Stensvold D et al., BMJ 2020 (Generation 100, five years of exercise training and all-cause mortality in older adults)

PMID 33028588

Randomized trial: 1,567 adults aged 70–77 in Norway, five years of twice-weekly high-intensity interval training (~90% peak heart rate), moderate continuous training (~70%), or national activity guidelines. No difference in all-cause mortality for supervised training versus guidelines; intervals versus guidelines HR 0.63 (95% CI 0.33–1.20), intervals versus moderate HR 0.51 (0.25–1.02).