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Table 3 Summary of Study Measures

From: Multidisciplinary lifestyle intervention in children and adolescents - results of the project GRIT (Growth, Resilience, Insights, Thrive) pilot study

Study MeasureTimepointsExplanationRelated intervention component/s
AttendanceAll sessions from baseline to 12 weeksMeasure of feasibilityAll
Retention1st exercise session to last attended study sessionMeasure of feasibility
Total days involved and number of participants completing the study versus withdrawal
Program involvement
Adverse eventsReported at any exercise, dietary or psychology sessionMeasure of feasibility
Minor or major
Assessed whether unrelated, potentially related or related to the study
Satisfaction12 weeks or at withdrawalMeasure of feasibility
Collected via written surveys with Likert scaled questions
Heart rate during exercise sessionsContinuously during HIIT group exercise sessions and individual make-up sessionsGuide for participants during exercise sessions to achieve high intensity and recovery heart rate targets
Changes in HR across the intervention are a fitness indicator
Exercise sessions
AnthropometryBaselineParticipant characteristics for weight, height and waist circumference, with calculation of BMI, BMI-for-age percentiles and Z-scoreNot a target of any interventions
Maximal graded cardiorespiratory testingBaseline and 12 weeksVO2peak: Peak oxygen consumption during testing as a measure of maximal exercise capacity. Testing time to reach VO2peak measures time to exertion.
HRmax: Maximum heart rate measured during exercise testing. A reduction in HRmax over time can indicate improvements in cardiac output.
MFO: maximum fat oxidation measure during testing, positively associated with respiratory capacity and training status [36].
Exercise sessions
Australian Child and Adolescent Eating Survey FFQ (Nutrient intake and diet quality)Baseline and 12 weeksTotal and food-group based Australian Child and Adolescent Recommended Food Scores, measures of diet quality reflecting adherence to the Australian Dietary Guidelines.
Estimated daily intake of food groups as a percentage contribution to total energy intake.
Estimated macro- and micronutrient intake
Dietary education sessions and cooking demonstrations
Piers Harris-2
Self-concept scale
Baseline and 12 weeksGlobal measure of self-esteem. Measures total and domains of behavioural adjustment, intellectual and school status, physical appearance and attributes, popularity, happiness and satisfaction, and freedom from anxietyAll
  1. HIIT High Intensity Interval Training, FFQ food frequency questionnaire