Keiser strength machines are primarily known for their dynamic capabilities and being very joint-friendly - this makes them ideal for pro sports (NFL, MLB, NHL, NBA) and physical rehab facilities (for us mere mortals.) The Keiser AIR350 Biaxial Upper Back is a solid, quality, adjustable machine. Both its seat and chest pads are adjustable with plenty of positions available. While the footprint of this machine is rather large for what it can do, it certainly keeps me from wanting another row machine. Clearly, this machine can be filed under 'nice to have,' as you can replicate its chest-supported movements by using a 90-degree utility seat (or Prime Shorty, Exponent Edge Infinity, or Freak Athlete ABX bench) and a standalone functional trainer (preferably one with arms that move in 2 planes.) All Keiser strength machines (with either 2 or 5-window displays) will provide resistance & reps. On this machine, it displays the 'overall resistance' - meaning, you will need to divide the resistance shown on the display by 2 to determine how much resistance is being provided for each side.†† Since the max resistance for this machine is 350lbs (159kg), that means there are 175lbs max resistance available for each side.†† The weight can be adjusted in 1lb/1kg increments, again, divided by 2 = 1/2lb per side.†† As with most of my machines, I purchased this one used, as part of a package deal for 3 Keiser machines from a bankrupt school only 15 minutes away. NOTE: Later on, Keiser decided to fold their 3 "AIR350" designated machines (Biaxial Upper Back, Biaxial Chest Press, Seated Butterfly) into their A300 lineup of machines. More recently, these 3 machines are also available within their A400 series as well.
††the word 'side' was used (and not 'arm') as this machine was designed for back development. That said, one could easily end-up using their arms (more than is required, unintentionally) if the back exercise is not executed properly.
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