Overview of 4HAIE study measurements and time points for data collection
| Time point | Screening | Laboratory examination | Follow-up | ||||
| Initial contact by telephone and email | Prelaboratory (in situ) | Day 1 | Day 2 | 6 months | 12 months | Ongoing | |
| Eligibility | × | ||||||
| Enrolment | × | ||||||
| PAR-Q | × | × | |||||
| Psychological and behavioural survey | × | × | × | × | |||
| Fitbit assessment | × | ||||||
| Blood pressure | × | ||||||
| GXT | × | ||||||
| Urine samples | × | ||||||
| HRV | × | ||||||
| Blood samples | × | ||||||
| Anthropometrics | × | ||||||
| Biomechanics | × | ||||||
| Cognitive function testing | × | ||||||
| MRI | × | ||||||
| Injury incidence | × | × | × | × | |||
GXT, graded exercise test; 4HAIE, Healthy Aging in Industrial Environment Study – Program 4; HRV, heart rate variability; PAR-Q, Physical Activity Readiness Questionnaire.