The vertical grip does take some stress off the shoulder joint. I’m not sure it works the pecs any better, although I think it’s a better position to allow you to “squeeze” the pecs at the finish position. I’ve always coached any of our players or people I’ve trained that if you’ve ever had a shoulder issue, use the vertical grip on the chest press and the shoulder press. If you’ve never had an issue, use which ever one you like or feels better. But, if you switch from one grip to the other, you MUST change the seat height adjustment accordingly. The hands should always be in line with the lower chest. You should not use the same seat height for both handle grips. Hope that helps.
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