Endurance Training Simply Explained
Endurance training is movement that challenges the circulation over a longer period. This page summarises in simple words what studies show about it — and what remains open.
1. What It Is About
During endurance training the body moves steadily or in intervals over a longer period, for example when walking, jogging, cycling or swimming. The circulation works harder, breathing becomes deeper, and endurance grows over weeks.
Endurance training is one of the best-researched forms of exercise overall. There are very many controlled studies in humans, that is, investigations in which participants are assigned according to a fixed plan to a training group or a comparison group. Most of these studies deal with the musculoskeletal system as well as with cognitive performance and mood.
In the studies endurance training is often compared with strength training, with combined training or with calmer methods such as yoga. The results show that endurance training is effective in many areas, yet it is not the strongest form everywhere. Where it is particularly clearly effective is set out in the next section.
2. What Studies Show
The clearest effects appear with low mood and anxiety. A large summary of 63 reviews comprising 1079 individual studies and 79 551 participants found that exercise reduced depressive and anxious symptoms — and that endurance training produced the strongest effect 2. The analysis included children and adults, with mild as well as medically diagnosed complaints.
A second large review examined exercise in eleven medically defined mental disorders. Moderate to vigorous endurance exercise affected the respective main symptoms across all eleven disorders 1. This is the strongest indication that endurance training is effective not only for a single diagnosis.
In type 2 diabetes an analysis of 100 studies with 7195 participants examined how different forms of training influence the long-term blood-glucose value. All training types lowered it; combined training and interval training showed the strongest effect, followed by steady endurance training 3. Endurance training therefore contributes clearly here, yet it does not rank at the top.
In cancer a review of 49 studies with 4738 participants compared several forms of exercise against low mood. Endurance training achieved first place in the ranking 5.
In frail older adults endurance training improved frailty, mood, muscle strength, cognitive performance and quality of life in 44 studies with 4011 participants 7.
3. What Remains Unclear
The main open question concerns the right dose. How much endurance training is required and from what point additional benefit declines has not yet been clarified for most areas. For children and adolescents with depressive symptoms and for the period around childbirth there are initial indications of a minimum dose; for other areas comparable clear values are lacking 8 4.
It is also unclear how much endurance training contributes within a programme that contains several components. Many studies test endurance training together with other treatments, so the individual contribution cannot be read off 9 6.
A further point: in athletes with very high training volumes more calcification was found in the coronary arteries in men 10. Whether this implies higher risk has not been answered.
4. What This Means in Everyday Life
Anyone wishing to classify the study situation can note the following: endurance training is not a single measure with a single effect. It affects many body systems simultaneously, and how strongly it works depends on the group. Separate programmes have been examined for people with diabetes, after cancer therapy, in older age or during pregnancy.
The most reliable association is with mood and anxiety. For muscle strength strength training contributes more; for several other goals combined training ranks first. Endurance training nevertheless remains effective in almost all examined areas.
Training studies cannot be blinded: participants know whether they are training. Many programmes are also not carried out completely. This explains why results vary between studies.
All details with study numbers and sources: detailed page on endurance training (Aerobic Exercise). For children: endurance training (Aerobic Exercise) for children.
Frequently Asked Questions
What exactly does endurance training mean?
Endurance training is movement that challenges the circulation over a longer period, for example walking, jogging, cycling or swimming. In controlled studies it is also compared with strength training or with calmer procedures such as yoga.
Does endurance training work against low mood?
In the studies, depressive and anxious symptoms decreased, and endurance training performed most strongly 2. The largest analysis included 79 551 participants.
Is more training always better?
This remains open. For some groups there are initial indications of a minimum amount, but for many areas clear values are lacking. In athletes with very high training volumes, more calcification was found in the coronary arteries in men; what this means still needs to be clarified 10.
Why does endurance training not always rank at the top?
In several groups, combined training, group training or a body-mind procedure was stronger. Endurance training nevertheless worked in almost all areas examined.
Sources
- 1Solmi M, Basadonne I, Bodini L, Rosenbaum S, Schuch FB, Smith L et al. · 2025
- 2Munro NR, Teague S, Somoray K, Simpson A, Budden T, Jackson B et al. · 2026
- 3Michielsen M, Yagiz J, Hanssens M, Claes J, Geuns L, Gojevic T et al. · 2025
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- 6Li Y, Zhang X, Yang Y, Yun J, Yang X, Han D et al. · 2026
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- 10Abdelaziz A, Elshahat A, Gadelmawla AF, Desouky M, Hafez AH, Abdelaziz M et al. · 2025
Every statement on this page carries its evidence tier — proven, plausible or hypothesis — and leads to the original work. The decision in the individual case rests with the practitioner; we provide the connections.