A chart illustrating the rate of injury from gym equipment and gym activities. The data is as follows: Free weights (resistance/ weight training) at 42.2% Exercise group class (spin class) at 15.9% Treadmill at 9% Boxing-related at 6.1% Dumbbells at 6% Squats, lunges, or deadlifts at 3% Bench press at 2.5% Exercise Bike at 2.4% Swiss Ball at 1.6% Barbells at 1.5% Others (Unspecified) 9.8%