Jim has trained in weighted jump rope, strength and conditioning, and Shotokan karate for decades. He developed JumpIron as a weighted jump rope exercise program for improving conditioning and strength-endurance.
• NSCA-Certified Personal Trainer (NSCA-CPT)
• Member, National Strength and Conditioning Association
• General and professional liability insurance through the NSCA Certified Professional Insurance program
• Shotokan karate black belt
• B.A. in Business and Japanese, Linfield University, McMinnville, Oregon
Jim performing assisted Nordic hamstring curls at the park as part of his strength training. The exercise requires controlled technique and progressive development of hamstring strength.