Biomechanics of Elastic Resistance in Therapeutic Exercise Programs

Análise eletromiográfica do quadríceps durante a extensão do joelho em diferentes velocidades

“…The tb depends on the material's tensile strength and on the angle formed between elastic tube traction line and leg-foot segment (10). The values of elastic tube strength were obtained through a calibration process, according to described by Loss et al (11).…”

Avaliação mecânica da resistência de faixas elásticas

“…The elongation speed was set at 500 mm/min, which corresponds to an exercise carried out at a very low speed, simulating the optimal use of the elastic band in clinical practice 1 . Each die-cut test specimens was elongated once for 5 seconds on average.…”

“…Resistive elastic materials, such as bands and tubes, are low-cost and highly versatile tools often used in therapeutic exercise programs [1][2][3] . They are also convenient for patients to train at home using a variety of movement, including eccentric and concentric contractions 4 .…”

“…These studies had different objectives, such as: establishing the stress-strain relationship of 12 samples of elastic bands 1 ; investigating the relationship between force and percentage of change in length for six different colors of elastic tubes, by direct measurement of force and motion analysis during shoulder abduction exercise 2 ; measuring the resistance as a function of elongation in seven colors of elastic bands 10 , and quantifying the resistance ( force as a function of elongation) of six colors of elastic bands, allowing the construction of an index for color selection 11 . However, none of these studies 1,4,6,10 followed the technical standards necessary to carry out the tensile tests under controlled conditions (temperature, humidity, etc.) and thus determine the curves which show the correlation between the exerted force and the deformation caused in the material.…”

“…Additionally, the previously cited authors 1,4,6,10 suggest further research to study the biomechanics of the elastic material in mechanically controlled trials in order to determine the real resistance change as a function of elongation. Therefore, the present study aimed to investigate the elastic resistance, i.e.…”