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This makes it easy to increase or decrease the resistance as needed
4 Week SPEEDSTER Training Program
Powerful Stride
1 Nylon Webbing Leash with Wide Handle
Dual Resistance Trainer™ Accessories This makes it easy toAthletic Trainers Top Pick *** This product does NOT include Resistance Bungee*** An economical way two athletes work together to develop a powerful stride for the lead runner and eccentric leg strength for the trail runner. This product is designed to focus the front athlete on leg strength while training the back athlete in Overspeed to reprogram the muscle memory to run faster. This is an outstanding system to use at home by parents to increase the
