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We obtain asymptotic formulas for sums over arithmetic progressions ofcoefficients of polynomials of the form  $$\prod_{j=1}^n\prod_{k=1}^{p-1}(1-q^{pj-k})^s,$$ where $p$ is an odd primeand $n, s$ are positive integers. Let us denote by $a_i$ the coefficient of$q^i$ in the above polynomial and suppose that $b$ is an integer. We prove that  $$\Big|\sum_{i\equiv b\ \text{mod}\ 2pn}a_i-\frac{v(b)p^{sn}}{2pn}\Big|\leqp^{sn/2},$$ where $v(b)=p-1$ if $b$ divisible by $p$ and $v(b)=-1$ otherwise.This improves a recent result of Goswami and Pantangi.

On sums of coefficients of Borwein type polynomials over arithmetic progressions