In hyperactive children the arms must first be restrained by holding them tight in our hands. Montessori Elementary Materials Maria Montessori We must stimulate the apathetic and the sluggish; we must moderate the hyperactive; we must correct paresis, tics, etc.
Isotonic contractions are those which cause the muscle to change length as it contracts causing movement. There are two types of isotonic contraction: -. Concentric. A concentric contraction is a type of muscle contraction in which the muscles shorten while generating force.
n a muscle contraction in which the muscle length (shortening or lengthening) changes against a counterforce less than that of the contraction thus resulting in movement.sotonic contraction muscle contraction without appreciable change in the force of contraction; the distance between the origin and insertion becomes lessened. lengthening contraction eccentric contraction.