If you are managing type 2 diabetes, combining aerobic exercise with strength training is the most effective way to lower your blood sugar. A large analysis of 1,301 participants shows that while any movement helps, focusing on specific exercise intensities yields the best results for your long-term health.
The power of mixing strength and cardio
When you are diagnosed with type 2 diabetes, the standard advice is almost always to just get moving. But if you are carving out precious time in your busy week to exercise, you deserve to know exactly which workouts give you the most return on your effort. Should you focus on steady cardio, or is it time to start lifting weights? Many people default to walking because it is easy and accessible, but science suggests we might be missing a massive opportunity by skipping the weight room.
A recent large-scale scientific analysis published in Frontiers in Public Health looked at 29 randomized controlled trials to find the answer. The researchers tracked 1,301 middle-aged and older adults with type 2 diabetes to see how different exercise routines affected their HbA1c, which is the standard measure of your average blood sugar over three months. The results show that you do not have to choose between cardio and strength training; in fact, the smartest strategy is to use both, with a particular focus on building muscle.
What the science actually shows
The study compared ten different exercise setups against standard care to see what actually moves the needle. The standout performer was high-intensity resistance training, which refers to lifting heavier weights for fewer repetitions. This style of training led to a 0.62% reduction in HbA1c compared to usual care.
If heavy lifting sounds intimidating, there is plenty of good news. Other exercise styles also showed strong benefits. Moderate-intensity aerobic training, like brisk walking or steady cycling, reduced HbA1c by 0.58%. Meanwhile, combining high-intensity aerobic exercise with moderate-intensity strength training reduced it by 0.54%. Even gentle, low-intensity resistance training achieved a 0.54% drop. This tells us that muscle tissue plays a massive role in clearing sugar from your bloodstream, regardless of how heavy you lift.
However, it is important to look at the certainty of this data. The researchers noted that the evidence for high-intensity strength training is of moderate certainty, while the evidence for the other combinations is of lower certainty. This means we can be reasonably confident in the strength training results, but the exact numbers for the other routines might shift as more research comes out. Additionally, because the study focused on middle-aged and older adults, these findings are highly relevant if you are in that age group, but younger individuals might experience slightly different metabolic responses.
What to do
- Start lifting weights twice a week. You do not need to lift heavy right away. Begin with bodyweight exercises like squats and push-ups, or use resistance bands, then slowly increase the resistance as you get stronger to challenge your muscles.
- Keep up your steady cardio. Aim for at least 150 minutes of moderate aerobic activity each week, such as brisk walking, water aerobics, or cycling, to keep your heart healthy and improve insulin sensitivity.
- Get your doctor's green light. Because high-intensity workouts put extra demand on your cardiovascular system and joints, check in with your healthcare provider before making sudden changes to your exercise routine.
Tracking your daily physical activity alongside your glucose readings in the Yesil BloodSugar program can help you see exactly how a brisk walk or a strength session impacts your numbers in real-time.
References- Comparative effects of different intensities of aerobic and resistance exercise on glycemic control and cardiorespiratory fitness in middle-aged older patients with type 2 diabetes: a network meta-analysis. Frontiers in public health (2022). doi:10.1016/j.jcjd.2022.11.005
- Comparative effects of different intensities of aerobic and resistance exercise on glycemic control and cardiorespiratory fitness in middle-aged older patients with type 2 diabetes: a network meta-analysis. Frontiers in Public Health (2026). doi:10.3389/fpubh.2026.1818686
This article is for general information and is not medical advice. Talk to your doctor before changing your diet, supplements, or medication.