Early exercise during steroid treatment for nephrotic syndrome did not raise non-remission

Design

Single-centre randomised controlled trial

Population

27 hospitalised adults in Japan receiving glucocorticoids for nephrotic syndrome

Primary outcome

Peak oxygen uptake at 6 weeks

Effect

Between-group difference 2.46 mL/kg/min (95% CI −0.12 to 5.03); non-remission RR 0.67 (0.27 to 1.70)

Adults admitted with nephrotic syndrome and starting glucocorticoids were randomised to early exercise therapy or standard care for six weeks.

Fitness improved within the exercise group, but the difference between groups narrowly missed statistical significance. Remission rates were not worse with exercise.

The trial is too small to be definitive, but it addresses a common worry: that exertion will worsen proteinuria. It supports getting patients moving rather than keeping them in bed.

• Peak oxygen uptake rose 3.5 mL/kg/min with exercise against 1.0 with standard care.
• The adjusted between-group difference of 2.5 mL/kg/min had an interval crossing zero.
• Non-remission at six weeks was not higher with exercise (RR 0.67, wide interval).
• Staying active may also help limit steroid-related muscle loss.
• Continue anticoagulation and oedema management as indicated alongside exercise.

Why it matters

Bed rest is still commonly advised in nephrotic syndrome, and deconditioning on high-dose steroids is a real harm.

Don't overread it

The trial had 27 patients, and the primary between-group difference was not statistically significant.

The statistics, in plain English

An interval from −0.12 to 5.03 just includes zero, so chance cannot be excluded. The non-remission interval is very wide, so the trial cannot rule out a small harm or benefit.

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