IB SEHS Topic 6.1-6.3

evaluate

form a balanced review considering strengths and weaknesses

Error bars

graphical representation of variability of the data

Reliability

if you repeated the test again are you likely to get similar results

Balance

stability of body

Anthropometry

study of measurements and proportions of the human body

Standing Broad jump

Measures leg power. To do this test, you jump as far as you can.

Specificity

Measuring the skills needed for a sport can see how well the athlete can maintain that skill when repeatedly doing it.

Sit and reach test

Tests the flexibility of a person in the lower back and hamstring muscles.

Agility

The ability to change direction at speed with control

Body composition

The relation of fat mass to fat free mass (bones, muscles etc)

Control group

a bunch of people are put into a group that doesn't get any special treatment for the experiment.

PAR-Q

a questionnaire that makes sure the participant doesn't have any health issues that will put them in danger in the experiment

Standard Deviation

a spread of scores around the mean

Stork

This test determines a person's balance. To test this the experimenter has the person stand on one foot with hands on their hips

Why is it important to have an control group?

To see if your hypothesis correlates with the data collected and overcoming learning problems

r value = -1

a strong negative correlation

r value =+1

a strong positive correlation

Double blind experiment

both the participants and the experimenters are unaware of who is in the experimental or control groups. This is to make sure that neither party influences the results.

one standard deviation of the mean

68%

two standard deviations

95%

three standard deviations

99%

Placebo

A harmless substance given to the participants in the controlled group. The substance won't affect the person's performance during the experiment.

coefficient of variation

A measure of relative variability computed by dividing the standard deviation by the mean and multiplying by 100.

correlation

A measure of the relationship between two variables

Multi-stage fitness test

AKA the Beep test. Participant runs increasingly faster in 20 meter shuttles until they're exhausted

Accuracy

Checking if the instruments you're using in an experiment are working properly

State why standard deviation is useful

Displays the consistency of each sample

Validity

Does the test actually test what is tests

Sub-maximal Test

For people who are afraid or aren't knowledgeable of pushing their limits. Good for children and the elderly

Sit up test

Measure the strength and endurance of your stomach and hip-flexor muscles

qualitative data

Information describing color, odor, shape, or some other physical characteristic

Maximum push up test

Participant does as many push ups as they can with no time limit. This measures upper body strength and enduranc

Cooper 12 minute run test

Participant run/walk as fast as they can in 12 minutes.

Blind experiment

Participants in the experiment don't know which group they are in. If the participants know what they are getting, it will defeat the purpose of the experiment

Randomized groups

People of various skill levels are put in different groups by random. This is to ensure that we don't favor one group over another.

Muscular endurance

ability of a muscle(s) to maintain force or power

Muscular strength

ability to generate force using muscle(s)

Flexibility

ability to move through a full range of movement around a joint

Reaction time

duration between presentation of a stimulus and associated response

Speed

change of distance with respect to time when movement occurs

overlapping of error bars

data is not significant

a p-value less than .05

data is significant

r value =0

no correlation

quantitative data

numerical data

Power

rate of doing work, speed + strength

Maximal Test

testing for a person's maximum ability. Used for people who are physically fit

Harvard Step Test

testing the participant on heart rate recovery after performing the task.

Handball toss

tests hand eye coordination using a ball to throw against the wall and catching it with your opposite hand repeatedly

Coordination

the ability to use different parts of the body together smoothly and efficiently

t-test

used to determine if two sets of data are significantly different from each other.