Thus, it remains unclear whether gum containing low-dose caffeine (3 mg/kg) also enhances maximal strength and muscular endurance.
It seems odd to say that a dose of 3 mg of caffeine for every kg of body weight is a "low dose," especially given that caffeine in chewing-gum form is absorbed rapidly. A 180-pound man weighs 81.6 kg, and for him, the authors' "low dose" is nearly 245 mg of caffeine. That's roughly the equivalent of a small ("tall") cup of Starbucks coffee.