoholic liver fatty disease in male rats | 
				|  | maryam  ghazipour, Fathi  Rozita* , Khadijeh  nasiri, Abolfazl  Akbari | 
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		| 511 |  | Identifying the affecting factors on the Internet marketing mix development for sport organizations of Iran | 
				|  | Rasoul  Tarighi* , Fereshte  Shirdel Shahmiri | 
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		| 512 |  | 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 | 
				|  | zahra  asheghi* , neda  jadidi | 
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		| 513 |  | Effectiveness of Pilates Exercises on High School Girls Premenstrual Syndrome | 
				|  | Zahra  Mirzashaeri, Tahereh  Najafi Fard* | 
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		| 514 |  | Effect of the quiet eye training on Function of shooters of pistol | 
				|  | Jaleh  BahramianDehkordi* , saleh  rafiee, Jaleh  Bagherli, sayedmohammadkazem  vaezmousavi, Gholamali  Mirzaeian | 
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		| 515 |  | The effect of 8 weeks low, moderate and high intensity continuous exercise training on sperm parameters in male wistar rats | 
				|  | Samaneh  Akbaregharebagh, Javad  Tolouei Azar* , Mazdak  Razi | 
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		| 516 |  | The effect of pescavus on plantar pressure distribution in professional physical theatre athletes during walking. | 
				|  | MINA  taghavikolahi* , raghad  Mimar, heidar  sadeghi | 
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		| 517 |  | 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 | 
				|  | Seyed Amin  Saadatmand* | 
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		| 518 |  | 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 | 
				|  | Talaieh  Pourkazemi* , Hassan  Daneshmandi | 
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		| 519 |  | Analyzing Real Madrid FC Instagram posts | 
				|  | Parastoo  Ghodsi* | 
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		| 520 |  | The effect of different footwear on biomechanical indicators in the lower extremity | 
				|  | alireza  nasri* , zahra  mahabadi | 
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		| 521 |  | Identifying the Mental Patterns of Experts from the Challenges Facing Iranian Sports leisure in the COVID-19 Crisis | 
				|  | محمد  کشتی دار* , Adel  Rahmanpour, سید مجید  حسینی, مرتضی  قناعت | 
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		| 522 |  | 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. | 
				|  | kamal  mohammadkhani* , Mohammad Hani  Mansori, Mohammad  Kirimizadeh Ardakani | 
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		| 523 |  | ACUTE EFFECT OF DISTAL TREATMENT MODALITY ON KNEE MECHANICAL WORK IN WOMEN WITH PATELLOFEMORAL PAIN SYNDROME DURING RUNNING | 
				|  | Mohammad  Ghorbani* , Fatemeh Salari-Esker1  Salari-Esker, Mansour  Eslami | 
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		| 524 |  | The Relationship Between Core Isometric endurance and Dynamic Balance in Soccer Players with Functional Ankle Instability | 
				|  | Hamed  Abbasi* , Mohammad Hossein  Alizadeh, Hassan  Daneshmandi, Amirhossein  Barati | 
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		| 525 |  | The effect of core muscle fatigue on squat kinematics in female Athletes | 
				|  | Mohammadreza  Seyedi* , Maryam  Torkaman, Fariba  Mohammadi | 
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