Effects of sodium phosphate and caffeine ingestion on repeated-sprint ability in male athletes

Purpose: To examine the effects of acute caffeine supplementation on physical performance during fitness testing and activity during simulated games in basketball players. Methods: A double-blind, counterbalanced, randomized, crossover study design was followed. A total of 14 professional male basketball players ingested a placebo (sucrose) and caffeine (6 mg·kg−1 of body mass) in liquid form prior to completing 2 separate testing sessions. Each testing session involved completion of a standardized 15-minute warm-up followed by various fitness tests including 20-m sprints, countermovement jumps, Lane Agility Drill trials, and a repeated-sprint-ability test. Following a 20-minute recovery, players completed 3 × 7-minute 5-vs-5 simulated periods of full-court basketball games, each separated by 2 minutes of recovery. Local positioning system technology was used to measure player activity during games. Players completed a side-effects questionnaire 12 to 14 hours after testing. Results: Players experienced significant (P < .05), moderate–very large (effect size = −2.19 to 0.89) improvements in 20-m sprint, countermovement jump, Lane Agility Drill, and repeated-sprint-ability performance with caffeine supplementation. However, external workloads completed during simulated games demonstrated nonsignificant, trivial–small (effect size = −0.23 to 0.12) changes between conditions. In addition, players reported greater (P < .05) insomnia and urine output after caffeine ingestion. Conclusions: Acute caffeine supplementation could be effective to improve physical performance during tests stressing fitness elements important in basketball. However, acute caffeine supplementation appears to exert no meaningful effects on the activity completed during simulated basketball games and may promote sleep disturbances and exert a diuretic effect when taken at 6 mg·kg−1 of body mass in professional players.

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Repeated Sprint Ability Demands in U16 to U19 Highly Trained Handball Players Concerning Playing Position

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17165959 ◽

2020 ◽

Vol 17 (16) ◽

pp. 5959

Author(s):

Michal Starczewski ◽

Lech Borkowski ◽

Piotr Zmijewski

Keyword(s):

Anaerobic Capacity ◽

Cycle Ergometer ◽

Normative Values ◽

Relative Power ◽

Total Work ◽

Male Athletes ◽

Repeated Sprint Ability ◽

Repeated Sprint ◽

Selection Of ◽

Sprint Ability

The aim of the study was to determine anaerobic capacity and characterize changes in repeated sprint ability (RSA) within youth elite handball players. For this study, 142 male athletes (17.1 ± 0.9 years) were recruited from a handball sports high school and performed the RSA test on a cycle ergometer, including five 6 s all-out efforts separated by 24 s passive breaks. Maximal (Pmax) and mean (Pmean) power, highest (Wmax), and total work (Wtot) as well as power (Pdec) and work (Wdec) decrement were measured. Significant differences in RSA were noted in relation to age (greater values of Pmax, Pmean, Wtot, Wdec, and Pdec in U19 than U17 as well as greater values of Pmax, Wtot, Wmax, Wdec, and Pdec in U19 than U16 (p < 0.05)) and playing position (wing players had greater Wtot than pivot, 269 vs. 243 (J/kg) (p < 0.05), and wing players differed significantly in absolute and relative power from athletes of other positions). RSA depends on playing position and age in groups of youth handball players and the RSA test can be helpful in the selection of athletes for a playing position. The article introduces normative values for elite youth handball players, empowering coaches in the evaluation of anaerobic abilities and selection.

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Effects of sodium phosphate and caffeine loading on repeated-sprint ability

Journal of Sports Sciences ◽

10.1080/02640414.2015.1025235 ◽

2015 ◽

Vol 33 (19) ◽

pp. 1971-1979 ◽

Cited By ~ 8

Author(s):

Christopher Buck ◽

Kym Guelfi ◽

Brian Dawson ◽

Lars McNaughton ◽

Karen Wallman

Keyword(s):

Sodium Phosphate ◽

Repeated Sprint Ability ◽

Repeated Sprint ◽

Sprint Ability

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Effects of sodium phosphate and beetroot juice supplementation on repeated-sprint ability in females

European Journal of Applied Physiology ◽

10.1007/s00421-015-3201-1 ◽

2015 ◽

Vol 115 (10) ◽

pp. 2205-2213 ◽

Cited By ~ 13

Author(s):

Christopher L. Buck ◽

Timothy Henry ◽

Kym Guelfi ◽

Brian Dawson ◽

Lars R. McNaughton ◽

...

