-METHODOLOGY-

Methodology
The focus of this preliminary study was primarily on confirming if the measurement of arm span is related to a person’s height. A detailed experiment was done aimed at determining the effects of arm span and height.

A.Subjects
The study was conducted at Nanyang Polytechnic based on convenience sampling. There are 30 subjects in total for this study with 7 males and 23 females, ranging from 21 to 50 years old (mean age is 31.93 years old).

Inclusion Criteria
• Age: 21 - 55
• Ability to comprehend simple instruction
• Able to stand straight
• Able to keep arm at 90 degrees abduction to measure arm span.

Exclusion criteria
• Deformities that affect the height and arm (leg, spine, arm)
• Kyphosis

The subjects arrived at Nanyang Polytechnic, health science block, classroom K612 for the study. The purpose and procedure of the study was explained to subjects and verbal consent was obtained prior to commencement of data collection. 30 of the 30 subjects completed the study.

B.Equipment
Measuring tapes and metal tapes were used for measuring arm span and height respectively. 4 different types of measuring tape were collected and calibrate.

i.Set-up
The 4 measuring tapes were placed side by side at the tip of a straight paper evenly to check for accuracy. There are 0.05 cm differences after the comparison. The four measuring tape were then calibrated against the measuring scale in Nanyang Polytechnic’s gym.







C.Experimental Procedures
The subjects will be going through standing height measurement by twice by 2 different testers. After that subjects will go to another station to measure their arm span again twice by 2 different testers respectively. The purpose of measuring subjects twice by 2 testers is to eliminate biases and determining the level of agreement among raters, measuring the degree of correlation between them (Interrater Reliability)