Introduction to Laboratory Procedures (Data Analysis and Write-Ups)
Lab #1
EXSC 311: Fri 2pm Lab
Maya C. Henry Introduction: This lab emphases on the Cross Sectional Area (CSA) of an individual’s muscle, which is the area related to the amount of muscle. Typically a Cross Sectional Area is used to describe the contraction structures of pennate muscles (for example Biceps). Muscle contraction happens within a multitude of steps. Initially, acetylcholine (Ach) gets released from the axon terminal of a motor neuron which binds to receptors on the sarcolemma. Making an action potential to be generated and traveling down the T tubule. Calcium (Ca2+) is released from the sarcoplasmic reticulum and binds troponin exposing myosin binding …show more content…
Each subject’s would then squeeze the dynamometer with maximal isometric strength and hold this for approximately fix to six seconds. Once the subject released their maximal force, the measurements were observed by looking at the red dial which stays steady as the strength test came to a conclusion. After the dominant arm was tested, the investigators would repeat this process with their non-dominant arm. This test consisted of three trail runs, where the best result of the three trials was chosen for the class data …show more content…
REL Non-DOM HG kg/kg bwt.
Class 26.76045455 26.21681818 50.40909091 46.22727273 0.66 0.60
Males 28.26866667 28.04 59.46666667 54.26666667 0.73 0.66
Female 23.52857143 22.31 31 29 0.49 0.46

Table 2 above displays a means data chart of the six categories that the investigators collected. This chart above is the average measurement for both males and females and the class as a whole.

Table 3 above demonstrates the Effects of Training status on Dominant Hand Grip Strength and Dominant Arm Circumference. From observing the scatterplot, one will see that aerobic trained subjects had an excellent relationship between dominant strength and dominant circumference. Whereas anaerobic and untrained subjects did not have a good relationship. Table 4 above represents Dominant Hand Grip Strength vs. Dominant Circumference. From the results above, one will see that there was not a strong correlation between these two factors. Table 5 above represents Male vs. Female Absolute Dominant Hand Grip Strength. Results show that Males had a higher outcome with their Absolute Dominant Handgrip Strength than females.

Table 6 above displays a bar graph for Aerobic vs. Anaerobic Absolute Handgrip