The double limb support consists of which of the following?

The double limb support consists of which of the following?

• A. It occurs only during the running gait
• B. It occurs during the swing phase
• C. It involves nonstop contact of both feet
• D. It consists of two intervals of 10% each

Answer: (D)

Double limb support is the part of walking when both feet are on the ground. In a typical gait cycle, this happens twice, each lasting about 10% of the cycle, for a total of roughly 20% of the cycle. That’s why the correct description is two intervals of about 10% each. It isn’t about running, where double support is minimized or absent; it doesn’t occur during the swing phase when the leg is off the ground; and it isn’t a continuous, nonstop contact—there are two brief periods of simultaneous ground contact.

Double limb support is the part of walking when both feet are on the ground. In a typical gait cycle, this happens twice, each lasting about 10% of the cycle, for a total of roughly 20% of the cycle. That’s why the correct description is two intervals of about 10% each.

It isn’t about running, where double support is minimized or absent; it doesn’t occur during the swing phase when the leg is off the ground; and it isn’t a continuous, nonstop contact—there are two brief periods of simultaneous ground contact.