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クレアチンはトレーニング前に取るべき？それとも後に取るべき？小規模研究が示す「トレーニング後」の優位性
nutrition

クレアチンはトレーニング前に取るべき？それとも後に取るべき？小規模研究が示す「トレーニング後」の優位性

BY DR. GYMBRO ·

トレーニング前にクレアチンを摂るべきか、後に摂るべきかはジムで最もよくある質問のひとつです。2013年に *Journal of the International Society of Sports Nutrition* に掲載された、19名の男性ボディビルダーを対象とした研究では、トレーニング後に摂取した方がやや有利と示されましたが、有意差は認められませんでした。本稿では、データが示す実態やサンプルサイズが結果に与える影響、5 gというシンプルな毎日摂取法への応用を解説します。
A landscape, editorial-style flat lay photographed from above on a pale oak gym bench or a matte light-gray concrete surface. On the left side, a clear glass of water sits next to a small matte white ceramic bowl of fine white creatine powder, with a wooden scoop resting beside it and a few loose grains scattered naturally on the surface. In the center, a modern analog wall-style clock face is replaced by a simple minimalist stopwatch in brushed steel, its hands paused, subtly suggesting timing without any text or numbers emphasized. On the right, a neatly folded charcoal gym towel and a single chalk-dusted dumbbell handle enter the frame at the edge, with a faint dusting of white chalk on the wood. A small linen notebook with a pencil rests slightly off-center, its pages blank, hinting at data and study without any readable writing. The color palette is soft and restrained: warm cream, oatmeal, sage green, and muted slate, with one accent of terracotta orange in the pencil or a small ceramic dish. Light comes from a large window at the upper left, casting long, gentle diagonal shadows and a soft highlight across the glass of water, creating delicate caustic reflections on the surface. The depth of field is shallow, with the creatine bowl and scoop in crisp focus and the edges softly blurred. The composition leaves generous negative space on the upper right for a headline overlay. The overall feel is calm, clean, and contemporary, like a wellness and science journal's cover image, with natural textures, subtle film grain, and a refined, premium magazine look. No people, no logos, no text, and no futuristic elements.
general

クレアチンはトレーニング前に摂るべきか、後に摂るべきか？ 小規模研究は後者にやや有利と示す

BY DR. GYMBRO ·

クレアチンはトレーニング前に摂るべきか、後に摂るべきか迷いますよね。2013年に行われた19人の男性ボディビルダーを対象とした研究では、トレーニング後の摂取が除脂肪量・脂肪量・ベンチプレスにおいてわずかに優れる結果が出ました。ただし、正式な統計検定では有意差が認められず、著者は「もしかしたら有益かもしれない」と慎重に結論付けています。この記事ではデータの実際の意味、サンプルサイズが重要な理由、そして1日5 gのシンプルな摂取法への応用方法を解説します。
A wide, editorial-style still life photographed on a pale limestone countertop in soft morning window light. At the center sits a matte white scoop of fine white powder resting beside a frosted glass tumbler of cloudy, pale pink-orange water, with a few watermelon slices and a halved wedge showing glossy coral flesh and thin green rind, a nod to citrulline's natural source. To the left, a neatly folded charcoal gym towel and a brushed steel dumbbell rest at the edge of the frame, slightly out of focus. To the right, a minimalist open notebook with a few hand-drawn tally marks and a simple line graph sketched in black ink rises toward the right edge, next to a slim mechanical pencil and a small analog stopwatch with a clean white face. A few loose grains of powder are scattered across the stone, catching the light. Soft diagonal shadows fall across the surface from a nearby window, and a gentle sage-green wall in the background adds calm contrast. The palette is warm cream, watermelon coral, sage green, and soft graphite gray, with plenty of negative space on the upper left for headline overlay. Shallow depth of field, crisp focus on the powder scoop and watermelon, subtle film grain, natural tones, and a clean, modern wellness-journal aesthetic. Shot at eye level with a slight downward angle, like a contemporary health and science magazine cover. No text, no logos, no people.
general

