Strength Training and Sleep in Older Adults
Two big reviews agree that strength training beats doing nothing about your sleep. They disagree on which kind wins, and the third paper works against my own morning schedule.
5.75-POINT SLEEP SCORE DROP — Strength training vs regular activity on the Pittsburgh Sleep Quality Index (0–21, lower is better) in adults 60+ with insomnia. 95% CI 3.45 to 8.06 — a wide range. Read it as a direction, not a promise.
Issue 20 was about the senses feeding your balance. This article is about the other thing that quietly decides how you feel at 6am: sleep. Strength training gets talked about for muscle and bone, and sleep research keeps hinting that it helps there too. Three papers below. The first says lifting ranks first. The second says a bigger review ranked it differently. The third has nothing to do with lifting at all, and it's here because it undercuts how I run my own mornings.
Strength training ranked first for sleep in older adults with insomnia
Family Medicine and Community Health, 2025
This is a systematic review and network meta-analysis of randomized trials in adults aged 60 and over with diagnosed insomnia (average age about 70). Sleep was scored on the Pittsburgh Sleep Quality Index, a 0–21 scale where lower is better.
Compared with regular physical activity, strengthening exercise lowered the score by 5.75 points (95% CI 3.45 to 8.06). Sleep education came in at 4.63 points (CI 2.15 to 7.12) and aerobic exercise at 3.76 points (CI 1.85 to 5.67). Strength training ranked first. Look at those intervals, though: they overlap heavily, so “ranked first” is not the same as “proven better than walking.”
The authors flag real limits: the trials varied a lot in design, many didn't report exercise intensity, and few tested specific exercise types. The comparison group was people staying regularly active, not couch sitters. And these were people with a formal insomnia diagnosis, not everyone who sleeps badly after a rough week.
A bigger review ranked it differently
Sleep Medicine Reviews, 2024
Hasan and colleagues ran another network meta-analysis, this one pooling 35 randomized trials and 3,519 older adults, comparing different exercise types on sleep quality. Resistance training alone did significantly improve sleep versus usual care. So the core claim holds up.
But the top-ranked option was muscle-endurance training combined with walking (88.9% probability of being best), which scored significantly above resistance training on its own, above walking alone, and above yoga, Pilates and tai chi. Tai chi, Baduanjin and CBT for insomnia also beat usual care.
Two reviews of the same question, two different winners. I could only read the abstract of this one, so I'm giving you the rankings and not effect sizes I couldn't verify. What both agree on: lifting beats doing nothing about your sleep. Which flavour of lifting wins is still open.
The finding that works against my own schedule
Sports Medicine, 2019
Most of my sessions run 5:30 to 9:20 in the morning, so here is the paper that cuts against the idea that timing matters. Stutz and colleagues pooled 23 studies on evening exercise and sleep in healthy participants. Their conclusion: the evidence “does not support the hypothesis that evening exercise negatively affects sleep, in fact rather the opposite.” Slow-wave (deep) sleep rose by about 1.3 percentage points.
The one real exception: vigorous exercise ending within an hour of bedtime may delay falling asleep and shorten sleep. And the authors note that most of the finer moderating effects disappeared when a single study was removed, so don't build a rule around the details.
Two cautions. These were healthy participants, not a room full of 78-year-olds with a new hip. And the paper gives me no reason to claim a 6am session sleeps better than a 5pm one. If an evening slot is the one you will actually keep, it is not hurting your sleep.
Matt's take
Read this first if you snore loudly, wake up gasping, or have been sleeping badly for weeks. Chronic insomnia, loud snoring with pauses in breathing, and unexplained exhaustion are medical questions before they are training questions. Sleep apnea in particular is common and treatable, and I can't screen for it from an article. See your physician. If a doctor has told you how to handle sleep, medication or exercise timing, their advice beats anything in this newsletter.
The honest bit: the headline here is “lifting helps sleep,” and I sell strength training. That is a conflict of interest and I'd rather say it out loud. So here is what the evidence supports and doesn't. Strength training beat usual care in both reviews. Which type wins depends on which review you read. The biggest number, 5.75 points, comes with an interval running from 3.45 to 8.06 and from people with formal insomnia, not everyone who had a rough week. And the third paper says I have no evidence that my 6am sessions improve your sleep over a 5pm one.
If you train before work and sit all day: the practical read is modest. Two or three strength sessions a week is already the plan for your muscle, your bones and your blood pressure, and sleep may be a bonus. Pick the time you will keep. If you train in the evening, finish the hard part at least an hour before bed and see how you sleep. Notice, don't assume.
If you're managing a real condition — joint replacement, cardiac history, a recent fall, post-rehab: nothing here changes your program, and I'm not going to promise you better sleep. If you're sleeping poorly, tell me and tell your doctor. Don't move your workout time, add sessions, or push harder in the hope of fixing it without clearing that with the person managing your care. In my sessions, intensity stays where it is. The sleep research is a reason to be consistent, not a reason to do more.
I'm a strength coach, not a physician or sleep specialist. Nothing here diagnoses a sleep problem or replaces your doctor's advice.
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This article first ran in the Forged Home Fitness weekly newsletter. It is general fitness education, not medical advice, and does not replace your physician.
