Final answer:
Assistive devices like crutches, braces, and wheelchairs aid individuals with mobility challenges and provide support where muscle strength is compromised. The use of these devices increases stability by widening the base of support and lowering the center of gravity.
Step-by-step explanation:
The tools mentioned such as crutches, axillary crutches, braces, cane, and wheelchair are assistive devices used to support and aid individuals with mobility challenges. Activities like swimming, where the body is not subjected to collisions or compressive forces, are often recommended because they are less strenuous on the body and can help prevent further injury. When additional support is required, braces can be used for the legs, ankles, knees, and wrists. For those with muscle weakness, devices like canes, walkers, or wheelchairs may be utilized to help with mobility and balance.
Understanding the concept of a center of gravity (cg) is important in grasping how these support devices increase stability. The center of gravity is lowered when the knees are bent and feet are spread apart to broaden the base of support, improving stability for activities like receiving a ball in football or preparing to tackle. Similarly, using a mobility aid like a cane or crutch broadens the user's base of support and thus increases stability. It's interesting to note that typically, the center of gravity is lower in females than males, and in young children, it is located between their shoulders, which makes learning to walk a challenging task.