Abstract: A pulling device for a foldable ladder joint, comprising: two inner bodies, having facing front surfaces, with aligned sets of three arc-shaped holes each along a circular path; an arc-shaped piece, inserted between the front surfaces of the two inner bodies, extended along the circular path and glidingly movable along the circular path, guided by pins or projections, which extend into the arc-shaped holes of the inner bodies; and a spring with two ends, which are held on a fixed position on one of the inner bodies and one end of the arc-shaped piece, so as to exert an elastic force on the arc-shaped piece along the circular path.

Abstract: An energy expenditure garment includes a body portion and limb portions made of a base fabric and incorporating at least one elastic resistance band which is free of any limb extremity anchor structure. The garment includes structure for retarding slippage of the garment during an exercise while still permitting some degree of slippage.