“…Passive or in-bed strength exercises include strengthening and reconditioning exercises in the supine position, such as ankle pumps, heel slides, upper extremity stretching, and a range of motion exercises [53], exercises in the sitting position on the edge of the bed to strengthen the torso, upper extremities, and lower extremities such as leg lifts, ankle rolls, and arm lifts [53], sitting in the bed or at the edge of bed, standing, functional electrical stimulation cycling in quadriceps, hamstrings, and buttocks bilaterally [65], and generally a various range of motion at the bedside [72,75,77]. On the other hand, active or out-of-bed strength exercises include muscle training of the lower extremities, such as dynamic quadriceps training by leg press, bed bike, or squats from sitting position and bed-to-chair mobilization [61], active exercises with elastic bands, mini-leg press [70], sit-to-stand transfer activities and functional strengthening using sit-to-stand from the bed or chair [72], stand-pivot transfers or taking small steps from the bed or chair with purpose to transfer to another surface [72], standing activities such as standing balance and tolerance, strengthening, weight shifting, marching, and stepping in place [72], active upper and lower limb and endurance exercises [74], or weight training of the upper limbs [77]. Intensity and the number of repetitions of strength exercises are usually individualized for each patient separately, according to his/her functional status and the stage of rehabilitation after evaluating maximum muscle strength of the muscle training group with one repetition maximum (1 RM) and/or handgrip and handheld dynamometers assessment.…”