Beyond Strength: Function, Bone, Cognition, Metabolic and Mixed Cardiovascular Effects
Beyond strength and size, resistance training improves physical function and bone density in older adults, with a promising signal for cognition, improved body composition and lipid markers in older adults, mixed cardiovascular effects, and blunted explosive strength when aerobic work is added.
Those with diagnosed osteoporosis or prior fragility fractures should train under professional guidance to choose their loading and avoid high-risk spinal flexion.
- Diagnosed osteoporosis or prior fragility fracture
- Acute back pain or suspected fracture
What the evidence says
The sources are trials, a cohort study and meta-analyses of resistance training and outcomes beyond strength and size, mostly in middle-aged and older adults. Physical function: Radaelli 2024 (meta-analysis) reports that a low volume of resistance training improved timed-up-and-go (SMD −1.20), six-minute walk (SMD 1.03) and lean body mass in healthy older adults; Straight 2016 (meta-analysis) reports improved lower-extremity muscle power in adults aged 50 and over (d = 0.34); Wang 2023 (meta-analysis) reports improved local muscle endurance in middle-aged and older adults (g = 1.10 upper body, 1.18 lower body); Baxter 2024 (randomised trial) reports that once-weekly eccentric training can be as effective as twice-weekly training for improving neuromuscular function in older adults. Bone: Pimenta 2019 (systematic review) reports that 72% of studies showed changes in bone mineral content or density. Cognition: Marston 2019 (randomised trial) reports that 12 weeks of intense resistance training improved delayed verbal memory (g = 0.67 to 0.79); Sheoran 2023 (randomised trial) concludes that resistance training may be protective against aging-associated neurodegeneration. Metabolic: Ihalainen 2019 (randomised trial) suggests that resistance training more than twice a week can improve body composition and lipid profiles in healthy older adults. Cardiovascular, where the sources differ: Pamart 2025 (cohort) reports reductions in blood pressure and heart rate with high-intensity resistance training, while Werner 2019 (randomised trial) concludes that chronic resistance training does not appear to influence central arterial stiffness, regardless of volume and load. Concurrent training: Schumann 2021 (meta-analysis) reports no effect on maximal strength or hypertrophy but blunted explosive strength (SMD −0.28) when aerobic training is added, and Lundberg 2022 (meta-analysis) that concurrent training may attenuate muscle-fibre hypertrophy (SMD −0.23), especially with running.
- (myth: Only weight-bearing cardio like walking builds bone.) CORRECTION: Progressive resistance training improves femur and hip bone mineral density in older adults.
- Does not diagnose, treat or cure osteoporosis or any disease
- Not a substitute for medical management of bone disease
- BMD outcomes are population-level; individual results vary
- Agreement
- sources not comparable. Direction recorded for 9 of 12 sources; not yet recorded for the rest.
- The claim's outcome
- Outcome not yet recorded
- Certainty
- No source states a certainty rating.
What each source measured and concluded (12)
- What it measured
- Peak torque (PT) of knee extension and flexion; neurometabolite ratios (tNAA/tCr, tCho/tCr, Glx/tCr, mIns/tCr) in hippocampus, sensorimotor, and prefrontal cortices.
- How it measured it
- Isokinetic dynamometer for PT; proton magnetic resonance spectroscopy (1H-MRS) for neurometabolites.
- Direction it states for the claim's outcome
- Improved
- How it was read
- read in full text
- What it measured
- 1. Cognitive function (delayed verbal memory) via CogState computerised battery (validated tool). 2. Secondary outcomes: Maximal muscle strength via 1RM test; Body composition. 3. Compared to non-exercising control group and baseline.
- Direction it states for the claim's outcome
- Improved
- Its conclusion, in its own words
- “12 weeks of intense resistance training improves delayed verbal memory irrespective of training design (i.e., high-load vs. moderate-load).”
- How it was read
- read in full text
- What it measured
- Lower-limb muscle power, strength, and size.
- How it measured it
- Muscle power: 10-repetition sit-to-stand (STS) test; Strength: dynamometry for RTD, contractile impulse, and knee extensor torque during MVIC, and eccentric lower-limb force on a recumbent isokinetic stepper ergometer; Muscle size: real-time two-dimensional B-mode ultrasonography.
