Hockey players 🚨 Strengthen and lengthen your hip flexors with these two exercises from Sports Performance Coach @petkovperformance in Vadnais Heights. Weighted single leg knee raises strengthens Conner’s hip flexor range. Coach Nikolay cued him to keep his chest up and spine tall to avoid compensating with his upper core. To contrast, the ATG split squat focuses on strength through length. ATG split squats can improve muscular imbalances, which is common in hockey players who favor a strong side while skating.