scholarly journals The Relationship between Aerobic Fitness and Change in Repeated Sprint Ability before and after a Half-time

2017 ◽  
Vol 15 (0) ◽  
pp. 104-110
Author(s):  
Natsumi Kinoshita ◽  
Fuminori Takayama ◽  
Yoshiharu Nabekura
Keyword(s):  
Aerobic Fitness ◽  
Half Time ◽  
Repeated Sprint Ability ◽  
Repeated Sprint ◽  
Before And After ◽  
The Relationship ◽  
Sprint Ability

scholarly journals Repeated sprint ability (RSA) performance is not related to body height and body weight measurements among perak sukma 2018 male rugby players

2019 ◽  
Vol 10 (SPL1) ◽  
Author(s):  
Nor Fazila Abd Malek ◽  
Nur Ikhwan Mohamad ◽  
Mohansundar Sankaravel2 ◽  
Sakinah Mohd Hassan
Keyword(s):  
Body Weight ◽  
Pearson Correlation ◽  
Body Height ◽  
Anthropometric Measures ◽  
Actual Performance ◽  
Repeated Sprint Ability ◽  
Repeated Sprint ◽  
The Relationship ◽  
Rugby Players ◽  
Sprint Ability

Repeated sprint ability (RSA) is typically used for speed-endurance and agility-endurance training and assessment. RSA is preferred as it mimics actual performance during competition. RSA test involves straight sprint and quick turning movements. Thus, the aim of this study is to determine the relationship between height and body weight measurements on RSA performance, as height and weight may influence the mechanical properties of it. Ten male rugby players (body weight 72.99 ± 14.29 kg, height 169 ± 5.55 cm) selected for Perak SUKMA 2018 team were assessed during centralized training ~9 months prior to their competition.  Body weight and height were measured using standard laboratory weight and height scales prior to the RSA test. RSA were hand-timed for 5 repetitions x 2 sets x 60 seconds rest in between repetitions x 5 minutes rest in-between set. The sprints were performed in the evenings, on grass surface with participants wearing full playing attire. Standardized pre-game warm-up and cooling down were performed. Data recorded was analyzed statistically using a t-test comparison for set one versus set two performances. Pearson correlation coefficient was used to analyze the relationship between anthropometric measures and the RSA test. RSA performance has a negative correlation with the athletes’ height (r= -0.233 set 1, r = -0.435 set 2) and body weight (r= -0.556 set 1, r= -0.629 set 2). RSA performance was significantly different between set 1 and set 2 (p=0.001), with set 1 performance better than set 2. Body height and body weight did not influence RSA performance. Athletes involved did not have adequate speed-agility-endurance needed. In practical, selecting athletes based on their body height and body weight with the assumption that taller and heavier athletes may perform better may not be suitable for this kind of sport. On the other hand, using RSA to test and develop the speed-agility-endurance ability for rugby players is suggested.  

Velocity and Power–Load Association of Bench-Press Exercise in Wheelchair Basketball Players and their Relationships With Field-Test Performance

2019 ◽  
Vol 14 (7) ◽  
pp. 880-886 ◽  
Author(s):  
Aitor Iturricastillo ◽  
Cristina Granados ◽  
Raúl Reina ◽  
José Manuel Sarabia ◽  
Ander Romarate ◽  
...  
Keyword(s):  
Inverse Relationship ◽  
Bench Press ◽  
Wheelchair Basketball ◽  
Basketball Players ◽  
Ability Test ◽  
Change Of Direction ◽  
Repeated Sprint Ability ◽  
Repeated Sprint ◽  
The Relationship ◽  
Sprint Ability

