In the present paper we study the compositions of the piecewise linear interpolation operator S Δ n and the Beta-type operator B ¯ n , namely A n := S Δ n ∘ B ¯ n and G n := B ¯ n ∘ S Δ n .

There are positive associations between pulmonary function (PF) and fat-free mass as well as muscle strength. Contrarily, negative associations were found with indirect measures of visceral adipose ...