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International Physical Activity Questionnaire – Long Form (IPAQ)
-7-day period-
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Script Author: Katja Borchert, Ph.D. (katjab@millisecond.com) for Millisecond Software, LLC
Date: 09-20-2023
last updated: 09-26-2023 by K. Borchert (katjab@millisecond.com) for Millisecond Software, LLC
Script Copyright © 09-26-2023 Millisecond Software
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BACKGROUND INFO
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This script implements Millisecond's computerized version of the International Physical Activity Questionnaire – Long Form (IPAQ).
The IPAQ is freely available.
more information as well as forms in several language available at:
https://sites.google.com/view/ipaq
Scoring protocol ('scoring_protocol.pdf'):
https://sites.google.com/view/ipaq/score
publicly available scoring script in R by M. Ponce-de-Leon:
https://github.com/Mariana-plr/IPAQlong/tree/main
(Note: Millisecond Software has no further knowledge of the accuracy of the implemented scoring criteria)
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DISCLAIMER:
This script runs Millisecond's best effort attempt to code summary variables such as
MET-scores and categorial assessment of physical activity (PAL score)
according to the guidelines outlined in 'scoring_protocol.pdf'
(downloaded at: https://sites.google.com/view/ipaq/score).
Coding may, however, still differ from intended purposes or contain errors.
If in doubt, manually score the obtained raw responses.
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References:
Booth, M.L. (2000). Assessment of Physical Activity: An International Perspective. Research Quarterly for Exercise
and Sport, 71 (2): s114-20.
Craig, C. L., Marshall, A. L., Sjöström, M., Bauman, A. E., Booth, M. L., Ainsworth, B. E., Pratt, M., Ekelund, U., Yngve, A., Sallis, J. F., & Oja, P. (2003).
International physical activity questionnaire: 12-country reliability and validity. Medicine and Science in Sports and Exercise, 35(8), 1381–1395.
https://doi.org/10.1249/01.MSS.0000078924.61453.FB
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OVERVIEW
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from webpage:
"The International Physical Activity Questionnaires (IPAQ) comprises a set of 4 questionnaires.
Long (5 activity domains asked independently) and short (4 generic items) versions for use by
either telephone or self-administered methods are available. The purpose of the questionnaires
is to provide common instruments that can be used to obtain internationally comparable data on
health–related physical activity."
FOR USE WITH YOUNG AND MIDDLE-AGED ADULTS (15-69 years)
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DURATION
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the default set-up of the script takes appr. 15 minutes to complete
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DATA FILE INFORMATION
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The default data stored in the data files are:
(1) Raw data file: 'ipaq.iqdat'
date, time: date and time script was run with the current group/subjectnumber
subject, group, session: with the current subject/groupnumber/session id
build: the Inquisit build
q*_response: response given (in assigned values)
q1: 1 = participants reports to have a job; 0 = otherwise (MET_work => 0)
/////at Work///////
q2: 1 = participant entered number of days for VIGOROUS PA at work (see q2other_response for actual number); 0 = no VIGOROUS PA at work
q3a: stores the hours per day of VIGOROUS PA for work
q3b: stores the minutes per day of VIGOROUS PA for work
(Note: total time spent on VIGOROUS PA for work = (hours*60) + minutes)
q4: 1 = participant entered number of days for MODERATE PA at work (see q4other_response for actual number); 0 = no MODERATE PA at work
q5a: stores the hours per day of MODERATE PA for work
q5b: stores the minutes per day of MODERATE PA for work
q6: 1 = participant entered number of days for WALKING at work (see q6other_response for actual number); 0 = no WALKING at work
q7a: stores the hours per day of WALKING for work
q7b: stores the minutes per day of WALKING for work
/////Transportation///////
q8: 1 = participant entered number of days for using car/bus etc during transportation activites (see q8other_response for actual number); 0 = no vehicle use during transportation activites
q9a: stores the hours per day of vehicle use during transportation activites
q9b: stores the minutes per day of vehicle use during transportation activites
(Note: q8 does NOT contribute to PA)
q10: 1 = participant entered number of days for CYCLING PA during transportation activites (see q10other_response for actual number); 0 = no CYCLING PA during transportation activites
