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Opinion or narrative review

Review of studies: strength activity linked to lower death, less benefit at high amounts

Giovannucci and colleagues · Journal of internal medicine · 2021

Original title: Muscle-strengthening activities and risk of cardiovascular disease, type 2 diabetes, cancer and mortality: A review of prospective cohort studies.

Under review. A person has not yet checked this summary against the paper. It is written from the PubMed abstract. Until a person checks it, search engines are asked not to list this page.

What the study found

Mixed

About 60 to 150 min a week was linked to about 20%-25% lower all-cause death (six studies). Some studies show less benefit, or harm, at 2.5 h/week or more.

The study at a glance

Type of study
Opinion or narrative review
Who or what was studied
adults mostly free of major chronic disease at the start
What was tested
Review of large cohort studies of muscle-strengthening activity (1-2 sessions, about 60-150 min a week) and disease and death
What it measured
The question itself: death from any cause and healthy aging
Who has a stake
No disclosure in PubMed
No disclosure in PubMed.
Journal
Journal of internal medicine, 2021
Source
PubMed record 34120373. This page is based on the abstract only.

How much this study counts

  • –An opinion or narrative review: no new data, and no set method for choosing which studies to discuss.
  • •The PubMed record has no conflict-of-interest statement.
  • •Summarized from the PubMed abstract only. The full paper may hold details the abstract leaves out.

✓ Strength– Limit• Note

These points come from fixed rules about the type of study, its size and length, what it measured, and who has a stake. Every study on Digestery gets the same rules.

Where this study sits

This paper is not on the ladder. It is a opinion or narrative review, and reviews and opinion pieces discuss studies that are already counted on the steps below.

↑ Stronger evidence

  1. Trials in people: death and healthy aging

    0

    Not done yet. This is the step that would answer the question.

  2. Trials in people: other measures

    9

    7 benefit, 2 no difference

  3. Trials in people: lab tests or safety

    0

    None among the papers we read.

  4. Population studies

    9

    8 benefit, 1 mixed

  5. Blood levels and genes

    0

    None among the papers we read.

↓ Weaker evidence

  • Points to benefit
  • Mixed
  • No difference
  • No direction
  • Points to harm

How it fits with the other research

The short answer to “Does strength training help you live longer?”

Linked to longer life; not proven.

Confidence: low. Based on 26 on-topic papers.

Read the full answer

Other opinion on this question

See all 26 studies on this question

How this page was made

Label

First read of the abstract
Claude Sonnet
Independent second read
Claude Haiku
Differences settled
The two reads differed. The reviewer checked the abstract and kept the first read. Claude Opus 5.5.
Headline
Claude Sonnet, from the checked study record. A script checked its numbers and wording.
Numbers
Checked against the abstract by a script
“How much this study counts”
Fixed rules, the same for every study
Source check by a person
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