Performing a high number of repetitions (10-15) with appropriate weight will develop muscular endurance and muscle tone. The seat height on the resistance machines has a great effect on the angle of your lift and should be adjusted to the proper number/height when you arrive at that machine. . The treadmills, bikes, and ellipticals (EFX) are considered cardio machines because using them increases heart rate. Playing a competitive game of Box Hockey involves both cardio and resistance. Using the fitness center equipment improperly could result in serious injury. Hypertrophy – Muscles getting bigger and stronger with use. Atrophy – Muscles getting smaller and weaker (usually from non-use). Concentric muscle contraction- the shortening phase of contraction. Eccentric muscle contraction – the lengthening phase of contraction. Match the muscles with their location on the body. D Tricep A. Covers back of neck __E_ Latissimus Dorsi (lats) B. Chest __B_ Pectoralis (pecs) C. Shoulder __A_ Trapezius D. Upper arm (posterior) __C_ Deltoid E. Back