This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Joints, Subject name: Anatomy
[{'content': 'The kinetic energy of the body is least in one of the following phases of walking cycle; \nSelect and explain. \nA. Heel strike., B. Mid-stance, C. Double support, D. Toe-off', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is \'b\' i.e. MidstanceRef.: Gray\'s 38th/e p 898 & 899According to Gray\'s- "In walking each foot is on the ground (stance phase) for about 60% of the stride and off (swing phase) for about 40%. Thus single support phases (one foot on the ground) alternate with double support phases (two foot)."Gray\'s further states- "The speed and so the kinetic energy of the body passes through a maximum in each double-support phase and a minimum in each single support phase."Here are various phases of waling cycle:Double Support phases of the walking - Heel Strike cycle includes - - Foot flatToe flatSingle limb support phases of the - Mid stance walking cycle includes - - Heel offMid swingSo the answer is obvious now because the only single limb support phase in the question is mid stance.', 'role': 'assistant'}]