This study examined changes in medial gastrocnemius (MG) muscle-tendon interaction following 8 weeks of resistance training in 11 trained males. Following training, MG muscle elongation increased more than MG tendon elongation at hopping frequencies of 2.5 Hz and 3.0 Hz. While ankle joint strength increased, ankle joint stiffness decreased at these hopping frequencies. The results suggest that short-term resistance training disproportionately increases muscle strength relative to tendon stiffness, leading to greater reliance on the tendon during fast stretch-shortening cycle tasks.