None listed
Conditions
Brief summary
Caffeine is a well-known ergogenic aid used by many athletes. It has been found that caffeine is beneficial in improving different elements of sports performance such as endurance performance, sprint performance and even vertical jump height. However, inconsistent results were found for caffeine and accuracy-based tasks in sports. In basketball, 3-point shooting accuracy is a key indicator to winning games. It is, therefore, valuable to identify interventions that will improve 3-point shooting performance in basketball games. We are asking you to take part in the present study as we want to identify whether caffeine will provide any benefits to improving 3-point shooting performance after completing an exercise protocol. You are considered one of those athletes. Thus, this investigational study is carried out to find out the effects of low-dose caffeine ingestion and timing on 3-point shooting accuracy in college basketball players. This study will also explore: (a) the effects of low-dose caffeine ingestion and timing on vertical jump height, sprint performance and completion timing of the exercise protocol, (b) effects of caffeine on heart rate, rate of perceived exertion, blood glucose, blood lactate, self-confidence, motivation, feeling, felt arousal and aggression, (c) relationship of heart rate, rate of perceived exertion, blood glucose, blood lactate, self-confidence, motivation, feeling, felt arousal and aggression with 3-point shooting performance in basketball.
Interventions
The entire duration of the study will last 3 weeks. Each participant will undertake 3 visits (trials) in a randomised, counterbalanced, crossover, controlled design. Each visit will be conducted on the same day over 3 weeks, e.g. Monday of Week 1 to 3. Thus, there will be a washout period of 7 days between visits. For each visit, 2 pills containing either caffeine or placebo will be provided before a standardised basketball simulation test and shooting protocol conducted over four quarters of 10
The entire duration of the study will last 3 weeks. Each participant will undertake 3 visits (trials) in a randomised, counterbalanced, crossover, controlled design. Each visit will be conducted on the same day over 3 weeks, e.g. Monday of Week 1 to 3. Thus, there will be a washout period of 7 days between visits. For each visit, 2 pills containing either caffeine or placebo will be provided before a standardised basketball simulation test and shooting protocol conducted over four quarters of 10 minutes. The ingestion of the first pill for each visit will be 75 minutes before the start of the basketball simulation test while the ingestion of the second pill for each visit will be 15 minutes prior to the basketball simulation test. The ingestion of the pills provided will be supervised by the investigators to ensure adherence to intervention. Timing of low-dose caffeine (3mg/kg body mass) with 3 visits: (a) placebo and placebo (b) caffeine and placebo (c) placebo and caffeine Drug: Caffeine (99% concentration) from BulkPowders, United Kingdom. Dose: 3mg/kg of body mass. Duration: For visits (b) and (c), administered once per visit. Mode of administration: opaque and unidentifiable oral capsules.
Sponsors
National Institute of Education, Nanyang Technological University
Study design
Allocation
Randomised controlled trial
Intervention model
Crossover
Primary purpose
Treatment
Masking
Blinded (masking used) (Subject, Caregiver)
Eligibility
Sex/Gender
Male
Age
21 Years to 30 Years
Healthy volunteers
Yes
Inclusion criteria
1) Male 2) Aged between 21 to 30 years old 3) Have no known caffeine allergy/intolerance 4) Competed in at least one university level basketball tournament or equivalent 5) Have at least 3 years of prior basketball experience in both training and competing 6) Have no health conditions diagnosed by a medical doctor preventing exercise participation 7) Not be taking any medications for chronic medical conditions 8) Have no self-reported medical conditions (e.g. hypertension, cardiovascular disease, insomnia and frequent migraines) 9) Consume between 0mg to 200mg of caffeine per day 10) Not be using any supplements that may have a physiological or psychological effect on the body (e.g. psychostimulant drugs, diuretic drugs or hormone containing supplements) 11) Be injury-free in the previous two months
Exclusion criteria
1) Any diagnosed form of cardiometabolic disease (CVD, diabetes, metabolic syndrome, hypertension) 2) Any symptoms that are contraindication of exercise testing (e.g. chest pains) 3) Any balance or dizziness problems 4) Any chronic medical conditions (and also whether it is medicated or not) 5) Any medical doctor diagnosed to contraindications to exercise 6) If you drink alcohol more than 3 times each week and more than 3 drinks each time 7) Any allergies or intolerance to caffeine 8) Failed to score less than 15% 3-point shooting accuracy during the familiarisation trial.
Outcome results
None listed