Dr. Gymbro
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#cardiovascular health

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A sunlit, minimalist kitchen counter in a modern home, photographed from a slightly elevated three-quarter angle with soft natural morning light spilling in from a window on the left. In the center sits a matte white ceramic mug of black coffee with a thin curl of steam, beside a small glass jar of deep magenta beetroot powder with a wooden scoop resting on the lid. A scattering of fine crimson powder dusts the pale oak surface in an artful, casual swirl. Nearby, a halved raw beetroot reveals vivid concentric rings of purple and pink, next to a few roasted coffee beans and a neatly folded charcoal gym towel. In the soft-focus background, a pair of clean white running shoes and a stainless steel water bottle sit on a floating shelf, hinting at a pre-workout routine. A single sprig of green beet leaves adds a fresh accent.

The color palette is warm and editorial: creamy neutrals, espresso browns, and rich beet magenta, with gentle highlights and long soft shadows. The composition has generous negative space on the right side for headline text, shallow depth of field, and a crisp, tactile texture on the ceramic, powder, and wood grain. The mood is calm, health-conscious, and contemporary, like a lifestyle feature in a premium wellness magazine or a trendy nutrition journal. Clean, balanced, natural, with subtle film-like grain and a slightly muted, high-end finish.
science research

プレワークアウトのカフェインで動脈が硬くなる―ビートルートパウダーで相殺

BY DR. GYMBRO ·

ランダム化クロスオーバー試験により、プレワークアウト用にカフェイン(6 mg/kg)を摂取すると、2.5 時間後に動脈硬さの指標が上昇することが明らかになりました。一方、硝酸塩を 400 mg 含むビートルートパウダーを同時に摂ると、その上昇はプラセボと同等のレベルに戻ります。血圧や血管内皮機能には変化が見られなかったため、深刻なリスクというよりは微細な影響と考えられます。本研究は健康な若年成人 24 名を対象とした単回投与の短期試験で、長期使用や高齢者・高血圧患者への影響はまだ不明です。カフェインに頼っている人は、結果を踏まえてどのように考えるべきかをご紹介します。

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