{"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\/es\/ibutamoren-mk-677-two-year-older-adult-trial-data\/","title":{"rendered":"Ibutamoren (MK-677) en adultos mayores: datos de composici\u00f3n corporal de dos a\u00f1os y ganancia funcional faltante"},"content":{"rendered":"<p class=\"pim-standfirst wp-block-paragraph\">A menudo se cita un ensayo de dos a\u00f1os en 65 adultos mayores sanos para determinar el cambio en la masa magra. El mismo art\u00edculo tampoco inform\u00f3 ninguna mejora en la fuerza o la funci\u00f3n, aumento del peso corporal, aumento de la glucosa en ayunas y reducci\u00f3n de la sensibilidad a la 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\">Lo que muestra el registro<\/h2><ul class=\"wp-block-list\"><li>La masa libre de grasa aument\u00f3 en 1.1 kg con MK-677 y disminuy\u00f3 en 0.5 kg con placebo.<\/li><li>El cambio no se tradujo en una mejora de la fuerza o la funci\u00f3n f\u00edsica.<\/li><li>La glucosa en ayunas aument\u00f3 en 0.3 mmol\/L y la sensibilidad a la insulina disminuy\u00f3.<\/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=\"Cient\u00edfico revisando datos de investigaci\u00f3n sobre la hormona de crecimiento puls\u00e1til y 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\">Ilustraci\u00f3n editorial original del contexto de la investigaci\u00f3n. No es una figura de estudio, una imagen de un paciente, una fotograf\u00eda del producto suministrado ni una representaci\u00f3n de material de prueba.<\/figcaption><\/figure><h2 class=\"wp-block-heading\">Registro de estudio<\/h2><p class=\"wp-block-paragraph\">El ensayo muestra por qu\u00e9 un criterio de valoraci\u00f3n sustituto o de composici\u00f3n no puede sustituir un resultado relevante para el paciente. El aumento de GH y IGF-1 y el cambio de masa magra no mejoraron los resultados funcionales 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 sanos de edades 60\u201381 a\u00f1os<\/span><\/div><div class=\"pim-evidence-row\"><strong>Duraci\u00f3n<\/strong><span>Hasta 24 meses<\/span><\/div><div class=\"pim-evidence-row\"><strong>Masa sin grasa<\/strong><span>+1.1 kg frente a \u22120.5 kg<\/span><\/div><div class=\"pim-evidence-row\"><strong>peso corporal<\/strong><span>+2.7 kg frente a +0.8 kg<\/span><\/div><div class=\"pim-evidence-row\"><strong>Funci\u00f3n<\/strong><span>No hay mejora en la fuerza o la funci\u00f3n f\u00edsica.<\/span><\/div><\/div><\/div><h2 class=\"wp-block-heading\">Resultados en contexto<\/h2><p class=\"wp-block-paragraph\">Los autores tambi\u00e9n informaron aumento del apetito, edema leve transitorio de las extremidades inferiores y dolor muscular entre los efectos adversos frecuentes. Los resultados de la glucosa van en una direcci\u00f3n desfavorable y merecen igual importancia que el resultado de la masa magra.<\/p><p class=\"wp-block-paragraph\">Un estudio separado de fase IIb sobre fractura de cadera inscribi\u00f3 a pacientes mayores de 123 y finaliz\u00f3 temprano despu\u00e9s de una se\u00f1al de seguridad de insuficiencia card\u00edaca congestiva. Sus resultados funcionales mixtos no reparan esa se\u00f1al de riesgo.<\/p><h2 class=\"wp-block-heading\">Lo que este estudio no puede responder<\/h2><p class=\"wp-block-paragraph\">La poblaci\u00f3n de estudio fueron adultos mayores sanos, no deportistas ni personas que buscaban la recomposici\u00f3n corporal.<\/p><p class=\"wp-block-paragraph\">Los datos provienen de un producto y un protocolo de investigaci\u00f3n definidos, no de un material comercial no verificado.<\/p>","protected":false},"excerpt":{"rendered":"<p>A menudo se cita un ensayo de dos a\u00f1os en 65 adultos mayores sanos para determinar el cambio en la masa magra. El mismo art\u00edculo tampoco inform\u00f3 ninguna mejora en la fuerza o la funci\u00f3n, aumento del peso corporal, aumento de la glucosa en ayunas y reducci\u00f3n de la sensibilidad a la 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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