q11a: stores the hours per day of CYCLING PA during transportation activites
q11b: stores the minutes per day of CYCLING PA during transportation activites
q12: 1 = participant entered number of days for WALKING during transportation activites (see q12other_response for actual number); 0 = no WALKING during transportation activites
q13a: stores the hours per day of WALKING during transportation activites
q13b: stores the minutes per day of WALKING during transportation activites
/////Chores///////
q14: 1 = participant entered number of days for VIGOROUS outside chores (see q14other_response for actual number); 0 = no VIGOROUS outside chores
q15a: stores the hours per day of VIGOROUS outside chores
q15b: stores the minutes per day of VIGOROUS outside chores
q16: 1 = participant entered number of days for MODERATE outside chores (see q16other_response for actual number); 0 = no MODERATE outside chores
q17a: stores the hours per day of MODERATE outside chores
q17b: stores the minutes per day of MODERATE outside chores
q18: 1 = participant entered number of days for MODERATE inside chores (see q18other_response for actual number); 0 = no MODERATE inside chores
q19a: stores the hours per day of MODERATE inside chores
q19b: stores the minutes per day of MODERATE inside chores
/////Leisure Time///////
q20: 1 = participant entered number of days for WALKING during leisure time (see q20other_response for actual number); 0 = no WALKING during leisure time
q21a: stores the hours per day of WALKING during leisure time
q21b: stores the minutes per day of WALKING during leisure time
q22: 1 = participant entered number of days for VIGOROUS PA during leisure time (see q2other_response for actual number); 0 = no VIGOROUS PA during leisure time
q23a: stores the hours per day of VIGOROUS PA during leisure time
q23b: stores the minutes per day of VIGOROUS PA during leisure time
q24: 1 = participant entered number of days for MODERATE PA during leisure time (see q4other_response for actual number); 0 = no MODERATE PA during leisure time
q25a: stores the hours per day of MODERATE PA during leisure time
q25b: stores the minutes per day of MODERATE PA during leisure time
/////Sitting///////
q26a: stores the hours per day of SITTING time during a WEEK DAY
q26b: stores the minutes per day of SITTING time during a WEEK DAY
q27a: stores the hours per day of SITTING time during a WEEKEND DAY
q27b: stores the minutes per day of SITTING time during a WEEKEND DAY
q*_latency: how much time (in ms) the participant spent on the surveypage with this particular
question (the last time this particular surveypage was visited)
NOTE: if participants are allowed to navigate back and forth on survey pages (default),
it is possible the raw data files store data that are not considered for summary variable analyses.
Example: participant enters 'work related' vigorous hours at 1 hour and 10 minutes (q3a + q3b) but later changes
their answer to question q2 to 'no work related vigorous activities'. In this case, the answer to q2 overrides the
earlier entered responses to q3a+q3b for summary variable analyses (= minutes of work related vigorous activity will be 0)
but the last responses to q3a/q3b are still stored in the raw data file.
To change navigation settings, go to element.survey_long and follow instructions.
(2) Summary data file: 'ipaq_summary*.iqdat' (a separate file for each participant)
inquisit.version: Inquisit version run
computer.platform: the platform the script was run on (win/mac/ios/android)
startDate: date script was run
startTime: time script was started
subjectid: assigned subject id number
groupid: assigned group id number
sessionid: assigned session id number
elapsedTime: time it took to run script (in ms); measured from onset to offset of script
completed: 0 = script was not completed (prematurely aborted);
1 = script was completed (all conditions run)
////////////////////////////////////////////////////////////
///////////Explanation of Abbreviations////////////////
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MET: Metabolic equivalent of a task
PA: Physical Activity
VPA: Vigorous Physical Activity
MPA: Moderate Physical Activity
PAL: Physical Activity Level
DPW: Days per Week exercised
MPD: Minutes per Days exercised
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Continues Measure of Physical Activity (PA): MET-minute scores
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From 'scoring_protocol.pdf' (p.3):
"METs are multiples of the resting metabolic rate and a MET-minute is computed by multiplying
the MET score of an activity by the minutes performed. MET-minute scores are
equivalent to kilocalories for a 60 kilogram person."
