Human study · Supplements / medicine · 18 Oct 2026
In healthy adults averaging age 72, six months of intervals kept lean tissue while easier workouts did not
Source: University of the Sunshine Coast / Maturitas
What the research found
Study (exercise comparison). Grace Rose and colleagues at the University of the Sunshine Coast report in Maturitas (2025; 203:108763; DOI 10.1016/j.maturitas.2025.108763). Coverage of the same paper describes more than 120 healthy older adults, average age 72 and average body mass index 26, who trained in a gym three times a week for six months at high, moderate, or low intensity. All three intensities led to some fat loss. Only the high-intensity interval arm kept lean muscle; the easier arms showed a small loss of lean tissue. The public summary does not give a kilogram figure for that lean-tissue gap. This is one program in healthy older adults, not a prescription for people with heart disease or frailty. Not medical advice.
Evidence level: Human study. A study in people, but an association isn't proof of cause.
Read the original at University of the Sunshine Coast / Maturitas
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