An interventional study of Caffeine plus Resistance training and Placebo + Resistance training in Caffeine and Resistance Training, sponsored by University of Alcala. Completed at 1 site in Spain. Open to participants aged 18 Years to 35 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-09-24.
Sponsored by University of Alcala · Not applicable, Interventional, and Other
Introduction: Several studies have evaluated and confirmed the ergogenic effect of acute caffeine intake on sports performance, specifically on strength and power performance. However, little is known about the prolonged effect of this supplement on neuromuscular adaptations to strength training.
Introduction: Several studies have evaluated and confirmed the ergogenic effect of acute caffeine intake on sports performance, specifically on strength and power performance. However, little is known about the prolonged effects of this supplement on neuromuscular adaptations to strength training.
Objectives: The present study aims to analyze the effects of acute and chronic caffeine intake on neuromuscular adaptations to strength training, according to sex (men vs. women) and type of exercise (bench press vs. squat), as well as on fatigue resistance during repeated sprints, fatigue perception, mood state, reaction time, diet, and potential side effects.
University of Alcala is the lead sponsor of 123 studies on the registry; 36 are open to participants now.
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Exclusion Criteria:
Dietary Supplement: Caffeine plus Resistance training
Other: Placebo + Resistance training
Dietary Supplement: Caffeine plus Resistance training
Other: Placebo + Resistance training
Acute caffeine intake (3 mg/kg) prior each resistance training session of a 8 weeks training program.
Acute placebo intake (3 mg/kg of maltodextrin) prior each resistance training session of a 8 weeks training program.
Mean velocity at different %1RM
Measuring bar mean velocity desplacement during bench press and back squat exercises.
Time frame: Through study completion, an average of 12 weeks
Peak velocity at different %1RM
Measuring bar peak velocity and time to reach peak velocity of bar desplacement during bench press and back squat exercises.
Time frame: Through study completion, an average of 12 weeks
Mean power output at different %1RM
Measuring during bench press and back squat exercises.
Time frame: Through study completion, an average of 12 weeks
Peak power output and time to reach peak power output at different %1RM
Measuring during bench press and back squat exercises.
Time frame: Through study completion, an average of 12 weeks
Number of repetitions performed at 65%1RM until task failure
In bench press and back squat exercises
Time frame: Through study completion, an average of 12 weeks
Bar velocity deplacement performed in 1 set at 65%1RM until task failure
In bench press and back squat exercises
Time frame: Through study completion, an average of 12 weeks
Power output generated in 1 set at 65%1RM until task failure
In bench press and back squat exercise
Time frame: Through study completion, an average of 12 weeks
Resting Metabolic Rate (RMR)
Kcal at rest using a metabolic chart.
Time frame: Through study completion, an average of 12 weeks
Maximal Fat Oxidation Rate (MFO)
g/min using a metabolic chart.
Time frame: Through study completion, an average of 12 weeks
Fat mass
Using electrical bioimpedance (kg and % of body mass)
Time frame: Through study completion, an average of 12 weeks
Fat-free mass
Using electrical bioimpedance (kg and % of body mass)
Time frame: Through study completion, an average of 12 weeks
Physical activity (METs-min/wk)
Using IPAQ
Time frame: Through study completion, an average of 12 weeks
Dietary (g/kg of macronutrients)
Using a 24-total recall
Time frame: Through study completion, an average of 12 weeks
Mood state
Mood. Participants graded a set of 29 items related to the mood on a Likert scale from 0 (not at all) to 4 (extremely) in reply to the question;How do you feel at this moment?; to assess six scales: tension, depression, anger, vigor, fatigue and confusion.
Time frame: Through study completion, an average of 12 weeks
Adverse effects
Adverse effects. perception of power, endurance, energy and exertion, as well as heart, muscular and gastrointestinal discomfort.
Time frame: Through study completion, an average of 12 weeks
Plan to share: Yes
No publications or documents are linked to this record.
This study is completed, as verified in Sep 2024. You cannot join it, but the record below documents what was studied.
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University of Alcala