Maximal Effort Time

Maximal Effort Time measures how long you ride near your Maximum Power Available (MPA), indicating the intensity and depth of fatigue during an activity. More time near MPA means a stronger expression of your fitness, potentially updating your Fitness Signature in Xert.

Summary Generated via AI

Definition

Maximal Effort Time measures how long you spent very close to your MPA (Maximum Power Available) during an activity.

It is typically expressed in seconds (or mm:ss) and represents the amount of time you were riding at or near your physiological limit. The greater the max effort time, the deeper/harder into fatigue you went throughout your activity. 

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What It Means

Because riding at your absolute limit is rare (not to mention uncomfortable), most activities contain little or no time near MPA.

• If you spend very little time near MPA, the activity is considered sub-maximal, and your Fitness Signature remains unchanged.
• If you spend enough time near MPA (currently ≥ 5 seconds), Xert treats the effort as expressive of your fitness and may extract a new Fitness Signature via a Breakthrough or Near-Breakthrough. 

In simple terms:

The more time you spend near MPA, the more the activity reflects your true capacity as an athlete.

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Where You’ll See It

• On the Activity Details page
• In Progression Charts

Each circle in the Xert Performance Management Chart (XPMC) represents a Breakthrough or Near-Breakthrough performance. The vertical position corresponds to the athlete’s Threshold Power at the time of that activity, while the size of the circle reflects Maximal Effort Time - larger circles indicate longer time spent near MPA and a stronger expression of fitness.

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Related Terms

• MPA
• Fitness Signature
• Breakthrough
• Progression