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Mar 23 2018 08:15am
Research Hypothesis: The barbell hip thrusts will be significantly more effective in improving 100 meter dash times in male collegiate soccer players in comparison to the back squat.

Independent Variable: Back Squat OR Barbell Hip Thrusts (exercise group)
Dependent Variable: 100 meter dash time (time)

Participants: Male collegiate soccer players / Ages 18-22 / 22 participants in total (11 in Back squat group and 11 in Barbell hip thrust group)

Methodology:
Baseline data collected included: Height, Weight, 100 meter dash time, and 5 rep max for Back squat and Barbell hip thrusts.
Participants were then matched in pairs according to their most similar counterpart (based on the baseline assessments). Both of these individuals in every pair were randomly placed in either the Back Squat group or the Barbell Hip Thrust group (via a coin flip).
Participants in both groups did either Back squats or Barbell Hip Thrusts 3x a week for 6 weeks.
Participants were then assessed at the end of the research experiment in their 100 meter dash times.


So, my main questions are:
1.) Would this be considered an Independent Samples t-test?
2.) What type of statistical analysis would be done?
3.) Is there anything that I'm missing or that I should consider including?

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Thanks for your help. FG will be awarded to good help.

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Apr 3 2018 09:32pm
hmm ok since you're looking at the effects of improvement, the qualitative data you'll be analyzing is change in 100 meter dash times. so this could be any number: negative or positive or zero.

1. yes independent samples t-test, you have the back squat group, and the barbell hip thrust group as your independent categories, and your change in 100 meter dash times
2. check if the data for each category (change in 100 meter dash times) are normally distributed, if they are, use a T test to see if the data are significantly different after checking for equality of variances. If the data isn't normally distributed you'll want to use a Mann-Whitney U test. If analysis shows the change in 100 meter dash times are significantly different between your categories, use bloxplots to compare the differences.
3. to make this study even better, you might want to record 100 meter dash times throughout the experiment to see how it improves over time

there's one thing that should be changed though:
Both of these individuals in every pair were randomly placed in either the Back Squat group or the Barbell Hip Thrust group (via a coin flip).

should just say Individuals in every pair...

This post was edited by MOMOtheflyingLEMUR on Apr 3 2018 09:34pm
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