The AE120XL The AE120XL PedometerPedometerThe AE120XL The AE120XL PedometerPedometer

A simple objective device to measure

physical activity in the Strong Heart Family

StudyKristi L. Storti, MS, MPHKristi L. Storti, MS, MPHUniversity of Pittsburgh

Graduate School of Public Health

Division of Physical Activity Epidemiology

Why Use A Pedometer to Why Use A Pedometer to Assess Physical Activity?Assess Physical Activity?Why Use A Pedometer to Why Use A Pedometer to Assess Physical Activity?Assess Physical Activity?

Correlate moderately with Correlate moderately with different estimates of energy different estimates of energy expenditure (median r=0.49)expenditure (median r=0.49)(Bassett 2000)(Bassett 2000)

Correlate strongly with different Correlate strongly with different accelerometers which are accelerometers which are considered the “gold standard” of considered the “gold standard” of objective activity monitoring objective activity monitoring (median r=0.84-0.93) (median r=0.84-0.93) (Leenders (Leenders 2000)2000)

StrengtStrengthshsStrengtStrengthshs

Objective Assessment of Physical Objective Assessment of Physical ActivityActivity

Not subject to participant’s Not subject to participant’s inability to accurately recall inability to accurately recall activityactivity

Ability to measure lower intensity Ability to measure lower intensity physical activity which is often physical activity which is often harder to recallharder to recall

Can be used across different Can be used across different populations (i.e. adults, children)populations (i.e. adults, children)

WeaknessWeaknessesesWeaknessWeaknesseses

Cannot get wetDoes not accurately measure some

activitiesBicyclingArm Movement

Becomes less accurate in obese and slow gait speeds

Can’t provide information on activity type

Activities that move Activities that move away from away from walking/runningwalking/running

Wearing the Wearing the PedometerPedometerWearing the Wearing the PedometerPedometer

•Should be fastened to a belt or waistband, in the midline of the thigh.

•Worn on the hip in an upright position and held firmly against the body.

•When correctly positioned, it does not matter what side of the body the pedometer is worn on, unless the person has a gait abnormality..

General Pedometer General Pedometer InstructionsInstructionsGeneral Pedometer General Pedometer InstructionsInstructionsThe pedometer should be wornduring all waking hours of the day.

1. Every morning, the pedometer should be zeroed “0” out before putting it on.

2. The time that the pedometer was put on should be recorded in seven-day pedometer record.

3. The pedometer should be worn all-day from the time the participant gets up to the time that they go to bed except when bathing or participating in water activities.

4. The monitor should be removed at night just before bedtime and the number of steps/day on the pedometer along with the time it was removed should be recorded in the seven-day pedometer record.

General Pedometer General Pedometer InstructionsInstructionsGeneral Pedometer General Pedometer InstructionsInstructions

Pedometer “Step Test” Pedometer “Step Test” for Accuracyfor AccuracyPedometer “Step Test” Pedometer “Step Test” for Accuracyfor Accuracy Have the participant put

on the pedometer and find a space where they can walk at their typical walking pace.

Have the participant put on the pedometer and Reset the pedometer to “0”and close the cover.

Have the participant walk 20 steps.

Carefully open the cover and determine the number of steps on the pedometer.

Determining Accuracy

Perfect = 20 steps Good = 19 or

21steps (± 5% error)

Acceptable = 18 or 22 steps (± 10% error)

Unacceptable = ≤ 17 or ≥ 23 steps

What if?What if? What if?What if? The monitor is not working properly

A. Check positioning 1. If necessary have the participant move the

pedometer to the small of the back2. Make sure the pedometer is upright3. Repeat 20 step test

B. Change clothes 1. Make sure that the participant is wearing snug

fitting clothing2. If possible, have participant wear a belt3. Repeat 20 step test

