Short interval cycling improves function and enjoyment
In older adults with possible muscle loss, a 15-minute interval cycling program improved chair-rise performance more than longer moderate cycling and was more enjoyable.
*Assessor-blind randomized controlled trial; Level 1b (OCEBM).

Citation

Wang Q, Xu C, Cheng Y, et al. Effects of Low-Volume High-Intensity Interval Training on Physical Performance in Older Adults With Possible Sarcopenia: A Randomized Controlled Trial. Archives of Physical Medicine and Rehabilitation. 2026;107:1021-1030. doi:10.1016/j.apmr.2025.11.003

Background

Shorter exercise sessions may improve adherence for older adults at risk of age-related muscle weakness and functional decline. This trial compared brief interval cycling with longer moderate continuous cycling.

Patients

30 community-dwelling adults aged ≥60 years with “possible sarcopenia” (mean age 66; 67% women). Excluded: exercise contraindications, uncontrolled high blood pressure, serious heart/lung disease, or cognitive impairment.

Intervention

15-minute cycling interval sessions (5×1-minute hard efforts with 1-minute recovery), 3 days/week for 7 weeks.

Control

25-minute moderate continuous cycling, 3 days/week for 7 weeks.

Outcome

Primary: five-times sit-to-stand time (seconds; lower is better). Secondary: comfortable walking speed, handgrip strength, functional reach. Exploratory: exercise enjoyment scales.

Follow-up Period

7 weeks, plus 1 and 3 months.

Results

Outcome Timepoint Between-group difference (interval training minus moderate continuous)
Five-times sit-to-stand (primary) 7 weeks −0.57 seconds (95% CI, −1.10 to −0.04)
Five-times sit-to-stand (primary) 1 month −0.58 seconds (95% CI, −1.13 to −0.04)
Five-times sit-to-stand (primary) 3 months −0.58 seconds (95% CI, −1.13 to −0.02)
Comfortable walking speed 7 weeks +0.06 m/s (95% CI, 0.01 to 0.12)
Comfortable walking speed 3 months +0.07 m/s (95% CI, 0.01 to 0.13)
Physical activity enjoyment score During program +12.2 points (95% CI, 7.34 to 17.06)
Analyses were intention-to-treat with last observation carried forward for missing data.

Limitations

Small sample (30 participants) limits generalizability. Maximum heart rate was estimated, not directly tested. The between-group chair-rise advantage (~0.6 seconds) was smaller than a commonly cited minimal detectable change (1.6 seconds), so the practical difference may be modest.

Funding

Not reported; authors reported no conflicts of interest.

Clinical Application

Consider brief, supervised cycling intervals for older adults with early muscle weakness; gains were small but sustained and enjoyment was higher than longer moderate cycling.