This is Hidilyn Diaz. She won the Philippines’ first ever Olympic gold medal in the clean and jerk weightlifting category for the 55-kg weight division during the 2020 Tokyo Olympics. Give 5 examples of muscles with isotonic contractions and 5 examples of muscles with isometric contractions during the activity in the gif below.
Barbels in weightlifting have varying poundages to serve as a channel for measuring strength. Wherein, the ability to exert force and lift a certain amount of weight is a measure of one’s muscular strength. As Hidilyn Diaz bagged home the Philippines’ first ever Olympic gold medal in the clean and jerk weightlifting category for the 55-kg weight division during the 2020 Tokyo Olympics, both isotonic and isometric contractions were observed. Specifications for the aforementioned statement can be seen under the headings below:
A. Isotonic Contractions - alter the muscle's length in order to produce force.
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Biceps Brachii
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Brachialis
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Gluteus Maximus
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Rectus Femoris
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Triceps Brachii
B. Isometric Contractions - entail muscular contraction but no motion of the surrounding joints.
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Deltoid
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Latissimus Dorsi
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Pectoralis Major
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Quadratus lumborum
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Trapezius