Dumbbells are an example of what type of training equipment?

Dumbbells are categorized as a constant resistance device because they provide a fixed amount of resistance throughout the entire range of motion during an exercise. This means that the weight of the dumbbell remains the same regardless of the angle of movement or position of the joint. When a user lifts a dumbbell, they are moving against this unchanging force, which allows them to apply and develop strength in a straightforward manner.

In contrast, variable resistance devices would alter the resistance based on the angle of the movement or the position of the user, providing greater resistance at certain points in the range of motion and less at others. Accommodating resistance devices, like resistance bands or certain machines, adjust based on the user's force output. Static resistance devices involve exercises where the muscle length stays the same, such as with isometric holds, and typically do not provide the dynamic movement commonly associated with dumbbell use. Thus, the classification of dumbbells as constant resistance devices accurately reflects their operational characteristics in strength training.