An investigation into the relationship between age and physiological function in highly active older adults (LEGACY study)
Participants
n=125 highly and homogeneously active older cyclists (84 men, 41 women) aged 55-79 years, proposed as a model of human ageing free from the confounder of inactivity. The abstract does not state a minimum training history.
Protocol
Each participant underwent detailed physiological profiling: cardiovascular, respiratory, neuromuscular, metabolic, endocrine and cognitive function, bone strength, and health and well-being. The aim was to identify physiological markers of ageing by relating each index to age across the cohort.
Key Results
Significant associations between age and function were observed for many functions
Of all measures, VO2max tracked age most closely (r = −0.443 to −0.664; P < 0.001) — yet even for VO2max, people with the same value varied widely in age, so no marker could pin down an individual's age
Authors' conclusion: even with many confounders removed, the relationship between function and healthy ageing is complex and highly individualistic; physical activity level must be taken into account in ageing studies
The abstract makes no comparison with sedentary norms and gives no absolute VO2max values
Mechanism / Context
The design isolates ageing from inactivity by studying only very active people; what remains is the "true" age effect plus individual variation
Inference, not tested: the wide scatter at any age means a masters athlete's function is better predicted by their own trajectory than by their birth year
Practical Application
In 125 highly active cyclists aged 55-79, VO2max was the physiological index most tied to age (r −0.443 to −0.664), yet the spread was so wide that no marker could identify a person's age — ageing in trained people is real but highly individual. Benchmark a masters athlete against their own history, not against age norms.
Not from this paper; the base's own practice: keep training continuity into the masters decades and expect a gentler but real decline; strength work (REF-074) and protein (REF-348) are the levers the base uses alongside endurance training.
Health outcomes are profiled in the study but no health-benefit result is stated in the abstract.
Limitations
Cross-sectional → cannot establish causation between training and preserved function (survivorship / self-selection possible)
Mostly male cohort
Highly active amateur cyclists; less relevant to late-starters and not a sample of elite athletes
No sedentary comparison group in the abstract; claims of "shallower decline than sedentary" cannot be made from this paper
How this entry was checked and changed
Why this level
regraded 2026-09-27 from B: cross-sectional measurement study, n=125
Content correction 2026-09-27
"VO2max in 70-79 y/o ~40-45 mL/kg/min, equal to 30 y/o sedentary men", "substantially shallower decline than sedentary", "steeper decline after ~70", "≥20 years of continuous training" -> none in the abstract, which reports only the age–function correlations (VO2max r −0.443 to −0.664) and no sedentary comparison; removed.
Tier "4-5 Elite" -> Tier 2 (highly active amateur cyclists). Sport "cycling, running" -> cycling. Level B -> B+ (cross-sectional, n=125).