I sync HR with my Garmin FR-935 and sync that automatically to TP. Just HR. The rest you will have to do manually. TP allows you to track a multitude of metrics on a daily basis but for something like strain it may be better to log in workout comments.

If you have carried your phone for the workout and have GPS data captured, you will able to download a FIT File which can be uploaded to TrainingPeaks. You can login to your Web Dashboard to access the FIT File. Sample screenshot attached below.