and competitive runners were put to the test. After initial evaluation of ground reaction forces, lower-extremity stability scores and 5,000m running performance, half participated in a six-week core strength training programme while the other half did not. All
crunches, you may find you have slipped into a routine. "You need to constantly challenge your muscles to get results," says running coach Sam Murphy, co-author of Running Well (Human Kinetics Publishers; £14.99). The fix Mix it up. Fine-tune your
