{"id":466,"date":"2026-08-28T06:56:05","date_gmt":"2026-08-28T06:56:05","guid":{"rendered":"https:\/\/nhdbio.com\/ibutamoren-mk-677-two-year-older-adult-trial-data\/"},"modified":"2026-08-28T07:31:46","modified_gmt":"2026-08-28T07:31:46","slug":"ibutamoren-mk-677-two-year-older-adult-trial-data","status":"publish","type":"post","link":"https:\/\/nhdbio.com\/pt-br\/ibutamoren-mk-677-two-year-older-adult-trial-data\/","title":{"rendered":"Ibutamoren (MK-677) em adultos mais velhos: dados de composi\u00e7\u00e3o corporal de dois anos e o ganho funcional ausente"},"content":{"rendered":"<p class=\"pim-standfirst wp-block-paragraph\">Um ensaio de dois anos em idosos saud\u00e1veis \u200b\u200b65 \u00e9 frequentemente citado para mudan\u00e7a de massa magra. O mesmo artigo tamb\u00e9m n\u00e3o relatou melhora na for\u00e7a ou fun\u00e7\u00e3o, aumento do peso corporal, maior glicemia de jejum e redu\u00e7\u00e3o da sensibilidade \u00e0 insulina.<\/p><div class=\"wp-block-group pim-key-takeaways\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\"><h2 class=\"wp-block-heading\">O que o registro mostra<\/h2><ul class=\"wp-block-list\"><li>A massa isenta de gordura aumentou 1.1 kg com MK-677 e caiu 0.5 kg com placebo.<\/li><li>A mudan\u00e7a n\u00e3o se traduziu em melhora da for\u00e7a ou da fun\u00e7\u00e3o f\u00edsica.<\/li><li>A glicemia de jejum aumentou 0.3 mmol\/L e a sensibilidade \u00e0 insulina diminuiu.<\/li><\/ul><\/div><\/div><figure class=\"wp-block-image size-full pim-article-figure\"><img loading=\"lazy\" decoding=\"async\" width=\"1536\" height=\"1024\" src=\"http:\/\/nhdbio.com\/wp-content\/uploads\/2026\/08\/gh-secretagogue-research-20260828.png\" alt=\"Cientista revisando dados de pesquisa do horm\u00f4nio de crescimento puls\u00e1til e IGF-1\" class=\"wp-image-459\" srcset=\"https:\/\/nhdbio.com\/wp-content\/uploads\/2026\/08\/gh-secretagogue-research-20260828.png 1536w, https:\/\/nhdbio.com\/wp-content\/uploads\/2026\/08\/gh-secretagogue-research-20260828-300x200.png 300w, https:\/\/nhdbio.com\/wp-content\/uploads\/2026\/08\/gh-secretagogue-research-20260828-1024x683.png 1024w, https:\/\/nhdbio.com\/wp-content\/uploads\/2026\/08\/gh-secretagogue-research-20260828-768x512.png 768w\" sizes=\"auto, (max-width: 1536px) 100vw, 1536px\" \/><figcaption class=\"wp-element-caption\">Ilustra\u00e7\u00e3o editorial original do contexto da pesquisa. N\u00e3o \u00e9 uma figura de estudo, imagem do paciente, fotografia do produto fornecido ou representa\u00e7\u00e3o de material de estudo.<\/figcaption><\/figure><h2 class=\"wp-block-heading\">Registro de estudo<\/h2><p class=\"wp-block-paragraph\">O estudo mostra por que um desfecho substituto ou de composi\u00e7\u00e3o n\u00e3o pode substituir um resultado relevante para o paciente. Aumentar GH e IGF-1 e alterar a massa livre de gordura n\u00e3o melhorou os resultados funcionais medidos.<\/p><div class=\"wp-block-group pim-evidence-table\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\"><div class=\"pim-evidence-row\"><strong>Participantes<\/strong><span>65 adultos saud\u00e1veis \u200b\u200bcom idade entre 60 e 81 anos<\/span><\/div><div class=\"pim-evidence-row\"><strong>Dura\u00e7\u00e3o<\/strong><span>At\u00e9 24 meses<\/span><\/div><div class=\"pim-evidence-row\"><strong>Massa sem gordura<\/strong><span>+1.1 kg vs \u22120.5 kg<\/span><\/div><div class=\"pim-evidence-row\"><strong>Peso corporal<\/strong><span>+2.7 kg vs +0.8 kg<\/span><\/div><div class=\"pim-evidence-row\"><strong>Fun\u00e7\u00e3o<\/strong><span>Nenhuma melhora na for\u00e7a ou fun\u00e7\u00e3o f\u00edsica<\/span><\/div><\/div><\/div><h2 class=\"wp-block-heading\">Resultados no contexto<\/h2><p class=\"wp-block-paragraph\">Os autores tamb\u00e9m relataram aumento do apetite, edema leve e transit\u00f3rio dos membros inferiores e dores musculares entre os efeitos adversos frequentes. Os resultados da glicose movem-se numa dire\u00e7\u00e3o desfavor\u00e1vel e merecem igual destaque ao lado do resultado da massa magra.