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In modern cycling, performance is no longer limited to feel. The rise of power meters has profoundly transformed training, and one indicator has become a benchmark: FTP, or Functional Threshold Power. Behind this acronym lies a central piece of data for evaluating and improving one’s level.
By Guillaume Judas – Photos: depositphotos.com
FTP corresponds to the maximum average power a cyclist can sustain for approximately one hour without collapsing. Expressed in watts, it represents a physiological balance point between intense effort and sustained endurance. Beyond this threshold, muscle pain accumulates rapidly and becomes difficult to manage.
The term FTP (Functional Threshold Power) was not strictly “invented” by a single person on a specific date, but it is widely attributed to the work of American physiologist Andrew Coggan in the early 2000s.
The Origin of the Concept
It was at the turn of the 1990s and 2000s that power measurement began to become widespread in cycling, notably thanks to the appearance of the first sensors installed on bikes. In this context, Andrew Coggan, in collaboration with Hunter Allen, formalized the concept of FTP.
Their objective was then to create a simple, reliable, and directly usable indicator to structure training. They define FTP as the maximum sustainable power over one hour, closely linked to the lactate threshold.
The term FTP really began to gain popularity in the early 2000s, notably with the publication of their reference work, Training and Racing with a Power Meter, published in 2006. This book played a major role in disseminating the concept among coaches and practitioners. From then on, FTP gradually became a standard in road cycling, then in other disciplines such as triathlon and mountain biking.
Accelerated Adoption Through Technology
The rise of training platforms like Strava, or later Zwift or TrainerRoad for indoor trainer practice in the 2010s, strongly contributed to popularizing FTP among the general public. These tools automatically integrate tests and plans based on this data, making it accessible even to amateurs.
In the space of two decades, FTP has become a pillar of modern training. While other more recent indicators exist (such as Critical Power), FTP remains today the most widely used reference for evaluating and structuring performance in cycling.
Why FTP is Essential for Progress
FTP is not just a simple number. It is a real training management tool. By knowing it, the practitioner can structure their sessions with precision and adapt their efforts to their objectives. It notably allows for defining different intensity zones, each soliciting specific capacities of the body. This approach makes training more effective, by avoiding constantly riding at a medium intensity, which is often unproductive.
The Key Role of FTP
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FTP and Lactate Threshold: Understanding Physiology
FTP is intimately linked to the lactate threshold, the point at which the body begins to accumulate lactate faster than it can eliminate it. As long as the effort remains below this threshold, balance is maintained. As soon as it is exceeded, fatigue and muscle pain set in quickly.
This data therefore reflects the body’s ability to produce energy efficiently while delaying exhaustion. It depends on the cardiovascular system, muscles, and metabolic efficiency.
How to Easily Calculate Your FTP
Several methods exist to determine your FTP. The most commonly used is the 20-minute test, which consists of performing a maximal effort for this duration, then multiplying the average power obtained by 0.95. This protocol offers a reliable and accessible estimate.
Other options, such as the one-hour test or progressive indoor trainer tests like the one offered by Zwift, also exist. They allow for refining the measurement but require either more experience or specific equipment.
Warning: as we have already specified in several articles, power on an indoor trainer is not always the same as power on the road. There are not the same frictions, and even when using identical equipment (power meter), the results are very likely to be different in both cases. So, to avoid major training errors, we advise you to perform an FTP test on an indoor trainer for indoor trainer training, and an FTP test on the road, for road training.
How to Effectively Improve Your FTP
Increasing your FTP is based on a seemingly simple principle: exposing the body to adapted efforts to provoke physiological adaptations. In practice, this requires a structured and coherent approach.
Threshold work is the main lever. By regularly training at intensities close to your FTP, you accustom your body to sustaining this effort. Gradually, fatigue tolerance improves, and sustainable power increases. However, this approach must be complemented by more intense work aimed at developing VO2 max. By increasing the body’s maximum capacity to use oxygen, the threshold level is indirectly raised. Conversely, long, low-intensity rides allow for building a solid endurance base, essential for sustaining prolonged efforts.
The Essentials for Improving Your FTP
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The Importance of Recovery in Progress
An often underestimated point deserves particular attention: recovery. Contrary to popular belief, progress does not occur during effort, but afterward. It is during rest phases that the body rebuilds itself and becomes more efficient. Sleep plays a central role, as do nutrition and training load management. An imbalance in these areas can quickly slow down, or even block, any progress.
Common Mistakes to Avoid
In the quest for a higher FTP, certain mistakes are recurrent. Riding too often at a medium intensity, without a real objective, is one of the most common. This type of effort causes fatigue without generating significant adaptation. Conversely, neglecting endurance or accumulating intensive sessions without sufficient recovery can lead to overtraining. Finally, testing your FTP too frequently brings few benefits and can disrupt progress.
How Long Does It Take to Increase Your FTP?
Progress largely depends on the initial level and the regularity of training. Beginners can observe rapid gains in a few weeks, while more experienced practitioners must commit to a long-term approach. An improvement of 5 to 15% per year is generally considered solid progress. Beyond the numbers, consistency remains the most determining factor.
A Key Performance Indicator
FTP is now a cornerstone of cycling training. It offers a reliable measure of performance and a structuring framework for effective progress. By combining threshold work, VO2 max development, endurance, and recovery, every cyclist can hope to sustainably improve their abilities. More than just an indicator, FTP then becomes a true guide in building performance.
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