{
  "@context": "https://schema.org",
  "@graph": [
    {
      "@type": "Organization",
      "@id": "https://protein-fact.com/#organization",
      "name": "Protein Fact",
      "url": "https://protein-fact.com",
      "description": "プロテインに関する科学的事実を、論文・数値・製品スペックに基づいて解説する独立メディア。",
      "publishingPrinciples": "https://protein-fact.com/editorial-policy"
    },
    {
      "@type": "WebSite",
      "@id": "https://protein-fact.com/#website",
      "name": "Protein Fact",
      "url": "https://protein-fact.com",
      "publisher": {
        "@id": "https://protein-fact.com/#organization"
      },
      "inLanguage": "ja"
    },
    {
      "@type": "Article",
      "@id": "https://protein-fact.com/guides/protein-and-sleep#article",
      "headline": "プロテインは睡眠の質に影響するのか — トリプトファン・カゼイン・摂取タイミングの科学的根拠",
      "description": "プロテインに含まれるトリプトファンと睡眠の関係・就寝前摂取の影響・カゼインとホエイの違いを論文データに基づいて整理。就寝前30gカゼイン摂取の筋タンパク質合成効果と睡眠の質への影響も検証する。",
      "datePublished": "2026-03-20T00:00:00.000Z",
      "dateModified": "2026-03-20T00:00:00.000Z",
      "keywords": "プロテイン, 睡眠, トリプトファン, カゼイン, 就寝前",
      "publisher": {
        "@id": "https://protein-fact.com/#organization"
      },
      "mainEntityOfPage": {
        "@id": "https://protein-fact.com/guides/protein-and-sleep"
      },
      "isPartOf": {
        "@id": "https://protein-fact.com/#website"
      }
    },
    {
      "@type": "BreadcrumbList",
      "@id": "https://protein-fact.com/guides/protein-and-sleep#breadcrumb",
      "itemListElement": [
        {
          "@type": "ListItem",
          "position": 1,
          "name": "Protein Fact",
          "item": "https://protein-fact.com"
        },
        {
          "@type": "ListItem",
          "position": 2,
          "name": "ガイド・比較",
          "item": "https://protein-fact.com/guides"
        },
        {
          "@type": "ListItem",
          "position": 3,
          "name": "プロテインは睡眠の質に影響するのか — トリプトファン・カゼイン・摂取タイミングの科学的根拠"
        }
      ]
    }
  ]
}