If someone told you that resistance training is for building muscle, or if you’ve been thinking that it’s not relevant to diabetes management, this post shows what the evidence actually says. For adults with type 2 diabetes, resistance training is one of the most studied lifestyle interventions, and the way it works is biological.
01 . Why it matters
Why exercise is first-line for type 2 diabetes
Type 2 diabetes is one of the most common chronic conditions in Australia, with around 1.3 million adults living with the diagnosis and many more in the pre-diabetes range, according to Diabetes Australia. It is also one of the few chronic conditions where structured lifestyle intervention has been shown in a large randomised trial to be significantly more effective than medication for prevention.
In the Diabetes Prevention Program, researchers split 3,234 adults at high risk into three groups: a placebo group, a metformin group (taking the diabetes medication), and a lifestyle group (150 minutes of activity per week plus 7 percent weight loss). After about three years, the lifestyle group had a 58 percent lower rate of new type 2 diabetes cases than placebo. The metformin group had a 31 percent lower rate. So the lifestyle approach worked roughly twice as well as the medication in this study.
That trial is the reason every major peak body, including Diabetes Australia, the Royal Australian College of General Practitioners, and the American Diabetes Association, lists structured physical activity as a first-line intervention alongside diet for adults with pre-diabetes and type 2 diabetes.
For a deeper look at how dietetics and Exercise Physiology pair together as a combined service, see our companion guide: how dietetics and Exercise Physiology services help manage type 2 diabetes.
02 . How it works
How resistance training improves insulin sensitivity
Skeletal muscle is the body’s largest site for glucose disposal after a meal. When a muscle contracts, it pulls glucose out of the bloodstream on its own, without needing insulin to do it. Repeated training builds lean muscle mass, and that extra muscle stays good at pulling glucose out between sessions. Over time, this is what “insulin sensitivity” means: your muscles are better at managing glucose without insulin having to work as hard.
When researchers looked at 47 randomised trials of exercise training in adults with type 2 diabetes, they found that it lowered HbA1c by around 0.67 percentage points on average. Resistance training on its own gave 0.57 percentage-point drops. Aerobic training on its own gave 0.73 percentage-point drops. Both worked, and each worked through different pathways in the body.
A separate randomised trial recruited 251 adults with type 2 diabetes and assigned them to aerobic training, resistance training, both, or a no-exercise control over 22 weeks. The combined arm produced the largest HbA1c reduction, around 0.97 percentage points, and the effect was significantly larger than either modality on its own.
There is a second pathway too. Lean muscle burns energy even when you are not exercising. Building muscle lifts the energy your body uses at rest, which can help with weight goals over weeks and months. But this effect is slower than the glucose-pull effect from contracting muscle during a session. The blood-sugar benefit happens right after you train; the resting-metabolism benefit builds up over time as you stay consistent.
Skeletal muscle is the body’s largest site for glucose disposal after a meal.
03 . The dose
What dose of resistance training is recommended
The American Diabetes Association position statement is the most cited dose-response document and the closest international peer to Australian peak-body guidance. It recommends, for adults with type 2 diabetes:
- Resistance training: two to three sessions per week, on non-consecutive days. Each session covers the major muscle groups (lower body, upper body push, upper body pull, trunk). Eight to ten exercises per session, one to three sets each, eight to fifteen repetitions per set, working to moderate-to-vigorous effort.
- Aerobic activity: at least 150 minutes per week of moderate-to-vigorous intensity, spread over at least three days per week, with no more than two consecutive days without activity.
- Sedentary time: break up long periods of sitting with short bouts of light activity every 30 minutes.
Australian guidance from Exercise & Sport Science Australia (ESSA), the peak professional body for Accredited Exercise Physiologists, aligns with this dose. ESSA’s position statement on exercise and type 2 diabetes emphasises supervised, individually-prescribed programs over generic gym programs because individual factors (medication regimen, age, comorbidities, baseline fitness, hypoglycaemia risk) all change the safe and effective dose for any one person.
The numbers above are a target, not a starting point. For adults new to resistance training, the early weeks focus on movement quality, breath control, and a manageable load. The dose progresses as technique and tolerance build.
04 . Who it helps
Who benefits from resistance training for diabetes
Resistance training is appropriate for most adults with type 2 diabetes, including those who:
- Are newly diagnosed and looking to delay or avoid medication where appropriate.
- Are already on oral diabetes medication and want to improve glycaemic control alongside their current regimen.
- Are on insulin and want to reduce hypoglycaemia risk through more predictable post-meal glucose handling (this requires careful supervision and coordination with the prescribing doctor).
- Have additional cardiovascular or musculoskeletal risk factors and need a program that accounts for both diabetes and the comorbidity.
- Are older adults, where resistance training also addresses sarcopenia (age-related muscle loss) and falls risk.
Adults with pre-diabetes also benefit. The DPP study above, while built around general physical activity rather than resistance training specifically, established the principle that lifestyle intervention reduces conversion to type 2 diabetes. Resistance training contributes to that effect through its impact on body composition and insulin sensitivity.
There are populations where supervised programming is particularly important: pregnant women with gestational diabetes, adults with proliferative diabetic retinopathy (where heavy lifting can affect intra-ocular pressure), adults with peripheral neuropathy (where load-bearing exercises may need modification), and anyone with unstable cardiac disease. An Accredited Exercise Physiologist screens for these and adjusts the program accordingly.
05 . What a session looks like
What an Exercise Physiology session looks like
Accredited Exercise Physiologists are the discipline registered to prescribe exercise for chronic disease in Australia. Sessions can be funded under a Medicare Chronic Disease Management plan with a GP referral, through private health insurance, or through Department of Veterans’ Affairs and NDIS plans where eligible.
A typical first session at one of our Exercise Physiology clinics covers:
- History. Diabetes type, time since diagnosis, current medications, most recent HbA1c, hypoglycaemia history, comorbidities, current activity level, and what you want out of the program.
- Screening and baseline. Resting blood pressure, body composition where appropriate, basic strength and movement screen, balance and gait if older or at falls risk.
- Goal setting. What does success look like for you, measured against HbA1c, day-to-day glucose stability, energy, weight, function, or all of the above.
- First program. A two-to-three-session-per-week resistance template plus an aerobic plan that fits around your life. Loads start manageable. Progression is built in.
- Review cadence. Most clients review at 6 and 12 weeks. Programming, dose, and goals adjust based on what the data and how you feel say.
For adults whose diabetes management would benefit from combined dietetic and exercise input, our Dietetics team and Exercise Physiology team often co-manage with shared notes. The companion guide how dietetics and Exercise Physiology services help manage type 2 diabetes walks through the combined service.
To find a clinic near you, see our services and our team, or book directly via the bookings directory. If you are a GP or referrer, the referrers hub has the templates and clinic contacts.
Further reading
- How dietetics and Exercise Physiology services help manage type 2 diabetes. Combined-service framing for type 2 diabetes management.
- Exercise Physiology services at Optimum Health Solutions. The full clinical service overview.
- Dietetics services at Optimum Health Solutions. The dietetics side of diabetes management.
- Our team. Meet our Accredited Exercise Physiologists and Accredited Practising Dietitians.
