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The Impact of Blade Technology on Paralympic Sprint Performance Between 1996 and 2016: Bilateral Amputees’ Competitive Advantage

Yetsa A. Tuakli-Wosornu, Xiang Li, Kimberly E. Ona Ayala, Yinfei Wu, Michael Amick, and David B. Frumberg

, revised classification rules saw sprinters with double- and single-leg amputation allocated into different sport classes (“T61–64”), in part due to observations that these two groups of athletes (i.e., those with unilateral lower limb amputation—T61, T62—vs. those with bilateral lower limb amputations—T63

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Effect of Combined Training With Balance, Strength, and Plyometrics on Physical Performance in Male Sprint Athletes With Intellectual Disabilities

Ghada Jouira, Haithem Rebai, Dan Iulian Alexe, and Sonia Sahli

focus on promoting sport participation for individuals with intellectual disabilities through organizations such as the Special Olympics and Paralympics ( Burns, 2018 ; Dijk et al., 2017 ). Track and field, particularly sprinting, stands out as a common discipline among individuals with intellectual

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Evaluating the Validity of Tests to Predict Sprint and Change of Direction Speed in Para-Athletes With Brain Impairments

Raul Reina, Emma M. Beckman, Mark J. Connick, Jemima G. Spathis, and Sean M. Tweedy

activity limitation tests and two criterion tests—(i) sprint performance and (ii) change of direction ability—in PABI; and (d) to compare the strength of association between the tests of activity limitation and sprint performance in PABI and NDR. Methods Experimental Approach to the Problem The activity

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Selected Kinematic Patterns of Visually Impaired Youth in Sprint Running

Robert W. Arnhold Jr. and Peter McGrain

The purpose of this study was to determine which set of selected kinematic variables affected the speed of visually impaired residential youth in the sprint run. The subjects were 27 students, 16 males and 11 females, between the ages of 9.4 and 16.4 years. Film data were collected during two trials of the 50-m dash. A Fortran computer program produced nine variables from these digitized data. A multiple regression analysis was performed on the variables using running speed as the dependent variable. Results of a correlation matrix yielded five variables with significant bivariate correlations to running speed. Results of a regression analysis indicated that the cycle length and hip joint range of motion had significant effects on running speed. Implications for an increase in sprinting speed include increasing stride length via the generation of greater hip extension during the drive phase and a greater hip flexion during the recovery phase of sprint running.

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Biomechanical Variables in Sprint Running of Athletes with Cerebral Palsy

Carol Pope, Claudine Sherrill, Jerry Wilkerson, and Jean Pyfer

This paper describes the sprint running of selected Class 6, 7, and 8 international-level athletes with cerebral palsy (CP), contrasts their biomechanical characteristics with those reported for nondisabled runners, and delineates discriminating biomechanical parameters among classes. Subjects included 17 male and female Class 6, 7, and 8 athletes with CP who competed in international competition and were finalists or semifinalists in sprint events. High speed films were taken, and data reduction was performed. It was concluded that (a) elite Class 6, 7, and 8 athletes with CP descriptively differ from findings reported in the nondisabled literature on variables of stride length, velocity, ratio of support to nonsupport time, time of forward swing, trunk angle, hip angle, angle of touchdown, and stride time (females only); (b) athletes with CP differ (right-side values only) between classes for hip range of motion, hip velocity, knee and elbow range of motion, and trunk angle average; and (c) distinguishing biomechanical characteristics exist between the more involved and noninvolved or less involved sides for hip velocity, angle of touchdown, and hip, knee, ankle, and shoulder range of motion.

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Power and Speed Differences Between Brazilian Paralympic Sprinters With Visual Impairment and Their Guides

Lucas Pereira, Ciro Winckler, Cesar C. Cal Abad, Ronaldo Kobal, Katia Kitamura, Amaury Veríssimo, Fabio Y. Nakamura, and Irineu Loturco

This study compared the physical performance of Paralympic sprinters with visual impairments (PSVI) and their guides in jump and sprint tests. Ten PSVI and guides executed squat jumps (SJ), countermovement jumps (CMJ), horizontal quintuple right/left-leg jumps (QR/QL), decuple jumps (DEC), and 50-m-sprint tests. The guides were superior to the PSVI in SJ (35.9 ± 6.3 vs 45.6 ± 3.2 cm), CMJ (38.5 ± 6.2 vs 46.7 ± 4.0 cm), QR (9.2 ± 1.9 vs 12.7 ± 1.0 m), QL (9.4 ± 1.9 vs 13.1 ± 0.8 m), DEC (21.0 ± 3.3 vs. 27.2 ± 1.7 m), and 50-m sprints (8.4 ± 0.4 vs 7.6 ± 0.5 m/s). The average differences between the PSVI and guides in the sprint tests was 10%, range 1–24%. Therefore, substantial differences in sprinting speed (in favor of the guides) between the peers were observed. Coaches should develop strategies to train the guides to improve their muscle-power performance.

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Sprint Performance of Elite Wheelchair Basketball Players: Applicability of a Laser System for Describing the Velocity Curve

Amelia Ferro, Jorge Villacieros, and Javier Pérez-Tejero

The purpose of this study was to develop a methodology to accurately analyze sprint performance of elite wheelchair basketball (WB) players in their own training context using a laser system and to analyze the velocity curve performed by the players regarding their functional classification and their playing position. Twelve WB players, from the Spanish men’s national team, took part in an oncourt 20-m-sprint test. BioLaserSport® was used to obtain time, mean velocities (Vm), maximum velocities (Vmax), and distances at 90%, 95%, and 98% of their Vmax. Vm and Vmax reached high values in Classes II and III and in the guard playing position. The protocol developed with the laser system makes it possible to obtain a precise velocity curve in short sprints and allows easy analysis of decisive kinematic performance variables in WB players, showing immediate feedback to coaches and players. The normalized data allow an interpretation of how much, where, and when Vmax occurs along the test.

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Neuromuscular Responses and Physiological Changes During Small-Sided Games in Wheelchair Basketball

Aitor Iturricastillo, Javier Yanci, and Cristina Granados

physical performance (i.e., change of direction ability [CODA], sprints, and sled towing) and physiological responses (i.e., blood lactate and tympanic temperature) during a high-intensity training task (SSG of 4 vs. 4) in WB players. Methods Participants Thirteen Spanish first division WB male players

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Relationship Between Power Output and Speed-Related Performance in Brazilian Wheelchair Basketball Players

Irineu Loturco, Michael R. McGuigan, Valter P. Reis, Sileno Santos, Javier Yanci, Lucas A. Pereira, and Ciro Winckler

only in speed tests ( Pereira et al., 2016 ) but also in sprint competitions ( Loturco, Winckler, et al., 2015 ). Notably, a recent study comparing Olympic and Paralympic judokas revealed that they present similar levels of strength in half-squat and bench press (BP) exercises but that power is

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Locomotor Adaptations During RaceRunning in People With Neurological Motor Disorders

Mohsen Shafizadeh, Nicola Theis, and Keith Davids

body size (Petra Cross Runner; Quest 88 Ltd., Shropshire, United Kingdom). Prior to the sprint trials, each participant performed a warm-up routine, which began with stretching exercises, followed by short walking and low-velocity running (10 m slow pace) with the bike. The coach supervised the warm