C. Go through the instructions

What if?What if?Participant is sick during the week

they are to wear the pedometerAsk the participant to wear the pedometer after they have gotten over their illnessIf participant is having surgery or has an injury, try to delay the assessment period until cleared by physician or has completed their recovery period

What if?What if?Participant only wears the

pedometer 3 daysIf possible, have the participant finish the week outTry to have the participant complete 7 full days

Front View Side View

THE STRONG HEART – FAMILY STUDYGENETICS OF CARDIOVASCULAR DISEASE IN AMERICAN INDIANS

DIRECTIONS TO PARTICPANTS FOR USING THE PEDOMETER

SPECIFIC INSTRUCTIONS1.Every morning, just before you put the pedometer on, push the YELLOW reset button so that the pedometer resets to “0”.2.Record the time that you attached the pedometer in your pedometer record. Make sure to indicate am or pm.3.Wear the pedometer on your hip (please see pictures above), make sure to keep it upright, and make sure that it remains firmly in place against your body.4.Wear the pedometer ALL DAY except when bathing, swimming, or in the rain (unless the pedometer is protected by clothing and will not get wet). If you take off the pedometer for longer than 30 minutes, record the length of time it was off (minutes or hours) in your pedometer record.5.At bedtime, take off the pedometer. Record in your pedometer record (a) the number of steps taken on the pedometer, and (b) the time you removed your pedometer. Make sure to indicate am or pm.6.Please do not touch the YELLOW reset button during the day or you will erase your activity numbers.7.Keep the cover closed or the pedometer will not record your activity.8.Do not wear the pedometer in a pants, coat, or shirt pocket. The pedometer will not work correctly. 9.Please bring back or mail to us, in the self-addressed stamped envelope, the pedometer record after you have completed your week.10.Please keep the pedometer as a token of our appreciation for your participation in the Strong Heart Family Study.

The ACCUSPLIT Pedometer measures movement. You are being asked to wear this pedometer EVERY DAY for a seven-day period from ______________ to ______________. The pedometer is worn on the hip and should be clipped to the waistband of your pants/skirt, underwear, or belt. Most importantly, the pedometer must be worn in an upright position. Please keep the pedometer firmly against your body so it does not move around freely. DO NOT LET THE PEDOMETER GET WET by wearing it in the rain or while bathing or swimming. Please remember to reset the pedometer to “0” (zero) when you put it on in the morning and to record the number of steps from the pedometer in your activity record when you take it off at night.

If you have any questions, please contact _________________ at ______________________.

REMINDER: RESET THE PEDOMETER TO “0” EVERY MORNING

Day 1 Day 2 Day 3 Day 4 Day 5 Day 6 Day 7

Date

Day of week

Time attached (am/pm)Please circle either am or pm

am pm

am pm

am pm

am pm

am pm

am pm

am pm

Pedometer steps at bedtime

Time removed (am/pm)Please circle either am or pm

am pm

am pm

am pm

am pm

am pm

am pm

am pm

Did you take off the pedometer for any reason for longer than 30 minutes?Please circle “Y” for yes or “N” for no.

Y N Y N Y N Y N Y N Y N Y N

If yes, for how long (indicate minutes or hours)?

Complete this question after completing the pedometer record.

Have your physical activity levels in the past seven (7) days been typical for you compared to your regular activity level? Yes____ No____

Name: ____________________________________

SHS Family I.D.: |___|___|___|___|___|___|___|

SHS I.D.: |___|___|___|___|___|___|

THE STRONG HEART – FAMILY STUDYGENETICS OF CARDIOVASCULAR DISEASE IN AMERICAN INDIANS

SEVEN-DAY PEDOMETER RECORD

Contact Information:Contact Information:Contact Information:Contact Information:Kristi L. Storti, MS, MPHUniversity of PittsburghGraduate School of Public HealthDepartment of Epidemiology515 Parran Hall130 DeSoto StreetPittsburgh, PA 15261 USAPhone: 412-624-0188Email: klsst75@pitt.edu