{"id":427395,"date":"2026-01-21T09:01:13","date_gmt":"2026-01-21T09:01:13","guid":{"rendered":"https:\/\/www.newsbeep.com\/au\/427395\/"},"modified":"2026-01-21T09:01:13","modified_gmt":"2026-01-21T09:01:13","slug":"a-47-year-study-tells-us-the-exact-age-when-your-strength-and-fitness-begin-to-decline-and-im-stunned","status":"publish","type":"post","link":"https:\/\/www.newsbeep.com\/au\/427395\/","title":{"rendered":"A 47-year study tells us the exact age when your strength and fitness begin to decline, and I\u2019m stunned"},"content":{"rendered":"<p id=\"189181d7-60c4-4480-b2d5-e81a672fcd0f\">A 47-year Swedish study published in 2026 can tell us when fitness and strength begin declining \u2014 and I\u2019m very surprised.<\/p>\n<p>The study followed adults for almost five decades to uncover when physical decline truly begins. They looked at fitness, strength and muscle endurance, and how this evolves in adulthood. Here\u2019s everything you need to know about the mammoth study and what age your physical fitness really starts to fade out (plus, how to fix it).<\/p>\n<p><a id=\"elk-531259a1-68cc-4005-8105-23c2f2f7fb5b\" class=\"paywall\" aria-hidden=\"true\" data-url=\"\" href=\"\" target=\"_blank\" referrerpolicy=\"no-referrer-when-downgrade\" data-hl-processed=\"none\"\/>What is the study?<\/p>\n<p class=\"vanilla-image-block\" style=\"padding-top:56.37%;\">\n<p><img decoding=\"async\" src=\"https:\/\/www.newsbeep.com\/au\/wp-content\/uploads\/2026\/01\/z82hdKvkKeHGch7eQZSmRi.jpg\" alt=\"a woman running across a bridge\"   loading=\"lazy\" data-new-v2-image=\"true\" data-original-mos=\"https:\/\/www.newsbeep.com\/au\/wp-content\/uploads\/2026\/01\/z82hdKvkKeHGch7eQZSmRi.jpg\" data-pin-media=\"https:\/\/www.newsbeep.com\/au\/wp-content\/uploads\/2026\/01\/z82hdKvkKeHGch7eQZSmRi.jpg\"\/>\n<\/p>\n<p>(Image credit: Shutterstock)<\/p>\n<p id=\"08e02e9c-e700-41f6-b451-01e1864c2603\">I came across the study in<a data-analytics-id=\"inline-link\" href=\"https:\/\/www.sciencedaily.com\/releases\/2026\/01\/260116035336.htm\" target=\"_blank\" data-url=\"https:\/\/www.sciencedaily.com\/releases\/2026\/01\/260116035336.htm\" referrerpolicy=\"no-referrer-when-downgrade\" data-hl-processed=\"none\" data-mrf-recirculation=\"inline-link\" rel=\"nofollow noopener\"> Science Daily<\/a>, but it was conducted at the <a data-analytics-id=\"inline-link\" href=\"https:\/\/news.ki.se\/long-term-study-reveals-physical-ability-peaks-at-age-35\" target=\"_blank\" rel=\"nofollow noopener\" data-url=\"https:\/\/news.ki.se\/long-term-study-reveals-physical-ability-peaks-at-age-35\" referrerpolicy=\"no-referrer-when-downgrade\" data-hl-processed=\"none\" data-mrf-recirculation=\"inline-link\">Karolinska Institutet<\/a>. Researchers followed people for almost 50 years to assess how physical performance evolves as we age, and the results were surprising \u2014 to me, at least.<\/p>\n<p>You may like<\/p>\n<p>According to the Swedish study, fitness and strength often begin to decline around age 35 and continue to worsen gradually as we age. As a 35-year-old female, I find this pretty alarming.<\/p>\n<p><a id=\"elk-seasonal\" class=\"paywall\" aria-hidden=\"true\" data-url=\"\" href=\"\" target=\"_blank\" referrerpolicy=\"no-referrer-when-downgrade\" data-hl-processed=\"none\"\/><\/p>\n<p id=\"fd844b6c-cf90-4f3e-85dc-121a3a5511e4-0\">According to the Swedish study, fitness and strength often begin to decline around age 35 and continue to worsen gradually as we age. As a 35-year-old female, I find this pretty alarming. That said, it\u2019s not all doom and gloom, because the research suggests adults can <a data-analytics-id=\"inline-link\" href=\"https:\/\/www.tomsguide.com\/wellness\/workouts\/im-an-83-year-old-personal-trainer-and-staying-active-remains-non-negotiable-for-me-heres-how-i-stay-fit-and-motivated\" data-mrf-recirculation=\"inline-link\" data-before-rewrite-localise=\"https:\/\/www.tomsguide.com\/wellness\/workouts\/im-an-83-year-old-personal-trainer-and-staying-active-remains-non-negotiable-for-me-heres-how-i-stay-fit-and-motivated\" rel=\"nofollow noopener\" target=\"_blank\">begin exercising at any age<\/a>, and even starting exercise later in life can have meaningful benefits.