(MET scores used in this script reported in 'scoring_protocol.pdf', p.7-8)
//////////MET-scores by domain (see 'scoring_protocol.pdf', p.7-8)
/////at WORK:
MET_VPA_atWork: calculated as = 8.0*DPW_VPA_atWork*MPD_VPA_atWork_capped*
MET_MPA_atWork: calculated as = 4.0*DPW_MPA_atWork*MPD_MPA_atWork_capped
MET_walking_atWork: calculated as = 3.3*DPW_walking_atWork*MPD_walking_atWork_capped
MET_atWork: sum of all MET 'atWork' scores
* capped = by default scripts automatically limits number of minutes exercised per day for any of the three categories to 180minutes (3 hours)
for the purpose of computing MET scores.
To use uncapped scores, set parameters.useCappedMinutes (section Editable Parameters) to false.
/////Transportation
MET_cycle_transportation: calculated as = 6.0*DPW_cycle_transport*MPD_cycle_transport_capped (Note: counted as moderate activity)
MET_walking_transportation: calculated as = 3.3*DPW_walking_transport*MPD_walking_transport_capped
MET_transportation: sum of all MET 'transportation' scores
/////Chores
MET_VPA_outsideChores: calculated as = 5.5*DPW_VPA_outsideChores*MPD_VPA_outsideChores_capped (Note: counted as moderate activity)
MET_MPA_outsideChores: calculated as = 4.0*DPW_MPA_outsideChores*MPD_MPA_outsideChores_capped
MET_MPA_insideChores: calculated as = 3.0*DPW_MPA_insideChores*MPD_MPA_insideChores_capped
MET_chores: sum of all MET 'chores' scores
/////Leisure
MET_VPA_leisure: calculated as = 8.0*DPW_VPA_leisure*MPD_VPA_leisure_capped
MET_MPA_leisure: calculated as = 4.0*DPW_MPA_leisure*MPD_MPA_leisure_capped
MET_walking_leisure: calculated as = 3.3*DPW_walking_leisure*MPD_walking_leisure_capped
MET_leisure: sum of all MET 'leisure' scores
//////////vigorous, moderate and walking categories across domains
!!!Note: if parameters.useCappedMinutes = true (default) =>
MET_VPA is capped at 10080 MET min/week to be comparable to Short form
MET_MPA is capped at 5040 MET min/week to be comparable to Short form
MET_walking is capped at 4158 MET min/week to be comparable to Short form
MET_VPA: overall MET-minute score for vigorous physical activity (across domains)
Note: according to 'scoring_protocol.pdf' (p.8) calculated as
sum of (MET_VPA_atWork + MET_VPA_leisure)
MET_MPA: overall MET-minute score for moderate physical activity (across domains)
Note: according to 'scoring_protocol.pdf' (p.7) calculated as
sum of (MET_MPA_atWork + MET_cycle_transportation + MET_VPA_outsideChores + MET_MPA_outsideChores + MET_MPA_insideChores + MET_MPA_leisure)
MET_walking: overall MET-minute score for moderate physical activity (across domains)
Note: according to 'scoring_protocol.pdf' (p.7) calculated as
sum of (MET_walking_atWork + MET_walking_transportation + MET_walking_leisure)
/////////overal MET-minute score
MET_total: overall MET-minute score
calculated as the sum of the MET-minute scores for (MET_VPA + MET_MPA + MET_walking)
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Categorical Measure of Physical Activity (PA):
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Criteria to score Physical Activity Level are described in 'scoring_protocal.pdf', p. 8/9
DISCLAIMER: best guess interpretation of the criteria
PAL: Physical Activity Level (LOW, MODERATE, HIGH)
high_criterium1: 1 = participant fulfilled high_criterium1, IF SO (PAL = HIGH); 0 = otherwise
criterium: vigorous-intensity activity on at least 3 days achieving a minimum Total physical activity of at least 1500 MET-minutes/week)
calculation in this script:
if (expressions.DPW_VPA >= 3 AND expressions.MET_total >= 1500) => return '1' else return '0'
DPW_VPA: stores the number of days of vigorous physical activity (>= 10min) reported as the simple sum of (DPW_atWork + DPW_leisure)
MET_total: sum of all MET scores
high_criterium2: 1 = participant fulfilled high_criterium2, IF SO (PAL = HIGH); 0 = otherwise
criterium: 7 or more days of any combination of walking, moderate-intensity or vigorous-intensity activities achieving a minimum Total physical activity of at least 3000 MET-minutes/week.
