A man in his fifties holding a dumbbell at the top of a single-arm row in a cold, evenly lit gym

Evidence & Sources

The reading behind every rep we recommend

Strength training evidence should be checkable. Here is what informs our guidance for men over 45 in the UK, and how we decide when a recommendation needs updating.

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1 Pick the question
2 Read the guidance
3 Check the studies
4 Write it plainly
5 Set a review date

Where it comes from

The sources we actually read

We do not treat one paper as a rule for everyone. Guidance for resistance training in older adults is strongest where a public health body, a clinical body, and a body of peer-reviewed trials agree. When they disagree, we say so on the page rather than smoothing it over.

1 UK Chief Medical Officers' Physical Activity Guidelines National guidance
2 American College of Sports Medicine position stands Clinical body
3 Journal of Applied Physiology and similar peer-reviewed journals Research
4 London Bridge Sports Medicine and comparable sports medicine clinics Practitioner input
5 Cochrane-style reviews and systematic reviews of resistance training in older adults Synthesis

These are the bodies and journals we return to most. They are listed because they shape the advice, not as a stamp of approval, and they do not sponsor the site.

What we will and will not claim

If the evidence is thin, the page says thin.

Every article on this site is written for a reader, not for a search engine. When a claim rests on strong, repeated findings, we say so. When it rests on a small trial, an animal study, or a consensus statement that has not been tested in men over 45, we describe it that way and tell you what is still unknown. Muscle-strengthening activity guidance has shifted more than once in the last decade; a page that never updates is a page that has stopped being useful.

We do not sell supplements, programmes, or equipment, so there is nothing on this page pushing you toward a purchase. If a recommendation changes because new research contradicts it, we change the recommendation and note the date on the page.

How a page gets updated

A new review lands that touches the topic.
We read it, and check whether it changes the advice.
If it does, the page is rewritten and re-dated.

Reading the strength of a claim

Not all evidence is the same weight

Held with more confidence

Repeated across large groups

Findings that hold up across multiple trials, large samples, and independent research groups. For example, the general value of resistance training for maintaining muscle and function as you age sits here. We present these as settled enough to plan around.

Handled with care

Promising, but not yet settled

Findings from small trials, single research groups, or studies in younger or different populations. Promising for bone health and recovery, but not yet something we would build a whole programme around. We flag these clearly so you know how much room there is for doubt.

Our test for a claim

Four questions before it goes on the page

Matte black weight plates resting on a dark gym floor under cool overhead light

1 Who was studied, and were they men over 45?
2 How large was the sample, and did anyone else repeat it?
3 Was the training described in enough detail to copy it?
4 Does the finding survive the trip from the lab to a real gym?

A study that clears all four becomes advice. A study that clears only one or two becomes a note on the page, described as uncertain.

Questions readers send us

If your question is not here, ask it directly and we will answer it in plain language, with the sources we used.

Do I need to read the studies myself?

No. The page should give you the practical version, and the sources are listed so you can check the reasoning if you want to. If something in the explanation does not match the source it cites, tell us and we will fix it.

How often is the site updated?

Pages are reviewed on a rolling basis and re-dated whenever the advice changes. A page with an old date is not necessarily wrong, but it does mean the guidance behind it has not been re-checked recently, and we would rather you knew that.

Why do some pages mention what is still unclear?

Because uncertainty is part of the answer. If a training method shows promise for bone density but the trials are small or short, the honest recommendation is to treat it as worth trying alongside what is better established, not as a replacement for it.

Does this page replace medical advice?

No. It is an educational resource for men over 45 who want to train for strength safely. If you have a heart condition, a recent injury, or a diagnosis that affects how you train, speak to your GP or a clinician before changing your routine.

Put the reading to work

Sources are only useful if they change what you do on the gym floor. These pages take the same evidence and turn it into something you can follow this week.

Still unsure?

Ask us where a recommendation comes from

If you have read a claim here and want to know which source it rests on, or how confident we are in it, send the question. We answer in plain language and tell you when the honest answer is that the evidence is mixed.

Reach the team

Monday to Friday, 9:00 AM – 6:00 PM

15 Deansgate, Manchester, M3 1NW, United Kingdom

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