Daily cycling exercise improved sleep during inpatient cannabis withdrawal | Research

The takeaway

In a randomized trial of 31 cannabis-dependent adults, daily moderate-intensity cycling during inpatient withdrawal improved objective sleep duration and efficiency compared to a stretching control group.

People trying to quit cannabis, addiction treatment providers, and researchers studying non-pharmacological withdrawal management.

Cycling improved sleep duration (P = 0.005) vs stretching during withdrawal

What the researchers found

The cycling group showed improved sleep duration (P = 0.008) and sleep efficiency (P = 0.023) from baseline to treatment, while the stretching control group saw increased sleep onset latency. During treatment, cycling increased sleep duration (P = 0.005) and decreased average wake bout duration (P = 0.040) compared to stretching. Subjective sleep ratings did not differ between groups.

Why it matters

Sleep disturbance is one of the most common and distressing symptoms of cannabis withdrawal, often driving relapse. Finding non-pharmacological interventions that improve sleep during this critical period could support more successful cessation.

The numbers in context

31 participants (19 cycling, 12 stretching); 35 min daily exercise; ~60% VO2max; sleep duration P = 0.005 cycling vs stretching; sleep efficiency P = 0.023 improvement in cycling group

How the study worked

Randomized controlled trial with 31 cannabis-dependent adults (19 cycling, 12 stretching) during a 7-day inpatient stay. The cycling group performed 35 minutes daily at ~60% VO2max. Sleep was measured objectively using wrist actigraphy and subjectively using self-report across baseline, treatment, and post-treatment phases.

What this study cannot tell us

Small sample size (31 total). Unequal group sizes. Inpatient setting may not generalize to outpatient withdrawal. Subjective sleep ratings did not mirror objective improvements. Short treatment phase.

How to read the evidence

Small randomized controlled trial with objective outcome measures, though underpowered and inpatient-only design.

When this study was published

Published in 2021.

The bigger picture

Exercise is increasingly recognized as a viable adjunct to addiction treatment. This study adds cannabis withdrawal sleep disturbance to the list of conditions where moderate aerobic exercise shows measurable benefit.

Questions still open

Would the sleep benefits persist after discharge? Could exercise during withdrawal reduce relapse rates? What is the minimum effective exercise dose? Why did objective and subjective sleep measures diverge?

Common questions

Can exercise help with sleep problems during cannabis withdrawal?

This study found that 35 minutes of moderate cycling per day significantly improved objective sleep duration and efficiency during inpatient cannabis withdrawal, compared to a stretching control.

Did people feel like they slept better?

Interestingly, no. Subjective sleep quality ratings did not differ between the cycling and stretching groups, even though objective actigraphy showed clear improvements in the cycling group.

Read the original research

The effect of daily aerobic cycling exercise on sleep quality during inpatient cannabis withdrawal: A randomised controlled trial.

Journal of sleep research, 30(3), e13211

View on PubMed ↗Publisher’s paper ↗

Citation

McCartney, Danielle; Isik, Ashling D; Rooney, Kieron; Arnold, Jonathon C; Bartlett, Delwyn J; Murnion, Bridin; Richards, Elisha; Arkell, Thomas R; Lintzeris, Nicholas; McGregor, Iain S. (2021). The effect of daily aerobic cycling exercise on sleep quality during inpatient cannabis withdrawal: A randomised controlled trial.. Journal of sleep research, 30(3), e13211. https://doi.org/10.1111/jsr.13211