0
selected
-
1.
Sodium Bicarbonate Supplementation Delays Neuromuscular Fatigue Without Changes in Performance Outcomes During a Basketball Match Simulation Protocol.
Ansdell, P, Dekerle, J
Journal of strength and conditioning research. 2020;(5):1369-1375
Abstract
Ansdell, P and Dekerle, J. Sodium bicarbonate supplementation delays neuromuscular fatigue without changes in performance outcomes during a basketball match simulation protocol. J Strength Cond Res 34(5): 1369-1375, 2020-To investigate the development of neuromuscular fatigue during a basketball game simulation and to ascertain whether sodium bicarbonate (NaHCO3) supplementation attenuates any neuromuscular fatigue that persists. Ten participants ingested 0.2 g·kg of NaHCO3 (or an equimolar placebo dosage of sodium chloride [NaCl]) 90 and 60 minutes before commencing a basketball game simulation (ALK-T vs. PLA-T). Maximal voluntary isometric contractions (MVICs) of the knee extensors and potentiated high- (100 Hz) and low- (10 Hz) frequency doublet twitches were recorded before and after each match quarter for both trials. In addition, 15-m sprint times and layup completion (%) were recorded during each quarter. Maximal voluntary isometric contraction, 100- and 10-Hz twitch forces declined progressively in both trials (p ≤ 0.05) with a less pronounced decrease in MVIC during ALK-T (p < 0.01). Both 100- and 10-Hz twitch forces were also significantly greater in ALK-T (p ≤ 0.05). Fifteen-meter sprint time increased over the course of both trials (∼2%, p < 0.01); however, no significant condition or time effect was found for layup completion (p > 0.05). A basketball simulation protocol induces a substantial amount of neuromuscular (reduction in knee extensor MVICs) and peripheral fatigue with a concomitant increase in 15-m sprint time over the protocol. NaHCO3 supplementation attenuated the rate of fatigue development by protecting contractile elements of the muscle fibers. This study provides coaches with information about the magnitude of fatigue induced by a simulated basketball game and provides evidence of the efficacy of NaHCO3 in attenuating fatigue.
-
2.
Does Acute Beetroot Juice Supplementation Improve Neuromuscular Performance and Match Activity in Young Basketball Players? A Randomized, Placebo-Controlled Study.
López-Samanes, Á, Gómez Parra, A, Moreno-Pérez, V, Courel-Ibáñez, J
Nutrients. 2020;(1)
Abstract
Whereas beetroot juice (BJ) supplementation is shown to increase physical performance in endurance activities, its benefits in team sports has been barely studied. In this randomized placebo-controlled study, we investigated the effects of BJ acute supplementation in improving neuromuscular performance and physical match activity in basketball. Ten young male competitive basketball players aged 15-16 years received 140 mL of BJ or placebo (PLA) on two separated days in a balanced cross-over design. Testing sessions comprised a neuromuscular test battery consisting of a countermovement jump (CMJ), isometric handgrip strength, 10-m/20-m sprint and agility T-test, followed by a 40-minute simulated basketball match. Physical match activity (distances, speeds, accelerations, and decelerations) was monitored using an inertial tracking system (Wimu ProTM) Results revealed no significant effects of BJ on CMJ (p = 0.304, ES = 0.13), isometric handgrip strength (p = 0.777, ES = 0.06), 10-m (p = 0.820, ES = 0.10), and 20-m sprint (p = 0.540, ES = 0.13), agility T-test (p = 0.979, ES ≤ 0.01) and any physical match demands (p > 0.151, ES = 0.13-0.48). Acute moderate doses of BJ (12.8 mmol of NO3-) was not effective in improving neuromuscular performance (jump height, isometric handgrip strength, sprint, and agility) or physical match requirements in young trained basketball players the day of the competition.
-
3.
The Effects of Cholecalciferol Supplementation on Vitamin D Status Among a Diverse Population of Collegiate Basketball Athletes: A Quasi-Experimental Trial.
Sekel, NM, Gallo, S, Fields, J, Jagim, AR, Wagner, T, Jones, MT
Nutrients. 2020;(2)
Abstract
Vitamin D may play a role in performance and injury risk, yet the required supplementation dosage for collegiate athletes is unclear. The objective of this study was to define the dosage of vitamin D3 supplementation required to beneficially affect serum 25-hydroxyvitamin D (25(OH)D) among a sample of collegiate basketball athletes. This was a quasi-experimental trial, participants were allocated to one of three groups of vitamin D3 daily at the beginning of pre-season training and dependent upon their baseline vitamin D status as follows: insufficient (<75 nmol/L) to 10,000 IU, sufficient (75-125 nmol/L) to 5000 IU and optimal (>125 nmol/L) to no supplementation. Follow-up assessments were completed ~ 5 months later in post season. The majority (n = 13) were allocated to 10,000 IU vs. n = 5 to 5000 IU and n = 2 to no supplementation. The 10,000 IU group showed the greatest change (35.0 ± 27.0 nmol/L) vs. the 5000 IU group (-9.3 ± 9.6 nmol/L) and no supplementation group (-41.6 ± 11.7 nmol/L, p < 0.01). Only 1 participant reached optimal status in the 10,000 IU group. In conclusion, a daily dosage of 10,000 IU vitamin D3 supplementation mitigated the high prevalence of vitamin D deficiency among collegiate basketball players but was insufficient for all to reach sufficient levels.
