#power output

1 article

A landscape editorial photograph with a modern, clean magazine feel, shot on a pale warm-gray concrete surface in soft natural window light from the left. In the foreground, two matte white ceramic espresso cups sit side by side. The left cup holds a small amount of dark espresso with golden crema. The right cup is filled twice as high. Beside them, two small stainless steel scoops hold fine coffee-colored powder, one half full and one heaped, suggesting a dose comparison without any text or labels. A pair of worn red leather boxing gloves rests slightly out of focus behind the cups, laces loosely draped, with a white hand wrap rolled neatly beside them. A minimalist digital kitchen scale in matte black sits at the edge of the frame, with a few roasted coffee beans scattered across the surface. In the soft-focus background, a boxing gym corner appears: a hanging heavy bag in muted charcoal, pale wood plank flooring, and a tall window with diffused morning light. The palette is warm cream, espresso brown, brick red, and soft slate gray, with gentle shadows and a shallow depth of field. The composition follows the rule of thirds, with the cups and scoops in the lower left third and open negative space on the right for headline overlay. The look is tactile and refined, like a high-end health and performance journal. It has natural grain, subtle contrast, and a calm, confident mood. There are no people, no text, no logos, and no futuristic elements.

Dubbel zo veel cafeïne hielp boksers nauwelijks — dit werkte wel

BY DR. GYMBRO · 27 okt 2026

Denk je dat een dubbele schep pre‑workout je prestaties automatisch verdubbelt? Een nieuwe crossover‑studie met 15 competitieve boksers vergeleek 3 mg/kg met 6 mg/kg cafeïne en toonde aan dat de hogere dosis niet consequent beter was. Beide dosissen verhoogden de spronghoogte en kracht na 60 minuten, maar 6 mg/kg leverde alleen bij enkele uitkomsten – zoals de ballistic push‑up en knie‑torque – een extra voorsprong. Hieronder vind je een mg‑per‑kg‑omrekening voor veelvoorkomende lichaamsgewichten, de door de data ondersteunde timing, en enkele kanttekeningen, onder meer dat er geen effect op daadwerkelijke stoten is getest.