Calculation in this script:
if (expressions.DPW_PA >= 7 AND expressions.MET_total >= 3000) => return '1' else return '0'
DPW_PA: sum of (DPW_VPA + DPW+MPA + DPW_walking)
MET_total: sum of all MET scores
moderate_criterium1: 1 = participant fulfilled moderate_criterium1, IF SO (PAL = MODERATE); 0 = otherwise
criterium: 3 or more days of vigorous-intensity activity of at least 20 minutes per day
Calculation in this script:
if (DPW_VPA_20) => return '1' else return '0'
DPW_VPA_20min: Days Per Week of VPA (vigorous physical activity) of at least 20 minutes per day:
Note:
This script sums the number of reported 'at work' days of at
least 20 minutes of vigorous activity AND the number of reported 'leisure'
days of at least 20 minutes of vigorous activity separately and then uses the sum of these days as DPW_VPA_30
moderate_criterium2: 1 = participant fulfilled moderate_criterium2, IF SO (PAL = MODERATE); 0 = otherwise
criterium: 5 or more days of moderate-intensity activity and/or walking of at least 30 minutes per day
Calculation in this script (analogous to calculation for ipaq_short):
if (DPW_MPAandWALK >= 5 AND expressions.totalMinutes_MPAandWALK/5 >= 30) => return '1' else return '0'
DPW_MPAandWALK: the combined DPWs for MPA and walking (simple addition)
totalMinutes_MPAandWALK: sum of the totalMinutes MPA and walking
moderate_criterium3: 1 = participant fulfilled moderate_criterium3, IF SO (PAL = MODERATE); 0 = otherwise
criterium: 5 or more days of any combination of walking, moderate-intensity or vigorous intensity activities achieving a minimum Total physical activity of at least 600 MET-minutes/week.
Calculation in this script:
if (expressions.DPW_PA >= 5 AND expressions.Met_total >= 600) => return '1' else return '0'
DPW_PA: sum of (DPW_VPA + DPW+MPA + DPW_walking)
MET_total: sum of all MET scores
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//PA days and total minutes of PA during the last 7 days per category (VPA, MPA, walking) and overall
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
////vigorous/////
DPW_VPA: Days Per Week of VPA (vigorous physical activity of at least 10 minutes); simple sum of (DPW_atWork + DPW_leisure)
DPW_VPA_20min: Days Per Week of VPA (vigorous physical activity) of at least 20 minutes per day:
Notes:
a) This script sums the number of reported 'at work' days of at
least 20 minutes of vigorous activity AND the number of reported 'leisure'
days of at least 20 minutes of vigorous activity (used for moderate criterium 1 in this script)
b) It is unclear if that is the intended translation (check publicly available R-script
for an alternative interpretation)
totalMinutes_VPA: total number of minutes of vigorous physical activity in a week (the last 7 days)
////moderate/////
DPW_MPA: Days Per Week of MPA (moderate physical activity)
totalMinutes_MPA: total number of minutes of moderate physical activity in the last 7 days
////walking/////
DPW_walking: Days Per Week of Walking
totalMinutes_walking: total number of minutes of walking in the last 7 days
////total/////
totalMinutes_PA: total number of minutes of physical activity in the last 7 days
////combinations///
DPW_MPAandWALK: the combined DPWs for MPA and walking (simple addition)
totalMinutes_MPAandWALK: sum of the totalMinutes MPA and walking
/////////////////////////////////////////////////////////////////////////////////////////////
//DPW (days per week physical exercise) and MPD (minutes per day physical exercise) per domain
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////////////////
at work
////////////////
DPW_VPA_atWork: stores the number of days of vigorous physical activity reported at Work (if nothing was reported, the data says 'missing data')
MPD_VPA_atWork: stores the reported time (in minutes) spent on the vigorous activity at Work on these days
MPD_VPA_atWork_capped: stores the reported time (in minutes) spent on the vigorous activity at Work on these days, capped at 180 minutes max (3 hours)
totalMinutes_VPA_atWork: stores the total reported number of minutes spent on vigorous exercise at work (NOT based on capped time)
DPW_MPA_atWork: stores the number of days of moderate physical activity reported at Work (if nothing was reported, the data says 'missing data')
MPD_MPA_atWork: stores the reported time (in minutes) spent on the moderate activity at Work on these days
