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1. Deltoids. Deltoids are a fancy term for "shoulder muscles." "The deltoids are located at the top of the arm and cover the shoulder joint," Julom explains. "When doing jumping jacks, the arms ...
Schoolchildren in the US performing jumping jacks. A jumping jack, also known as a star jump and called a side-straddle hop in the US military, is a physical jumping exercise performed by jumping to a position with the legs spread wide and the hands going overhead, sometimes in a clap, and then returning to a position with the feet together and the arms at the sides.
Plyometrics, also known as jump training or plyos, are exercises in which muscles exert maximum force in short intervals of time, with the goal of increasing power (speed-strength). This training focuses on learning to move from a muscle extension to a contraction in a rapid or "explosive" manner, such as in specialized repeated jumping. [1]
Patellar reflex. Schematic representation of patellar tendon reflex (knee jerk) pathway. The patellar reflex, also called the knee reflex or knee-jerk, is a stretch reflex which tests the L2, L3, and L4 segments of the spinal cord. Many animals, most significantly humans, have been seen to have the patellar reflex, including dogs, cats, horses ...
Jumping jacks mix cardio and resistance work in one swift move (er, jump), while engaging multiple muscles, including the glutes, hamstrings, quads, and calves, as well as the muscles of the core ...
Push-up. Animation of a full push-up (the wide positioning of the hands increases the push-up's use of chest muscles as opposed to arm muscles) Side view of a push-up. Push-up technique. The push-up (press-up in British English) is a common calisthenics exercise beginning from the prone position. By raising and lowering the body using the arms ...
Leg raise. The leg raise is a strength training exercise which targets the iliopsoas (the anterior hip flexors). Because the abdominal muscles are used isometrically to stabilize the body during the motion, leg raises are also often used to strengthen the rectus abdominis muscle and the internal and external oblique muscles.
The levator scapulae is a slender [1]: 910 skeletal muscle situated at the back and side of the neck. It originates from the transverse processes of the four uppermost cervical vertebrae; it inserts onto the upper portion of the medial border of the scapula. It is innervated by the cervical nerves C3-C4, and frequently also by the dorsal ...