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Coffee Better Stimulant Than Caffeine
Study
The researchers got nine trained male students to do a simple two-sets to failure bench press workout on different occasions.
On one occasion the subjects drank two cups of coffee an hour before starting their workout [COF]. The students consumed 0.15 g instant coffee per kg bodyweight. That provided them with 5 mg caffeine per kg bodyweight.
On another occasion the subjects drank two cups of decaffeinated instant coffee an hour before starting their workout [DEC]. The students consumed 0.15 g decaffeinated instant coffee per kg bodyweight.
On yet another occasion the subjects drank two cups of decaffeinated instant coffee an hour before starting their workout, and took caffeine pills as well [D+C]. The students consumed 0.15 g decaffeinated instant coffee and 5 mg caffeine per kg bodyweight.
On another occasion the students just took caffeine pills an hour before doing their strength training [CAF]. They then consumed 5 mg caffeine per kg bodyweight.
Finally, the students were given a placebo on one occasion an hour before the workout. [PLA]
Results
The subjects managed more reps when they did squats after drinking ordinary coffee, or decaffeinated coffee plus caffeine than when they had been given a placebo, caffeine pills or decaffeinated coffee. Apparently coffee contains more stimulants than just caffeine - or possibly substances that reinforce the stimulatory effect of caffeine.
Conclusion
"The practical implications of the present study are that the ingestion of caffeinated coffee, providing 5 mg•kg-1 of caffeine (approximately two large cups i.e. 300 ml per cup) prior to resistance exercise, can enhance performance", the researchers wrote.
"Further research should be conducted to observe if enhancements in performance can be procured from a lower dose of caffeine from coffee, for example 3 mg•kg-1, which would be a more practical amount of coffee to drink (approximately 1 large cup i.e. 300 ml)."
Source:
J Strength Cond Res. 2016 Feb 12.
The researchers got nine trained male students to do a simple two-sets to failure bench press workout on different occasions.
On one occasion the subjects drank two cups of coffee an hour before starting their workout [COF]. The students consumed 0.15 g instant coffee per kg bodyweight. That provided them with 5 mg caffeine per kg bodyweight.
On another occasion the subjects drank two cups of decaffeinated instant coffee an hour before starting their workout [DEC]. The students consumed 0.15 g decaffeinated instant coffee per kg bodyweight.
On yet another occasion the subjects drank two cups of decaffeinated instant coffee an hour before starting their workout, and took caffeine pills as well [D+C]. The students consumed 0.15 g decaffeinated instant coffee and 5 mg caffeine per kg bodyweight.
On another occasion the students just took caffeine pills an hour before doing their strength training [CAF]. They then consumed 5 mg caffeine per kg bodyweight.
Finally, the students were given a placebo on one occasion an hour before the workout. [PLA]
Results
The subjects managed more reps when they did squats after drinking ordinary coffee, or decaffeinated coffee plus caffeine than when they had been given a placebo, caffeine pills or decaffeinated coffee. Apparently coffee contains more stimulants than just caffeine - or possibly substances that reinforce the stimulatory effect of caffeine.
Conclusion
"The practical implications of the present study are that the ingestion of caffeinated coffee, providing 5 mg•kg-1 of caffeine (approximately two large cups i.e. 300 ml per cup) prior to resistance exercise, can enhance performance", the researchers wrote.
"Further research should be conducted to observe if enhancements in performance can be procured from a lower dose of caffeine from coffee, for example 3 mg•kg-1, which would be a more practical amount of coffee to drink (approximately 1 large cup i.e. 300 ml)."
Source:
J Strength Cond Res. 2016 Feb 12.
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