> For the complete documentation index, see [llms.txt](https://riduck.gitbook.io/riduck-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://riduck.gitbook.io/riduck-guide/english/troubleshooting/using-riduck/dramatic-ability-change.md).

# Recent Sudden Changes in Abilities

Recent changes in your abilities may require an updated FTP. We recommend conducting an FTP test if:

* Your performance has significantly improved in a short period due to effective training.
* Your performance has declined after an extended off-season (more than 12 weeks) due to factors like seasonal changes or injury.

For the following situations, use the FTP adjustment or training volume adjustment feature to fine-tune your training intensity or volume:

* Your performance has declined over a short-term off-season (within 12 weeks) due to injury or personal reasons.
* You've experienced a recent rapid change in body weight.