-
4.
Caffeine Supplementation Has No Effect on Dribbling Speed in Elite Basketball Players.
Scanlan, AT, Dalbo, VJ, Conte, D, Stojanović, E, Stojiljković, N, Stanković, R, Antić, V, Milanović, Z
International journal of sports physiology and performance. 2019;(7):997-1000
Abstract
PURPOSE To examine the effect of caffeine supplementation on dribbling speed in elite female and male basketball players. METHODS A double-blind, counterbalanced, randomized, crossover design was utilized. Elite basketball players (n = 21; female, n = 10; male, n = 11; age = 18.3 ± 3.3 yr) completed placebo (3 mg·kg-1 of body mass of dextrose) and caffeine (3 mg·kg-1 of body mass) trials 1 week apart during the in-season phase. During each trial, players completed 20-m linear sprints with and without dribbling a basketball. Performance times were recorded at 5-m, 10-m, and 20-m splits. Dribbling speed was measured using traditional (total performance time) and novel (Dribble Deficit) methods. Dribble Deficit isolates the added time taken to complete a task when dribbling compared to a non-dribbling version of the same task. Comparisons between placebo and caffeine conditions were conducted at group and individual levels. RESULTS Non-significant (P > 0.05), trivial-small (effect size = 0.04-0.42) differences in dribbling speed were observed between conditions. The majority (20 out of 21) of players were classified as non-responders to caffeine, with 1 player identified as a negative responder using Dribble Deficit measures. CONCLUSIONS Results indicate caffeine offers no ergogenic benefit to dribbling speed in elite basketball players. The negative response to caffeine in one player indicates caffeine supplementation may be detrimental to dribbling speed in specific cases and emphasizes the need for individualized analyses in nutrition-based sport science research.
-
5.
Evidence-based post-exercise recovery strategies in basketball.
Calleja-González, J, Terrados, N, Mielgo-Ayuso, J, Delextrat, A, Jukic, I, Vaquera, A, Torres, L, Schelling, X, Stojanovic, M, Ostojic, SM
The Physician and sportsmedicine. 2016;(1):74-8
Abstract
Basketball can be described as a moderate-to-long duration exercise including repeated bouts of high-intensity activity interspersed with periods of low to moderate active recovery or passive rest. A match is characterized by repeated explosive activities, such as sprints, jumps, shuffles and rapid changes in direction. In top-level modern basketball, players are frequently required to play consecutive matches with limited time to recover. To ensure adequate recovery after any basketball activity (i.e., match or training), it is necessary to know the type of fatigue induced and, if possible, its underlying mechanisms. Despite limited scientific evidence to support their effectiveness in facilitating optimal recovery, certain recovery strategies are commonly utilized in basketball. It is particularly important to optimize recovery because players spend a much greater proportion of their time recovering than they do in training. Therefore, the main aim of this report is to facilitate useful information that may lead to practical application, based on the scientific evidence and applied knowledge specifically in basketball.
-
6.
[NUTRITIONAL STATUS BY ANTHROPOMETRIC AND BIOCHEMICAL PARAMETERS OF COLLEGE BASKETBALL PLAYERS].
Godoy-Cumillaf, AE, Cárcamo-Araneda, CR, Hermosilla-Rodríguez, FP, Oyarzún-Ruiz, JP, Viveros-Herrera, JF
Nutricion hospitalaria. 2015;(6):2828-31
Abstract
INTRODUCTION in relation to the student population, their class schedules, hours of study, budget shortages, among others, do not allow them to have good eating habits and sedentary ago. Within this context are the sports teams, which must deal with the above. OBJECTIVE knowing the nutritional status of a group of college basketball players (BU) by anthropometric and biochemical parameters. METHODS the research provides a non-experimental, descriptive, transversal, with a quantitative approach The sample was selected on a non-probabilistic approach. which included 12 players design. Anthropometric parameters for body mass index (BMI), somatotype and body composition was assessed. For biochemical glucose, triglycerides and cholesterol. RESULTS have a BMI of 24.6 (kg/m2), are classified as endomesomorfas (5,5-4,3-1,2) have a fat mass 39.9% and 37.8% of muscle mass, glucose values are 68.7 (mg/dl), triglycerides 128 (mg/dl) and 189 cholesterol (mg/dl). CONCLUSION the BU have normal values for BMI and biochemical parameters, but dig deeper greater amount of adipose tissue is found as reported by body composition and somatotype, a situation that could be related to poor eating habits, however is required further study to reach a categorical conclusion.