MPD_MPA_atWork_capped: stores the reported time (in minutes) spent on the moderate activity at Work on these days, capped at 180 minutes max (3 hours)
totalMinutes_MPA_atWork: stores the total reported number of minutes spent on moderate exercise at work (NOT based on capped time)
DPW_walking_atWork: stores the number of days of walking physical activity reported at Work (if nothing was reported, the data says 'missing data')
MPD_walking_atWork: stores the reported time (in minutes) spent on the walking activity at Work on these days
MPD_walking_atWork: stores the reported time (in minutes) spent on the walking activity at Work on these days, capped at 180 minutes (3 hours)
totalMinutes_walking_atWork: stores the total reported number of minutes spent on walking exercise at work (NOT based on capped time)
//////////////////
transportation
//////////////////
DPW_cycle_transportation: stores the number of days of cycle physical activity reported during transportation (if nothing was reported, the data says 'missing data')
MPD_cycle_transportation: stores the reported time (in minutes) spent on the cycle activity during transportation on these days
MPD_cycle_transportation_capped: stores the reported time (in minutes) spent on the cycle activity during transportation on these days, capped at 180 minutes (3 hours)
totalMinutes_cycle_transportation: stores the total reported number of minutes spent on cycling during transportation (NOT based on capped time)
DPW_walking_transportation: stores the number of days of walking physical activity reported during transportation (if nothing was reported, the data says 'missing data')
MPD_walking_transportation: stores the reported time (in minutes) spent on the walking activity during transportation on these days
MPD_walking_transportation: stores the reported time (in minutes) spent on the walking activity during transportation on these days, capped at 180 minutes (3 hours)
totalMinutes_walking_transportation: stores the total reported number of minutes spent on walking during transportation (NOT based on capped time)
//////////////////
chores
//////////////////
DPW_VPA_outsideChores: stores the number of days of vigorous physical activity reported during outside chores (if nothing was reported, the data says 'missing data')
MPD_VPA_outsideChores: stores the reported time (in minutes) spent on the cycle activity during outside chores on these days
MPD_VPA_outsideChores: stores the reported time (in minutes) spent on the cycle activity during outside chores on these days, capped at 180 minutes (3 hours)
totalMinutes_VPA_outsideChores: stores the total reported number of minutes spent on vigorous outside chores (NOT based on capped time)
DPW_MPA_outsideChores: stores the number of days of moderate physical activity reported during outside chores (if nothing was reported, the data says 'missing data')
MPD_MPA_outsideChores: stores the reported time (in minutes) spent on the moderate activity during outside chores on these days
MPD_MPA_outsideChores: stores the reported time (in minutes) spent on the moderate activity during outside chores on these days, capped at 180 minutes (3 hours)
totalMinutes_MPA_outsideChores: stores the total reported number of minutes spent on moderate outside chores (NOT based on capped time)
DPW_MPA_insideChores: stores the number of days of walking physical activity reported during inside chores (if nothing was reported, the data says 'missing data')
MPD_MPA_insideChores: stores the reported time (in minutes) spent on the walking activity during inside chores on these days
MPD_MPA_insideChores_capped: stores the reported time (in minutes) spent on the walking activity during inside chores on these days, capped at 180 minutes (3 hours)
totalMinutes_MPA_insideChores: stores the total reported number of minutes spent on moderate inside chores (NOT based on capped time)
//////////////////
leisure
//////////////////
DPW_VPA_leisure: stores the number of days of vigorous physical activity reported at Work (if nothing was reported, the data says 'missing data')
MPD_VPA_leisure: stores the reported time (in minutes) spent on the vigorous activity at Work on these days
