Final Answer:
Heel off phase of the gait cycle is characterized by single limb support. Option c is correct.
Step-by-step explanation:
The phase of the gait cycle characterized by single limb support is "c) Heel off." This phase marks the transition from stance to swing, where the heel of the foot on the stance limb lifts off the ground, initiating the swing phase of the opposite limb.
During the gait cycle, the stance phase consists of several sub-phases, including initial contact, loading response, midstance, terminal stance, and pre-swing. The "heel off" phase specifically occurs during the terminal stance, following midstance. Midstance involves both feet being on the ground, but as the body progresses forward, the heel of the stance limb lifts off during the heel off phase, signifying the shift towards the swing phase.
Understanding the gait cycle is crucial in biomechanics and rehabilitation, as it provides insights into the mechanics of walking. Observing the precise timing of events such as heel off helps in assessing gait abnormalities and designing targeted interventions. In clinical practice, this knowledge aids in diagnosing and treating conditions related to gait, ensuring a comprehensive approach to rehabilitative care.