An assistive flexible suit (100; 300) to be worn by a person, wherein the assistive flexible suit (100; 300) comprises: at least a first flexible anchor element configured for positioning at or near a first body part of the person, at least a second flexible anchor element configured for positioning at or near a second body part of the person, wherein at least one joint is disposed between the first anchor element and the second anchor element, at least one sensor (120; 316), at least one actuator (105; 314), at least one flexible and inextensible force transmission element coupling the first flexible anchor element and the second flexible anchor element, the at least one flexible and inextensible force transmission element operatively coupled to an output of the at least one actuator, wherein actuation of the at least one actuator generates tension in the at least one flexible and inextensible force transmission element at least between the first flexible anchor element and the second flexible anchor element, and at least one controller (200; 318) configured to: monitor an output of the at least one sensor (120; 316) as the person moves to identify, using the output of the at least one sensor, at least one gait event during the period of monitoring; actuate the at least one actuator (105; 314) according to an actuation profile responsive to the at least one gait event to apply a tensile force in the assistive flexible suit; adjust at least one of a trajectory, a timing, and a magnitude of the actuation profile of the at least one actuator; continue to perform the steps of monitoring and adjusting until the actuation profile of the at least one actuator (105; 314) generates a beneficial moment about the at least one joint; and implement the actuation profile to promote an improvement in gait. at least a first flexible anchor element configured for positioning at or near a first body part of the person, at least a second flexible anchor element configured for positioning at or near a second body part of the person, wherein at least one joint is disposed between the first anchor element and the second anchor element, at least one sensor (120; 316), at least one actuator (105; 314), at least one flexible and inextensible force transmission element coupling the first flexible anchor element and the second flexible anchor element, the at least one flexible and inextensible force transmission element operatively coupled to an output of the at least one actuator, wherein actuation of the at least one actuator generates tension in the at least one flexible and inextensible force transmission element at least between the first flexible anchor element and the second flexible anchor element, and at least one controller (200; 318) configured to: monitor an output of the at least one sensor (120; 316) as the person moves to identify, using the output of the at least one sensor, at least one gait event during the period of monitoring; actuate the at least one actuator (105; 314) according to an actuation profile responsive to the at least one gait event to apply a tensile force in the assistive flexible suit; adjust at least one of a trajectory, a timing, and a magnitude of the actuation profile of the at least one actuator; continue to perform the steps of monitoring and adjusting until the actuation profile of the at least one actuator (105; 314) generates a beneficial moment about the at least one joint; and implement the actuation profile to promote an improvement in gait. monitor an output of the at least one sensor (120; 316) as the person moves to identify, using the output of the at least one sensor, at least one gait event during the period of monitoring; actuate the at least one actuator (105; 314) according to an actuation profile responsive to the at least one gait event to apply a tensile force in the assistive flexible suit; adjust at least one of a trajectory, a timing, and a magnitude of the actuation profile of the at least one actuator; continue to perform the steps of monitoring and adjusting until the actuation profile of the at least one actuator (105; 314) generates a beneficial moment about the at least one joint; and implement the actuation profile to promote an improvement in gait.