Weight-Assisted Dip and Pull-Up Station for Fusion 500 and 600 Personal Trainers
The Perfect Pull-Up Fitness Guide | The Art of Manliness
The Beginner's Guide to the Assisted Pull-Up Machine | Asphalt Green
How to do assisted pull-ups
3 Ways to Perform Assisted Pull Ups - wikiHow
Amazon.com: Heavy Duty Resistance Band for Pull Up Assist, Adjustable Weight/Size with Fabric Feet/Knee Rest for Strength Training, Patented Pull Up Assist Band : Sports & Outdoors