An exoskeleton including a load handling system configured to be coupled to a person, said exoskeleton comprising: first and second leg supports (101, 102) configured to be coupled to a person's lower limbs and rest on a support surface during a stance phase; and an exoskeleton trunk configured to be coupled to a person's upper body, said exoskeleton trunk being interconnected to each of the first and second leg supports at respective hip joints (125, 126) to allow for flexion and extension between the first and second leg supports and the exoskeleton trunk about respective hip axes (128, 129); characterized in that the exoskeleton further comprises: a human power amplifier including: a first load shifting device including a first powered reel mechanism connected to a first line; a first end-effector located on the first line and configured to connect to a load; a first guide supporting the first end-effector in a position in front of the exoskeleton trunk; and a load shifting actuator for selectively operating the first powered reel mechanism to selectively raise or lower the first line with respect to the exoskeleton trunk; and a counterweight device including an auxiliary mass connected to the exoskeleton trunk through an actuator such that the auxiliary mass extends in a position behind the exoskeleton trunk, wherein said actuator is selectively actuated to shift the center of gravity of the auxiliary mass with respect to the exoskeleton trunk. first and second leg supports (101, 102) configured to be coupled to a person's lower limbs and rest on a support surface during a stance phase; and an exoskeleton trunk configured to be coupled to a person's upper body, said exoskeleton trunk being interconnected to each of the first and second leg supports at respective hip joints (125, 126) to allow for flexion and extension between the first and second leg supports and the exoskeleton trunk about respective hip axes (128, 129); characterized in that the exoskeleton further comprises: a human power amplifier including: a first load shifting device including a first powered reel mechanism connected to a first line; a first end-effector located on the first line and configured to connect to a load; a first guide supporting the first end-effector in a position in front of the exoskeleton trunk; and a load shifting actuator for selectively operating the first powered reel mechanism to selectively raise or lower the first line with respect to the exoskeleton trunk; and a counterweight device including an auxiliary mass connected to the exoskeleton trunk through an actuator such that the auxiliary mass extends in a position behind the exoskeleton trunk, wherein said actuator is selectively actuated to shift the center of gravity of the auxiliary mass with respect to the exoskeleton trunk. a human power amplifier including: a first load shifting device including a first powered reel mechanism connected to a first line; a first end-effector located on the first line and configured to connect to a load; a first guide supporting the first end-effector in a position in front of the exoskeleton trunk; and a load shifting actuator for selectively operating the first powered reel mechanism to selectively raise or lower the first line with respect to the exoskeleton trunk; and a first load shifting device including a first powered reel mechanism connected to a first line; a first end-effector located on the first line and configured to connect to a load; a first guide supporting the first end-effector in a position in front of the exoskeleton trunk; and a load shifting actuator for selectively operating the first powered reel mechanism to selectively raise or lower the first line with respect to the exoskeleton trunk; and a counterweight device including an auxiliary mass connected to the exoskeleton trunk through an actuator such that the auxiliary mass extends in a position behind the exoskeleton trunk, wherein said actuator is selectively actuated to shift the center of gravity of the auxiliary mass with respect to the exoskeleton trunk.