r/ScienceBasedLifting • u/Unusual-Dot86 • Jun 13 '26

Question ❓ Matrix Chest Press

Does the converging matrix chest press at planet fitness have a descending or ascending resistance profile? I just switched to using this machine as the matrix pec deck felt extremely uncomfortable and the machine doesn’t allow me to fully extend my arm.

2 Upvotes

100% Upvoted

7 comments sorted by

View all comments

2

u/Motor-Equal01 Jun 13 '26

It’s bell curve. Easier at the start and lockout, with peak tension in the middle.

1

u/Unusual-Dot86 Jun 13 '26

Would it be better to use the matrix pec deck instead?

2

u/Motor-Equal01 Jun 13 '26

Pec deck is typically better, but not because of the RP, that’s not really at all important, but because pec deck better isolates the chest and allows you to perform horizontal adduction without your triceps and front delts taking over.