Hop Tests and the Functional Athletic Performance of American Football Players

Abstract Objective: Hop tests have well-known benefits when evaluating the rehabilitation process after sports injuries. However, utilization of hop tests to evaluate functional athletic performance of healthy athletes is currently uncertain and is not common in clinical practice. This study aimed to investigate the relationships between hop performance, their symmetries and functional test performance in American …

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Assessing the Act of Tackling in American Football

Tackling is a fundamental defensive move in American football, with the main purpose of stopping the forward motion of the ball-carrier. However, current tackling metrics are manually recorded outcomes that are inherently flawed due to their discrete and subjective nature. Using player tracking data, we present a novel framework for assessing tackling contribution in a …

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Positional Movement Demands during NFL Football Games

Abstract: Understanding the in-game demands placed on athletes may allow practitioners to design improved training protocols to prepare athletes for competitive demands. This study aimed to quantify the competitive movement demands of professional American football athletes and to determine any inter-positional differences that may exist. Player tracking data were collected from 2018 to 2020 regular …

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An Apparent Achilles Heel of the NFL: Have Achilles Tendon Injuries Significantly Increased to Unacceptably High Incidence Levels in the NFL and if so, why?

Abstract: Many if not most of us watched in utter disbelief and horror last September 11th as Aaron Rogers, the newly acquired $75 million dollar quarterback with the New York Jets just 4 snaps into the new season, suffered an Achilles Tendon ruptures (ATR) in his inaugural game on nationally televised Monday Night Football with …

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The importance of a Properly Fit Football Helmet

Abstract Background:  Properly fitted equipment remains a critical element in reducing the risk of concussion in American football.Objective: To assess helmet fitting characteristics and contributing risk factors for improper fit in a sample of youth American football athletes.Design:  Cross-sectional studySetting: University-sanctioned youth football campParticipants: Data were collected for 69 youth football athletes aged 8–14 years in June 2023.Interventions: Parents/guardians answered questions …

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Factors Affecting the Speed of the Tennis Serve

Abstract: In tennis, the serve plays a key role in determining the success of a player. The speed of a serve is influenced by a multitude of interconnected skills and abilities. The objective of this study was to establish the correlation between the explosive strength of the throwing type, the grip strength and flexibility of …

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Preventing Exertional Heat Stroke in Football: Time for a Paradigm Shift

Abstract: Among American sports, football has the highest incidence of exertional heat stroke (EHS), despite decades of prevention strategies. Based on recent reports, 100% of high school and college EHS football fatalities occur during conditioning sessions. Linemen are the at-risk population, constituting 97% of football EHS deaths. Linemen heat up faster and cool down slower …

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Effects of Plyometric Jump Training on Repeat Sprint Ability in Athletes

Background: There is a growing body of research examining the effects of plyometric jump training (PJT) on repeated sprint ability (RSA) in athletes. However, available studies produced conflicting findings and the literature has not yet been systematically reviewed. Therefore, the effects of PJT on RSA indices remain unclear.Objective:  To explore the effects of PJT on RSA in …

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Joint-Angle Specific Strength Adaptations Influence Improvements in Power in Highly Trained Athlete

Abstract Purpose. The purpose of this study was to examine the influence of training at different ranges of motion during the squat exercise on joint-angle specific strength adaptations. Methods. Twenty eight men were randomly assigned to one of three training groups, differing only in the depth of squats (quarter squat, half squat, and full squat) performed in 16-week …

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Effectiveness of Repeated Sprint Ability (RSA) Development in Youth Soccer Players

Abstract: This research aimed at finding out the effectiveness of a 6-week training program aimed at developing repeated sprint ability (RSA) of U19 soccer players. The experimental group consisted of elite youth soccer players (n = 14) in the club of the Slovak First league U19. Three different tests were used to obtain data: Bangsbo …

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