Analysis between the relation of thigh measure, person weight, and leg press performance in people between 16-20 years.

Centro de Desarrollo Integral Arboledas A.C.

INVESTIGATION

Analysis between the relation of thigh measure, person weight, and leg press performance in people between 16-20 years.

Edgar Iván García Campos
#4 6ºA
Methodology of Scientific Research
Prof. Adrian Vazquez
02/06/2008
INDEX

1. Abstract………………………………………………………………………………….3
2. Introduction……………………………………………………………………………...3
3.Justification…………………………….…………………………………………….....4
4. Objectives
4.1 General………………………………..……………………………………….4
4.2 Secondary……………………….……………………………………….…….4
5. Investigation questions………………………………………………………………...5
6. Variables………………………………………………………………………………...5
7. Theoretical Frame
7.1 Leg Press
7.1.1 Definition …………………………………………………………….6
7.1.2 Types ……………………………………………………………...…67.1.3 Injuries……………………………………………………………..6-7
7.2 Muscles
7.2.1 Definition…………………………………………………………..…7
7.2.2 Thigh muscles……………………………………………………….8
7.2.3 Relation with press……………………………………………….…9
7.2.4 Sports & thigh muscles…………………………………………..…9
7.3 Previous investigations…………………………………………………...9-10
8. Hypothesis………………………………………………………………………....10-11
9.Scope…………………………………………………………………………………..11
10. Methodology
10.1 Theoretical…………………………………………………………………..12
10.2 Practical…………………………………………………………………13-14
11. Results……………………………………………………………………………14-17
12. Conclusions………………………………………………………………………18-19
13. Further experiments…………………………………………………………………19
14. References………………………….………………………………………………..20
15. Appendix ……………………………………………………………………………..21
16.Letters…………………………………………………………………………….21-23
1. Abstract
This investigation will help coaches and people to know if the thigh measures affect their improvement and ability. The objective of this investigation is to analyze if there is a relation between the thigh measure, person weight, and leg press performance in people between 16-20 years. The experiment was done in a 45° leg press machine. The person’sweight, thigh length and circumference were measured before the experiment, with a balance and a metric tape, respectively. The people for the experiment were volunteer men. Each one started pushing the half of his weight and they did 1 series of 12 repetitions and then 10 Kgs were increased to do 1 more series. This continued until the volunteer could complete the series with the respectiveweight. The results of this experiment are that the variables are too related with the results. With this we can conclude: the greater the circumference and the heavier the person is, the better the performance. The length of the thigh has none or mostly significant relation with leg press performance. An average person should carry minimum his own weight and more, the people that can carry more than2 times his own weight are weird and the ones that can carry 3 times are too weird.

2. Introduction
This investigation topic was chosen because I am a person that likes to do exercise, so when I am not playing football, I go to the gym to continue doing some exercise so I don’t lose condition. One day I went to the gym and I found a friend that could do leg press with 260 Kg. this surprisedme and I wanted to see his legs, because I image that they will be a very strong and burly leg, but his leg was too similar to mine. So, I questioned myself why he can push 260 Kg and me only 140 Kg.
That’s why I made this investigation: to know which factors or variables are the ones that let people push more weight on leg press.

3. Justification
The thigh is one of the mostimportant parts of the leg because it is the one that provides the leg movement, therefore the human or person can walk. (1) Two types of leg press machine are in common use: the standard horizontal leg press and the 45 degree leg press. The 45º leg-press machine has a seat in which the body reclines at an angle and the leg press is in an upward diagonal direction using a sled...