8 gのシトルリンマレートでレップ数が53％増、筋肉痛が40％減？研究結果から分かること

BY DR. GYMBRO ·

2010年に行われたクロスオーバー試験では、シトルリンマレート8 gの摂取によりベンチプレスの最終セットで約53％多くレップが可能となり、トレーニング後24時間・48時間の筋肉痛が約40％軽減されたと報告されています。ただし、レップ増はセッション後半、疲労が蓄積したときに顕著でした。胃部不快感は約14.6％の参加者で見られ、対象が男性のみでベンチプレスに限られていた点にも留意が必要です。これらの結果を踏まえ、適切な用量とタイミングでの活用方法を検討しましょう。
A wide editorial still life on a pale, warm-gray stone surface lit by soft morning window light from the left. In the foreground, a rustic ceramic bowl in matte oatmeal glaze holds dried ashwagandha roots, pale tan and gnarled, with a few scattered beside it. A small wooden scoop dusted with fine golden-beige powder rests next to the bowl. Behind them, a few olive-green ashwagandha sprigs with small orange-red berries in papery husks arc across the frame, adding a quiet pop of color. Midground right: a matte black chalk-dusted dumbbell handle and a single brushed-steel weight plate lean casually against a linen-textured backdrop in muted sage. A folded cream cotton towel and a slim notebook with a pencil suggest a training log. The notebook is open to blank, softly lined pages with no legible text. The background fades into a gentle blur of neutral beige and soft terracotta tones, with a hint of a plant shadow cast across the wall in dappled light. Fine dust and powder particles float in the light beams, giving a tactile, organic feel. The composition follows the rule of thirds: botanical elements on the left and center, gym elements on the right, and negative space in the upper right for headline overlay. Shallow depth of field, crisp focus on the roots and powder, creamy bokeh behind. Color palette: sage green, warm sand, terracotta, charcoal black, and a touch of burnt orange. The mood is calm, modern, and trustworthy, like a premium wellness and science magazine. Photographed on a 50mm lens, natural grain, subtle film-like contrast, clean minimalist styling, high-end editorial photography.
general

8週間の筋トレ実験でプラセボに勝った古代ハーブ（アシュワガンダ）：筋力・筋肥大・テストステロン

BY DR. GYMBRO ·

何世紀にもわたりアーユルヴェーダで利用されてきた根が、プラセボ効果を上回る結果を示したのでしょうか？57人の初心者男性を対象にした8週間の無作為化比較試験で、アシュワガンダ抽出物を1日300 mg、1日2回摂取した群は、ベンチプレスの筋力、腕と胸囲のサイズ、テストステロンの上昇がプラセボ群より大きく、体脂肪も減少しました。ただし、対象が初心者男性に限られ、試験期間も短く、サンプルサイズも小さい点は留意が必要です。データの内容、投与方法、対象者、そして懐疑的な姿勢を保つべき理由を解説します。
A wide, editorial flat-lay photograph shot from directly above on a pale warm-gray stone countertop, lit by soft natural morning window light with gentle diagonal shadows. On the left, a neatly arranged cluster of whole-food protein sources: two seared chicken breast slices with a golden crust, a small ceramic bowl of creamy Greek yogurt topped with blueberries, three halved soft-boiled eggs with jammy orange yolks, a handful of raw almonds, and a small pile of dried lentils scattered on a linen napkin. At the center, a matte white shaker bottle and a wooden scoop resting in a pile of fine vanilla-colored protein powder, a few grains dusted artfully across the surface. On the right, a minimalist kitchen scale in matte black displaying a portion of food, next to an open notebook with a hand-drawn curve that rises steeply and then flattens into a plateau, drawn in a deep terracotta ink pen, with a small dot marking the bend. A brass pen lies beside the notebook. A single dumbbell with a brushed steel finish sits partially in frame at the upper right corner, grounding the fitness theme without feeling gym-like. Color palette: warm cream, sage green, terracotta, soft charcoal, and butter yellow accents, with generous negative space along the top edge for title overlay. Shallow depth of field, crisp textures, subtle film grain, modern lifestyle magazine aesthetic, clean and calm composition, 16:9 landscape.
general

実際に筋肉を最大化できるタンパク質量はどれくらい？ 1.6 g/kg のプラトーを解説

BY DR. GYMBRO ·

1ポンド（約0.45 kg）あたり2 g以上のタンパク質が必要だと考えていませんか？49件の試験・1,863名の成人を対象としたメタ分析では、筋肉増強効果が体重1 kgあたり1.6 gで頭打ちになることが示されました。95％信頼区間の上限は約2.2 g/kg で、無制限に大量摂取すれば必ずしも効果が上がるわけではない実用的な範囲が示されています。トレーニング経験が豊富な人ほどサプリの効果が大きく、年齢が上がると効果はやや減少します。以下で、食事やプロテインシェイク、予算面での具体的な意味を見ていきましょう。

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