- How it was read
- read in full text
- What it measured
- Body composition (fat mass, lean mass), inflammation markers (IL-6, hs-CRP), lipid profile (HDL, LDL, triglycerides), glycemic profile (glucose, insulin, HbA1c), and blood pressure.
- How it measured it
- Dual X-ray absorptiometry for body composition; commercial immunoassay techniques for blood markers; automated device for blood pressure.
- Direction it states for the claim's outcome
- Improved
- How it was read
- read in full text
- What it measured
- Maximal strength, explosive strength, and muscle hypertrophy.
- How it measured it
- Specific tests: isometric and isoinertial measurements for maximal strength, jump tests or isometric rate of force development for explosive strength, and objective measurements like ultrasound or MRI for muscle hypertrophy.
- How it was read
- read in full text
- What the review says it includes
- meta-analysis, systematic review
- Studies and participants, as stated
- N = 1090 participants across 43 studies
- What it measured
- Association between muscle strength gains and biventricular cardiac remodeling.
- How it measured it
- Muscle strength: Con-Trex isokinetic dynamometer and field-based 1-RM tests; Cardiac remodeling: three-dimensional transthoracic echocardiography (3DTTE).
- Direction it states for the claim's outcome
- Improved
- How it was read
- read in full text
- What it measured
- Bone mineral content/density (BMC/BMD), muscle strength, body composition.
- How it measured it
- Laboratory tests (e.g., DXA for BMC/BMD), validated strength tests (e.g., 1RM), body composition analysis.
- Direction it states for the claim's outcome
- Improved
- How it was read
- read in full text
- What it measured
- Hypertrophy of type I and type II muscle fibers.
- Direction it states for the claim's outcome
- Worsened
- How it was read
- read in full text
- What the review says it includes
- meta-analysis
- Studies and participants, as stated
- N = 300 participants across 15 studies
- What it measured
- Local muscle endurance (LME)
- How it measured it
- Via maximal repetitions during an isotonic test
- How it was read
- read in full text
- What the review says it includes
- systematic review with meta-analysis
- Heterogeneity, as stated
- LIMITATIONS: Moderate heterogeneity and publication bias;
- What it measured
- Lower-extremity muscle power via leg press (LP) and knee extension (KE).
- How it measured it
- Quantified in watts, likely using a laboratory test or objective measurement tool.
- Direction it states for the claim's outcome
- Improved
- How it was read
- read in full text
- What it measured
- Physical function (fast walking speed, timed up and go, 6-min walking tests), lean body mass, lower-body muscle hypertrophy, lower-body muscle strength (knee extension and leg press 1-RM, isometric muscle strength, isokinetic torque).
- How it measured it
- Standardized tests (validated).
- Direction it states for the claim's outcome
- Improved
- How it was read
- read in full text
- What the review says it includes
- systematic review and meta-analysis
- Studies and participants, as stated
- N = 6306 participants across 151 studies
- What it measured
- Arterial stiffness indices
- How it measured it
- Validated measurements
- Direction it states for the claim's outcome
- No effect
- Its conclusion, in its own words
- “chronic resistance training does not appear to influence central arterial stiffness, regardless of training volume and load.”
- How it was read
- read in full text
Each source below is shown with its study design and a link to the original study, or, where it is not a completed research paper, with what kind of record it is; those are not counted. This is the audit trail.
Why do some records show a record type instead of a study design?
A study design is shown for a completed, peer-reviewed paper. A registered protocol, a preprint, a conference abstract, a referee report or a book chapter has not been through peer review as a finished paper, so it is labelled for what it is, and it is counted in no source count. Where a record could not be confirmed as a completed paper at all, it says so rather than guessing. They all stay in the list, and their DOI still resolves, because the count of what was screened is part of the audit trail.
- Protocol / registration A registered plan for a review or trial, not its results.
- Preprint Posted by its authors before peer review.
- Conference abstract A conference summary rather than a peer-reviewed paper.
- Peer-review report A referee's report on a paper, not the paper itself.
- Guideline / position stand A recommendation derived from evidence, which is a step further from the data than the evidence itself.
- Book chapter A chapter in a scholarly book rather than a journal paper.
- Type not recorded Our record does not say what kind of publication this is, so it is counted in no source count. That is a gap in our data, not a judgement about the research.