<\/p>\n<p>In fact, it states that those who adopted exercise later still managed to improve physical capacity by up to 10%. \u201cIt\u2019s a powerful reminder that staying active matters, even if you start late,\u201d says the research, which is part of the Swedish Physical Activity and Fitness study (SPAF) and was also published in the Journal of Cachexia, Sarcopenia and Muscle.<\/p>\n<p>Several hundred people were randomly selected between 16 and 63, including men and women. It\u2019s rare for studies to follow people for such a long period, so this offers a unique insight into how the body changes over time.<\/p>\n<p>At any age, exercise boosts physical ability and slows the inevitable decline in strength and fitness as we get older.<\/p>\n<p class=\"newsletter-form__strapline\">Get instant access to breaking news, the hottest reviews, great deals and helpful tips.<\/p>\n<p><a id=\"elk-2d35bc3a-ca34-4a5d-82f5-133c01f81ddb\" class=\"paywall\" aria-hidden=\"true\" data-url=\"\" href=\"\" target=\"_blank\" referrerpolicy=\"no-referrer-when-downgrade\" data-hl-processed=\"none\"\/>What does the research mean?<\/p>\n<p class=\"vanilla-image-block\" style=\"padding-top:56.25%;\">\n<p><img decoding=\"async\" src=\"https:\/\/www.newsbeep.com\/au\/wp-content\/uploads\/2025\/08\/mHmZzH3fVjxF7THLBrFVGV.jpg\" alt=\"a photo of a woman holding a barbell\"   loading=\"lazy\" data-new-v2-image=\"true\" data-original-mos=\"https:\/\/www.newsbeep.com\/au\/wp-content\/uploads\/2025\/08\/mHmZzH3fVjxF7THLBrFVGV.jpg\" data-pin-media=\"https:\/\/www.newsbeep.com\/au\/wp-content\/uploads\/2025\/08\/mHmZzH3fVjxF7THLBrFVGV.jpg\"\/>\n<\/p>\n<p>(Image credit: Shutterstock)<\/p>\n<p id=\"3cf3d433-344e-4ffb-8a78-3a79790c3afa\">Interestingly, the decline occurred regardless of how well-trained people were before 35. But, post-35, decline continues gradually, says researchers, which then speeds up with advancing age.<\/p>\n<p>However, \u201cencouraging evidence\u201d tells us that exercise can slow this process down and help increase physical capacity by 5-10%, which also slows decline in performance, but doesn\u2019t completely prevent it.<\/p>\n<p>That means it\u2019s never too late to <a data-analytics-id=\"inline-link\" href=\"https:\/\/www.tomsguide.com\/wellness\/fitness\/i-did-yoga-every-day-for-a-month-for-the-first-time-in-10-years-heres-what-happened-to-my-body\" data-mrf-recirculation=\"inline-link\" data-before-rewrite-localise=\"https:\/\/www.tomsguide.com\/wellness\/fitness\/i-did-yoga-every-day-for-a-month-for-the-first-time-in-10-years-heres-what-happened-to-my-body\" rel=\"nofollow noopener\" target=\"_blank\">start a yoga routine<\/a>, take up <a data-analytics-id=\"inline-link\" href=\"https:\/\/www.tomsguide.com\/features\/3-things-i-wish-i-had-known-as-a-pilates-beginner\" data-mrf-recirculation=\"inline-link\" data-before-rewrite-localise=\"https:\/\/www.tomsguide.com\/features\/3-things-i-wish-i-had-known-as-a-pilates-beginner\" rel=\"nofollow noopener\" target=\"_blank\">Pilates<\/a>, or even head to your local gym to lift weights. Whether you enjoy <a data-analytics-id=\"inline-link\" href=\"https:\/\/www.tomsguide.com\/wellness\/fitness\/these-3-walking-workouts-boost-your-metabolism-and-build-lower-body-strength\" data-mrf-recirculation=\"inline-link\" data-before-rewrite-localise=\"https:\/\/www.tomsguide.com\/wellness\/fitness\/these-3-walking-workouts-boost-your-metabolism-and-build-lower-body-strength\" rel=\"nofollow noopener\" target=\"_blank\">walking workouts<\/a>, swimming, or cycling, any movement matters.