Keyword(s):

Sodium Phosphate ◽

Beetroot Juice ◽

Repeated Sprint Ability ◽

Repeated Sprint ◽

Sprint Ability

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A Meta-Analytical Comparison of the Effects of Small-Sided Games vs. Running-Based High-Intensity Interval Training on Soccer Players’ Repeated-Sprint Ability

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18052781 ◽

2021 ◽

Vol 18 (5) ◽

pp. 2781

Author(s):

Filipe Manuel Clemente ◽

Rodrigo Ramirez-Campillo ◽

José Afonso ◽

Hugo Sarmento ◽

Thomas Rosemann ◽

...

Keyword(s):

High Intensity ◽

Interval Training ◽

Soccer Players ◽

High Intensity Interval Training ◽

Training Interventions ◽

Repeated Sprint Ability ◽

Repeated Sprint ◽

Significant Difference ◽

High Intensity Interval ◽

Sprint Ability

This systematic review with a meta-analysis was conducted to compare the effects of small-sided games (SSGs)-based interventions with the effects of running-based high-intensity interval training (HIIT) interventions on soccer players’ repeated sprint ability (RSA). The data sources utilized were Web of Science, Scopus, SPORTDiscus, and PubMed. The study eligibility criteria were: (i) parallel studies (SSG-based programs vs. running-based HIIT) conducted in soccer players with no restrictions on age, sex, or competitive level; (ii) isolated intervention programs (i.e., only SSG vs. only running-based HIIT as individual forms) with no restrictions on duration; (iii) a pre–post outcome for RSA; (iv) original, full-text, peer-reviewed articles written in English. An electronic search yielded 513 articles, four of which were included in the present study. There was no significant difference between the effects of SSG-based and HIIT-based training interventions on RSA (effect size (ES) = 0.30; p = 0.181). The within-group analysis revealed no significant effect of SSG-based training interventions (ES = −0.23; p = 0.697) or HIIT-based training interventions (ES = 0.08; p = 0.899) on RSA. The meta-comparison revealed that neither SSGs nor HIIT-based interventions were effective in improving RSA in soccer players, and no differences were found between the two types of training. This suggests that complementary training may be performed to improve the effects of SSGs and HIIT. It also suggests that different forms of HIIT can be used because of the range of opportunities that such training affords.

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Relationship between Repeated Sprint Ability and Aerobic Capacity in Professional Soccer Players

The Scientific World JOURNAL ◽

10.1155/2013/952350 ◽

2013 ◽

Vol 2013 ◽

pp. 1-5 ◽

Cited By ~ 6

Author(s):

Rhys M. Jones ◽

Christian C. Cook ◽

Liam P. Kilduff ◽

Zoran Milanović ◽

Nic James ◽

...

Keyword(s):

Aerobic Capacity ◽

Significant Negative Correlation ◽

Soccer Players ◽

Active Recovery ◽

Maximal Aerobic Capacity ◽

Sprint Time ◽

Repeated Sprint Ability ◽

Professional Soccer ◽

Repeated Sprint ◽

Sprint Ability

Aim. The aim of the present study was to investigate the relationship between maximal aerobic capacity () and repeated sprint ability (RSA) in a group of professional soccer players.Methods. Forty-one professional soccer players (age yrs, height cm, weight kg) were required to perform tests to assess RSA and on two separate days with at least 48 hr rest between testing sessions. Each player performed a treadmill test to determine their and a test for RSA involving the players completing m sprints (turn after 20 m) with 20 s active recovery between each sprint.Results. There was a significant negative correlation between body mass normalised and mean sprint time () (; ) and total sprint time () (, ).Conclusion. Results of the current study indicate that is one important factor aiding soccer players in the recovery from repeated sprint type activities.

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

International Journal of Sport and Health Science ◽

10.5432/ijshs.201637 ◽

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

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

International Journal of Research in Pharmaceutical Sciences ◽

10.26452/ijrps.v10ispl1.1714 ◽

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.

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