MPD_VPA_leisure_capped: stores the reported time (in minutes) spent on the vigorous activity at Work on these days, capped at 180 minutes (3 hours)
totalMinutes_VPA_leisure: stores the total reported number of minutes spent on vigorous physical activity during leisure time (NOT based on capped time)
DPW_MPA_leisure: stores the number of days of moderate physical activity reported at Work (if nothing was reported, the data says 'missing data')
MPD_MPA_leisure: stores the reported time (in minutes) spent on the moderate activity at Work on these days
MPD_MPA_leisure_capped: stores the reported time (in minutes) spent on the moderate activity at Work on these days, capped at 180 minutes (3 hours)
totalMinutes_MPA_leisure: stores the total reported number of minutes spent on vigorous physical activity during leisure time (NOT based on capped time)
DPW_walking_leisure: stores the number of days of walking physical activity reported at Work (if nothing was reported, the data says 'missing data')
MPD_walking_leisure: stores the reported time (in minutes) spent on the walking activity at Work on these days
MPD_walking_leisure: stores the reported time (in minutes) spent on the walking activity at Work on these days, capped at 180 minutes (3 hours)
totalMinutes_walking_leisure: stores the total reported number of minutes spent on walking during leisure time (NOT based on capped time)
////////////////////////////////////////////////////////////////////////////////////
Sitting
////////////////////////////////////////////////////////////////////////////////////
min_sitting_weekday: the total number of minutes spent sitting on weekdays during the last 7 days
min_sitting_weekend: the total number of minutes spent sitting on weekend days during the last 7 days
min_sitting: the total number of minutes spent sitting during the last 7 days
////////////////////////////////////////////////////////////////////////////////////
Non PA-transportation (car, bus etc.)
////////////////////////////////////////////////////////////////////////////////////
DPW_nonPA_transportation: days per week using non-PA transportation (car, bus, train etc.)
MPD_nonPA_transportation: minutes per day using non-PA transportation (car, bus, train etc.)
////////////////////////////////////////////////////////////////////////////////////
Optional columns that could be used to analyse the responses using the
publicly available R-script by M. Ponce-de-Leon:
https://github.com/Mariana-plr/IPAQlong/tree/main
Note: the R-script requires a data file with 25 data columns
////////////////////////////////////////////////////////////////////////////////////
radiobuttons.q1.response,
DPW_VPA_atWork,
MPD_VPA_atWork,
DPW_MPA_atWork,
MPD_MPA_atWork,
DPW_walking_atWork,
MPD_walking_atWork,
DPW_nonPA_transportation,
MPD_nonPA_transportation
DPW_cycle_transportation,
MPD_cycle_transportation,
DPW_walking_transportation,
MPD_walking_transportation,
DPW_VPA_outsideChores,
MPD_VPA_outsideChores,
DPW_MPA_outsideChores,
MPD_MPA_outsideChores,
DPW_MPA_outsideChores,
MPD_MPA_outsideChores,
DPW_walking_leisure,
MPD_walking_leisure,
DPW_VPA_leisure,
MPD_VPA_leisure,
DPW_MPA_leisure,
MPD_MPA_leisure,
__________________________________________________________________________________________________________________
EDITABLE PARAMETERS
__________________________________________________________________________________________________________________
/ useCappedMinutes = true //True: If TRUE all individually reported walking, moderate and vigorous times (in each domain)
//are capped at 180min (3 hours) per day for the purpose of MET min/week calculations.
//The max reported MET times for total vigorous, moderate, and walking
//calculated ACROSS the different domains are further capped at the
//max. values used in the IPAQ-Short form:
//VPA: 10080 MET min/week
//MPA: 5040 MET min/week
//walking: 4158 MET min/week
//False: the uncapped values are used for MET min/week calculations
/ runFeedbackPage = true //true: participants is informed about MET scores and physical fitness category
//false: no feedback is provided for participants
/ low = "LOW" //word used in optional feedback report for LOW level of PA (useful for translations)
/ moderate = "MODERATE" //word used in optional feedback report for MODERATE level of PA
/ high = "HIGH" //word used in optional feedback report for HIGH level of PA
