A 315-lb (143-kg) male collegiate American football offensiv…

A 315-lb (143-kg) male collegiate American football offensive lineman has the following test results: 40-yd sprint:                                  5.9 sec Body fat percentage:                  20% 1RM bench press:                      405 lb (184 kg) 1RM back squat:                        530 lb (241 kg) Which of the following areas should his training program emphasize?