Complex sentence: From the decades of the 30's through the 70's, York Barbell dominated the Olympics scene with over 40 national championships and numerous Olympic Gold Medalists.
Split into simpler sentences: From the decades of the 30's through the 70's, York Barbell flexed its muscle with its Olympic lifting teams. The renowned York Barbell Club dominated the Olympic scene with over 40 national championships and numerous Olympic Gold Medalists.