Pilates Fitness Friday: Strength vs Endurance Training

Pilates inspired plank position highlighting stability, endurance training, and controlled bodyweight strength work.

Walk into any fitness space today and you will hear the words strength, tone, and endurance used almost interchangeably. Clients ask for strength training when they mean a harder workout. Others say they want endurance but really mean they want to feel less tired. For Pilates teachers it is useful to understand the difference, because the Pilates method often sits in an interesting position between the two.

Strength training is usually defined as exercise that increases the ability of a muscle to produce force. In traditional strength training this is done with relatively heavy resistance and fewer repetitions. The load placed on the muscle is high enough that the muscle fibres must adapt by becoming stronger and sometimes larger. In the gym environment this is often achieved with barbells, dumbbells, or machines that allow progressive loading.

Muscular endurance is different. Endurance refers to the ability of a muscle to perform repeated contractions over time without fatigue. Instead of lifting very heavy loads, the resistance is usually lighter and the number of repetitions is higher. The goal is not maximal force production but the ability to sustain movement and maintain control over longer periods.

Pilates training tends to sit closer to muscular endurance than maximal strength training. Most exercises rely on body weight, spring resistance, and controlled movement patterns rather than very heavy loads. The springs on the Reformer or Cadillac provide resistance, but they also provide assistance and feedback. This means the muscles work continuously throughout the movement rather than producing a single maximal effort.

Tempo also plays an important role. In many Pilates exercises the movement is slower and more deliberate. Slower tempo increases the time the muscle spends under tension. Even when the resistance is moderate, longer time under tension can create a significant endurance challenge for the muscles and nervous system.

Bodyweight is another factor. Exercises such as planks, leg work, and arm work on the springs require the body to stabilise itself while producing movement. This develops coordination and muscular endurance, particularly in the postural muscles that support the spine and pelvis.

The Reformer springs add another interesting element because their resistance changes through the movement. The load increases as the spring stretches, which challenges the muscles differently compared with fixed weights in a gym. This variable resistance encourages control and precision rather than simply pushing against a constant load.

For Pilates teachers the key point is understanding what adaptation you are encouraging. A typical Pilates session develops muscular endurance, control, coordination, and movement efficiency. These are extremely valuable qualities for health and injury prevention. However, if a client’s goal is maximal strength or significant muscle mass, additional strength training outside of Pilates may also be beneficial.

Understanding this distinction helps teachers communicate more clearly with clients. Pilates is not trying to compete with heavy strength training. Instead it provides a method of training that builds control, endurance, and balanced muscular function. When combined with other forms of exercise such as walking, cardiovascular training, or strength work, it can form part of a well-rounded fitness programme.

Reference

American College of Sports Medicine. ACSM’s Guidelines for Exercise Testing and Prescription. 11th Edition. 2021.American College of Sports Medicine.https://www.acsm.org