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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 ]
A jackknife is an abdominal exercise. This exercise is also known as a "V-Up". Jackknife exercises are designed to strengthen the upper and lower abdominal muscles, particularly the transversus abdominis muscle. There are a number of variations of jackknife exercises that allow people of different ages and ability to work their abdominal muscles.
The hamstrings, a muscle group at the back of the thigh, also get a workout. "During jumping jacks, the hamstrings control the knee movement and provide the effort needed to jump," Thompson says.
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.
Combine a pull-up with the jump or do a pull-up instead of the jump. [citation needed] Side burpee The athlete bends at waist and places hand shoulder-width apart to the side of right or left foot. Jump both legs out to side and land on the outer and inner sides of your feet. Jump back in, jump up, and repeat on opposite side. [citation needed]
This is a compound exercise for the pectorals. Other muscles worked include deltoids, triceps, and forearms. Equipment: dumbbells, cable machine or "pec deck" machine. Major variants: incline ~ (more emphasis on the upper pectorals), decline ~ (more emphasis on the lower pectorals), cable crossover. Cable crossovers; Dips