<\/p><p class=\"wp-block-paragraph\">Um estudo separado de fase IIb sobre fratura de quadril inscreveu pacientes mais velhos do 123 e terminou precocemente ap\u00f3s um sinal de seguran\u00e7a de insufici\u00eancia card\u00edaca congestiva. Seus resultados funcionais mistos n\u00e3o reparam esse sinal de risco.<\/p><h2 class=\"wp-block-heading\">O que este estudo n\u00e3o pode responder<\/h2><p class=\"wp-block-paragraph\">A popula\u00e7\u00e3o do estudo foram idosos saud\u00e1veis, e n\u00e3o atletas ou pessoas em busca de recomposi\u00e7\u00e3o corporal.<\/p><p class=\"wp-block-paragraph\">Os dados prov\u00eam de um produto e protocolo investigacional definido, e n\u00e3o de um material comercial n\u00e3o verificado.<\/p>","protected":false},"excerpt":{"rendered":"<p>Um ensaio de dois anos em idosos saud\u00e1veis \u200b\u200b65 \u00e9 frequentemente citado para mudan\u00e7a de massa magra. O mesmo artigo tamb\u00e9m n\u00e3o relatou melhora na for\u00e7a ou fun\u00e7\u00e3o, aumento do peso corporal, maior glicemia de jejum e redu\u00e7\u00e3o da sensibilidade \u00e0 insulina.<\/p>","protected":false},"author":1,"featured_media":631,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"pim_family_ids":"351","pim_article_type":"Published study case","pim_evidence_level":"Randomized human trial; biochemical and body-composition endpoints","pim_reviewer":"NHD evidence editorial workflow","pim_reviewed_date":"2026-08-28","pim_editorial_note":"Source-checked on 2026-08-28. Null findings and study limitations are retained. This is not independent peer review, medical advice, a customer case, or validation of a catalog lot.","pim_review_status":"reviewed","pim_review_reason":"At least two linked primary or authoritative records and an explicit evidence boundary are present.","pim_creation_method":"The editorial workflow starts with linked peer-reviewed papers, trial registries or regulatory records; extracts the population or model, endpoints, numerical results and limitations; and separates the studied intervention from catalog material. AI-assisted drafting was used to structure the first version. Claims, figures, evidence labels and limitations were checked against the linked records in the site editorial workflow. This is not independent peer review.","pim_sources":"[{\"title\":\"MK-677 in healthy older adults: two-year randomized trial\",\"url\":\"https:\/\/pubmed.ncbi.nlm.nih.gov\/18981485\/\",\"note\":\"Body composition, function and glucose findings; PMID 18981485.\"},{\"title\":\"MK-0677 phase IIb hip-fracture study\",\"url\":\"https:\/\/pubmed.ncbi.nlm.nih.gov\/21067829\/\",\"note\":\"Early termination after CHF signal; PMID 21067829.\"},{\"title\":\"FDA Pharmacy Compounding Advisory Committee meeting materials\",\"url\":\"https:\/\/www.fda.gov\/advisory-committees\/advisory-committee-calendar\/october-29-2024-meeting-pharmacy-compounding-advisory-committee-10292024\",\"note\":\"FDA assessment materials for ibutamoren and ipamorelin.\"}]","footnotes":""},"categories":[19],"tags":[],"class_list":["post-466","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-published-study-cases"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.0 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Ibutamoren in Older Adults: Two-Year Trial Results<\/title>\n<meta name=\"description\" content=\"A two-year trial in 65 healthy older adults is often quoted for lean-mass change. 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