<\/p>\n<p>The research is still ongoing, according to researchers, who say participants will be re-examined when they reach 68, plus there will be a deeper look into lifestyle choices, overall health and biological processes. I can\u2019t wait to hear about it.<\/p>\n<p><a href=\"https:\/\/news.google.com\/publications\/CAAqKAgKIiJDQklTRXdnTWFnOEtEWFJ2YlhObmRXbGtaUzVqYjIwb0FBUAE\" rel=\"nofollow noopener\" id=\"342159e8-09ff-4f4b-9bc2-5302e075b097\" data-url=\"https:\/\/news.google.com\/publications\/CAAqKAgKIiJDQklTRXdnTWFnOEtEWFJ2YlhObmRXbGtaUzVqYjIwb0FBUAE\" target=\"_blank\" referrerpolicy=\"no-referrer-when-downgrade\" data-hl-processed=\"none\"><\/p>\n<p class=\"vanilla-image-block\" style=\"padding-top:31.51%;\">\n<p><img decoding=\"async\" src=\"https:\/\/www.newsbeep.com\/au\/wp-content\/uploads\/2025\/12\/r3t8zZ5ve4GewFTeoCM3R6.jpg\" alt=\"Google News\"   loading=\"lazy\" data-new-v2-image=\"true\" data-original-mos=\"https:\/\/www.newsbeep.com\/au\/wp-content\/uploads\/2025\/12\/r3t8zZ5ve4GewFTeoCM3R6.jpg\" data-pin-media=\"https:\/\/www.newsbeep.com\/au\/wp-content\/uploads\/2025\/12\/r3t8zZ5ve4GewFTeoCM3R6.jpg\" class=\"pull-right\"\/>\n<\/p>\n<p><\/a><\/p>\n<p id=\"720cb38b-b6df-44a7-aeca-591f28294476\">Follow <a data-analytics-id=\"inline-link\" href=\"https:\/\/news.google.com\/publications\/CAAqKAgKIiJDQklTRXdnTWFnOEtEWFJ2YlhObmRXbGtaUzVqYjIwb0FBUAE\" target=\"_blank\" data-url=\"https:\/\/news.google.com\/publications\/CAAqKAgKIiJDQklTRXdnTWFnOEtEWFJ2YlhObmRXbGtaUzVqYjIwb0FBUAE\" referrerpolicy=\"no-referrer-when-downgrade\" data-hl-processed=\"none\" data-mrf-recirculation=\"inline-link\" rel=\"nofollow noopener\">Tom&#8217;s Guide on Google News<\/a> and <a data-analytics-id=\"inline-link\" href=\"https:\/\/google.com\/preferences\/source?q=tomsguide.com\" target=\"_blank\" data-url=\"https:\/\/google.com\/preferences\/source?q=tomsguide.com\" referrerpolicy=\"no-referrer-when-downgrade\" data-hl-processed=\"none\" data-mrf-recirculation=\"inline-link\" rel=\"nofollow noopener\">add us as a preferred source<\/a> to get our up-to-date news, analysis, and reviews in your feeds. <\/p>\n<p><a id=\"elk-more-from-tom-s-guide\" class=\"paywall\" aria-hidden=\"true\" data-url=\"\" href=\"\" target=\"_blank\" referrerpolicy=\"no-referrer-when-downgrade\" data-hl-processed=\"none\"\/>More from Tom&#8217;s Guide<\/p>\n","protected":false},"excerpt":{"rendered":"A 47-year Swedish study published in 2026 can tell us when fitness and strength begin declining \u2014 and&hellip;\n","protected":false},"author":2,"featured_media":427396,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[37],"tags":[64,63,538,137],"class_list":{"0":"post-427395","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-fitness","8":"tag-au","9":"tag-australia","10":"tag-fitness","11":"tag-health"},"_links":{"self":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/posts\/427395","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/comments?post=427395"}],"version-history":[{"count":0,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/posts\/427395\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/media\/427396"}],"wp:attachment":[{"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/media?parent=427395"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/categories?post=427395"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.newsbeep.com\/au\/wp-json\/wp\/v2\/tags?post=427395"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}