What is TSS (Training Stress Score)? Management of fatigue is essential for triathlon training!

日本語サイトはこちらです。
TSS(Traning Stress Score)とは?トライアスロンのトレーニングには疲労の管理が必須!

The original text on TSS explanation is here.

What Is TSS?

Normalized Power, Intensity Factor and Training Stress Score

“I think that you can understand if you read these, but since it is in English, it is patient to read.
It’s tough, so I pick up the necessary parts and explain it. I wrote it in Japanese, but I will translate the Japanese commentary into English.

That is, it is a summary of the original site.

The definition of Training StressScore®(TSS®)

We define the degree of fatigue at that time as 100 TSS when we exercise all out as a 60-minute training exercise (completely exhausted and we can not exercise anymore).

Actually most of the training can not be completed in all out, so it will be less than 100 TSS per hour.

By lowering the strength of training and extending the time, you can earn over 100 TSSs in one training.

However, the TSS per hour never exceeds 100.

If exceeded, it means that the reference value is low. In this way proper fatigue management can not be done. It is necessary to review the reference value.

 

You can move for a long time by lowering the intensity.

And if the same TSS is used for “short time high strength” or “long time low strength”, the degree of fatigue is interpreted to be equivalent.(However, the effect of training differs.)

Scope of TSS

TSS can be applied to all durable sports such as triathletes, cyclists, runners, swimmers.

In other words, TSS value can be assigned to training including power, pace or heart rate data.

And even if the events are different, you can understand the same degree of fatigue if the TSS is the same.

How to understand training stress score (TSS®) per day

TSS less than 150 – low (recovery is almost completed by next day)
150-300 – Moderate (Although fatigue may be left on the next day, you can get tired on the second day)
300-450 – High (There may be some residual fatigue even after 2 days)
450 or more – very high (residual fatigue that may last several days)

Likewise using cumulative TSS / week or month helps to identify the maximum intensity and maximum amount of training that has room for improvement, not over training.

See you soon.

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