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We prove amongs others results that the harmonic mean of $\Gamma_q(x)$ and$\Gamma_q(1/x)$ is greater than or equal to $1$ for arbitrary $x > 0$ and $q\inJ$ where $J$ is a subset of $[0,+\infty)$. Also, we prove that for there is$p_0\in(1,9/2)$, such that for $q\in(0,p_0)$, $\psi_q(1)$ is the minimum of theharmonic mean of $\psi_q(x)$ and $\psi_q(1/x)$ for $x > 0$ and for$q\in(p_0,+\infty)$, $\psi_q(1)$ is the maximum. Our results generalize someknown inequalities due to Alzer and Gautschi.

A harmonic mean inequality for the $q-$gamma and $q-$digamma functions