Handgrip Strength Lab

Introduction

In lab, isometric handgrip strength was tested. Isometric strength refers to the type of force that occurs when muscles generate force, but its length remains unchanged. This can also be called a static muscle contraction. A static contraction occurs when one tries to lift an object that happens to be heavier than the force applied to the muscle or a static contraction occurs when one supports the weight of an object by holding the object steady with the elbow flexed. In both of these examples, the person feels their muscles tense but the joint does not move (Kenney, Wilmore, & Costill, 2012). Handgrip strength reflects the importance for successful performance in activities of daily living and occupational activities (Beam &

Taking a measure of strength as a function of some other criteria would be defined as relative strength. Typically, males are stronger than females, they have 50% more upper body and 30% more lower body strength. However, relative testing’s show no difference between genders (Kenney et al., 2012).

There are two different areas that are important for testing handgrip strength, those are anatomical and physiological. Anatomically, grip strength and muscle mass are related with a correlation factor (r) = 0.60. Handgrip strength develops mainly as a function of the muscles in the forearm, as well as the muscles in the hand. Physiologically, grip strength participants reach peaks of 0.3 s to 2.7 s. These results help to show that the energy pathway involved in maximal muscle strength comes from the phosphagen system, which is the primary biochemical reaction for strength. (Beam & Adams 2014). The purpose for monitoring handgrip strength is to be able to make an accurate prognosis and diagnosis of neck and hand injuries. The measurement of handgrip strength has implications for people’s safety and neuromuscular assessment (Beam & Adams, 2014). For the experiment, hypothesis predicts that males, on average, have greater absolute and a lesser maximal forced

Pain can be classified as type 1 muscle strain and varies from muscle stiffness to severe which is pain that restricts movement (Kenney et al., 2012). One of many theories is that eccentric action happens to be the primary initiator of DOMS. Eccentric action refers to the muscle lengthening when an external force gets applied to the muscle that exceeds the force of the muscle. There have been studies that compare soreness between those that train with solely eccentric, concentric, and static actions. While DOMS does have a negative effect on strength performance, the factors that are associated with DOMS are also potentially important in stimulating muscle hypertrophy. Researchers believe thought that DOMS most likely reflects the body’s response to maximize the training response. Due to the wear and tear on the muscle fibers during exercise, muscle damage happens to be the causing factor for muscle hypertrophy. After exercise, the damage and repair process involves calcium, lysosomes, connective tissue, free radicals, energy sources, and the inflammatory response. Healing process steps that go along with DOMS are important steps in muscle hypertrophy (Kenney et al.,