Purpose: To analyze the relationship between mean propulsive velocity (MPV) of the bar and relative load (percentage of the 1-repetition maximum [%1RM]) in the bench-press (BP) exercise and to determine the relationship of power variables (ie, mean concentric power [MP], mean propulsive power [MPP], and peak power [PP]) in change-of-direction ability, linear sprint, and repeated-sprint ability. Methods: A total of 9 Spanish First Division wheelchair basketball players participated in the study. All participants performed an isoinertial BP test in free execution mode, a 505 change-of-direction ability test, linear sprint test (20 m), and repeated-sprint ability test. Results: A nearly perfect and inverse relationship was observed for the BP exercise between the %1RM and MPV (r = −.97, R2 = .945, P < .001). The maximum loads for MP, MPP, and PP were obtained between 48.1% and 59.4% of the 1RM. However, no significant correlations were observed between strength and wheelchair performance. Conclusions: Wheelchair basketball players with different functional impairments showed a nearly perfect and inverse relationship for the BP exercise between the %1RM and MPV; thus the MPV could be used to estimate the %1RM. This finding has important practical applications for velocity-based resistance training in that coaches would be able to prescribe and monitor training load. Conversely, the absence of association between BP performance and field tests might be due to other factors such as the wheelchair–user interface, trunk-muscle activity, or propulsion technique, apart from strength variables.

The Relationship Between Short- and Long-Distance Swimming Performance and Repeated Sprint Ability

2012 ◽  
Vol 26 (12) ◽  
pp. 3426-3431 ◽  
Author(s):  
Yoav Meckel ◽  
David J. Bishop ◽  
Moran Rabinovich ◽  
Leonid Kaufman ◽  
Dan Nemet ◽  
...  
Keyword(s):  
Swimming Performance ◽  
Long Distance ◽  
Repeated Sprint Ability ◽  
Repeated Sprint ◽  
The Relationship ◽  
Sprint Ability

Repeated-Sprint Ability and Aerobic Fitness

2011 ◽  
Vol 25 (10) ◽  
pp. 2857-2865 ◽  
Author(s):  
Nicolas Thébault ◽  
Luc A Léger ◽  
Philippe Passelergue
Keyword(s):  
Aerobic Fitness ◽  
Repeated Sprint Ability ◽  
Repeated Sprint ◽  
Sprint Ability

scholarly journals Six weeks of β-alanine supplementation did not enhance repeated-sprint ability or technical performances in young elite basketball players

2017 ◽  
Vol 23 (2) ◽  
pp. 111-118 ◽  
Author(s):  
Fabio Milioni ◽  
Paulo E Redkva ◽  
Fabio A Barbieri ◽  
Alessandro M Zagatto
Keyword(s):  
Recovery Period ◽  
Basketball Players ◽  
Group Interactions ◽  
Repeated Sprint Ability ◽  
Repeated Sprint ◽  
Supplementation Period ◽  
Before And After ◽  
Mean Time ◽  
Test Level ◽  
Sprint Ability

Supplementation with β-alanine plays an important role as a precursor of carnosine, the most effective intramuscular buffer, and has been seen as a potential ergogenic aid, especially for high-intensity modalities such as basketball. Thus, the aim of the present study was to investigate the effects of 6 weeks of β-alanine supplementation on repeated sprint ability (RSA) and technical performances in young elite Brazilian basketball players. In total, 27 young basketball players (17±1 years) were randomized into a β-alanine group (Gβ – 6.4 g day−1 of β-alanine) and a placebo group (GP – 6.4 g day−1 of dextrose). Before and after the supplementation period the athletes performed a RSA test composed of ten 30 m sprints with two 180° changes of direction interspaced by 30 s of recovery. During the recovery period (i.e., after the sprints) the athletes performed a countermovement jump (CMJ) and a set of three free throws. After 48 h they performed a Yo-Yo intermittent recovery test level 1 (Yo-Yo IR1). Both groups increased the distance covered in the Yo-Yo IR1 after the supplementation period ( p = 0.001). On the other hand, both groups presented impairment in RSA time-performance (total time, best time, and mean time, p ≤ 0.04), while no significant changes were observed for technical task performances (i.e., CMJ and free throws) ( p ≥ 0.07). No between-group interactions were observed for any variable measured ( p ≥ 0.31). Thus, 6 weeks of β-alanine supplementation did not improve RSA or technical performances in young elite basketball players.

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