نتایج جستجو برای: professional sports

تعداد نتایج: 151185  

صاحب‌الزمانی, منصور, شجاع‌الدین, سیّد صدرالدین , مهرابیان, حسین ,

 Background and Objectives : Physical activities have been recently recommended for the prevention of some chronic diseases such as osteoarthritis. However, the detrimental effects of severe physical activity on musculoskeletal system of athletes are still under debate. The current study aimed to compare the following parameters between retired professional athletes and non-athletic persons rad...

Journal: :Public health reports 2010
Kathleen M Lenk Traci L Toomey Darin J Erickson Gunna R Kilian Toben F Nelson Lindsey E A Fabian

OBJECTIVE Alcohol-related problems such as assaults and drinking-driving at or near professional sporting events are commonly reported in the media. An important strategy to reduce such problems may be the use of alcohol control policies at sports stadiums. The objective of this study was to examine alcohol control policies and practices at professional sports stadiums in the U.S. METHODS We ...

Journal: :British journal of sports medicine 2000
J L Chicharro J Hoyos A Lucía

OBJECTIVES To evaluate the changes produced in both the isocapnic buffering and hypocapnic hyperventilation (HHV) phases of professional cyclists (n = 11) in response to endurance training, and to compare the results with those of amateur cyclists (n = 11). METHODS Each professional cyclist performed three laboratory exercise tests to exhaustion during the active rest (autumn: November), prec...

2000
Dennis Coates Brad R. Humphreys

The NBA lockout of 1998-1999 resulted in the cancellation of a significant number of games. According to the claims made by proponents of sports-driven economic growth, cities with NBA franchises should experience significant negative economic losses from this work stoppage because of the lost spending in and around basketball arenas during this event. Although it will be several years before a...

2012
J.E.J. Bekkers Th.S. de Windt M. Brittberg D.B.F. Saris

The prevalence of focal articular cartilage lesions among athletes is higher than in the general population. Treatment goals differ considerably between the professional and recreational athlete. High financial stakes and the short duration of a professional career influence the treatment selection for the professional athlete, while such parameters weigh differently in recreational sports. Thi...

Background. Educational sport is one of the best tools to fashion motivational forces with respect to sports, which leads to desirable results in sports activities. Today, the path to success in elite and professional sports passes through the attention to educational sports. Objectives. Due to the importance of educational sports, this study aimed to study the challenges of educational sports...

2017

This paper develops a model of a professional sports league with network externalities by integrating the theory of two-sided markets into a two-stage contest model. In professional team sports, the competition of the clubs functions as a platform that enables sponsors to interact with fans. In these club-mediated interactions, positive network effects operate from the fan market to the sponsor...

Journal: :British journal of sports medicine 2013
A Mehran Mostafavifar Thomas M Best Greg D Myer

SPORT SPECIALISATION: FRIEND OR FOE? Sports participation is increasing in the USA (US population 313 million inhabitants) and in Icelandic (population 320 thousand inhabitants) adolescents, it is estimated that 35–45 million youth 6–18 years of age participate in some form of organised or recreational athletics. 2 However, sports specialisation including year-round sport-specific training, par...

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