I tried to find my 1rm on chin ups today and this is what happened: I got 105 for 1 but the second half of the movement was slow and hard. Then I tried 115 and got stuck exactly at 90 degrees. Is it a bicep weakness?
What assistance lifts should I do and what muscles should I focus to strengthen?
Almost forgot to mention that I did the multi-hold pump set for chin ups after that and the pump was out of this world. I have never felt a lat and biceps pump like that before. Even my chest got kinda pumped. Thank you for this novel method coach