Dance Anatomy & Kinesiology

49 The Influence of Moment Arms on Torque Perform the following movements while sitting or standing. Use of a long moment arm. ...

50 Dance Anatomy and Kinesiology the muscle force in producing desired rotation is greatly influenced by the angle of the muscle ...

The Muscular System 51 Dynamic Muscle Contraction Dynamic muscle contraction or tension occurs when there is a change in length ...

52 Dance Anatomy and Kinesiology the torque produced by the resistance is greater than the torque produced by the muscle, and th ...

The Muscular System 53 For example, an isometric contraction of the elbow flexors would be operative when one is holding the dum ...

54 Dance Anatomy and Kinesiology of the stretch-shortening cycle, the different roles muscles can play when they are acting simu ...

The Muscular System 55 FIGURE 2.14 Muscle roles in whole body movement (lateral view). agonists. In raising the leg to the back, ...

56 Dance Anatomy and Kinesiology Muscles as Force Couples The technical definition of a force couple is two forces that are equa ...

The Muscular System 57 suggest and as illustrated in figure 2.16, a single-joint (uniarticulate) muscle crosses only one joint, ...

58 Dance Anatomy and Kinesiology of its resting length, and this limit of shortening can readily be reached when a muscle is sho ...

The Muscular System 59 of these muscles that are more commonly known is provided in figures 2.19 and 2.20. These and other muscl ...

60 FIGURE 2.19 Selected major muscles and key actions—anterior view. Tibialis anterior (ankle-foot dorsifl exion, foot inversion ...

61 FIGURE 2.20 Selected major muscles and key actions—posterior view. (ankle-foot plantar fl exion) (ankle-foot plantar fl exion ...

62 Dance Anatomy and Kinesiology Latin and Greek roots provide the fol- lowing clues about a muscle: Action: adductor longus (a ...

The Muscular System 63 electrodes) to help record the electrical activity of muscles during various movements or conditions (see ...

64 Dance Anatomy and Kinesiology Electromyography Examples of EMG records of three muscle groups for danc- ers directed to stand ...

The Muscular System 65 sion. In contrast, the down-phase would be produced by gravity, and the knee extensors would be working e ...

66 Dance Anatomy and Kinesiology dumbbells, springs, elastic bands, or guided weight apparatus. In the case of the first three f ...

The Muscular System 67 When one is designing a stretching exercise for a given muscle, the approach is different. Here a positio ...

68 Dance Anatomy and Kinesiology toward the trunk to increase hip flexion and stretch intensity. In the advanced standing hamstr ...