OPTImizing CArdiac REhabilitation by REfining Sleep and STress

This will be measured with a GENEACTIV accelerometer for 7 days and nights continuously.

This will be measured with a GENEACTIV accelerometer for 7 days and nights continuously.

This will be measured with a GENEACTIV accelerometer for 7 days and nights continuously.

This will be measured with a GENEACTIV accelerometer for 7 days and nights continuously.

This will be measured with the Pittsburgh Sleep Quality Index (PSQI) questionnaire. Score between 0-21, higher score indicates worse sleep quality.

This will be measured with the Perceived Stress Scale-10 (PSS-10) questionnaire. Score between 0-40, higher score indicates higher perceived stress.

This will be measured by taking a hair sample. The amount of cortisol in the hair will be determined in a lab.

This will be measured by taking a hair sample. The amount of cortisone in the hair will be determined in a lab.

Weight will be measured with a digital scale in kilograms.

Height will be measured with a stadiometer in centimeters.

Weight and height will be combined to report BMI in kg/m^2.

Blood pressure will be measured with a blood pressure monitor.

This will be measured with a carbon monoxide breath tester.

This will be measured with a self-designed questionnaire. The outcome of this questionnaire indicates whether a person smokes/has smoked in the past/does not smoke, what sort of tobacco is being smoked and how much the participant smokes.

Handgrip strength will be measured with a hand dynamometer.

This will be measured with a GENEACTIV accelerometer for 7 days and nights continuously.

This will be measured with a GENEACTIV accelerometer for 7 days and nights continuously.

This will be measured with the five-shot questionnaire. Score between 0-7, higher score indicates higher chance of alcohol overuse, misuse, and dependency.

This will be measured with the MacNew questionnaire. Score between 1-7, higher score indicates higher health related quality of life.

This will be measured with the EuroQol 5D/EQ5D questionnaire. Score between -0.446 - 1, higher score indicates a better health state. One subscale has a score between 0-100, higher score indicates better perceived health.

This will be measured with the Fatigue Severity Scale (FSS) questionnaire. Score between 9-63, higher score indicates a greater fatigue severity.

This will be measured with the Epworth Sleepiness Scale (ESS) questionnaire. Score between 0-24, higher score indicates a higher level of daytime sleepiness.

This will be measured with the Hospital Anxiety and Depression Scale (HADS) questionnaire. Score between 0-21 per subscale, higher score indicates severe symptoms of anxiety and depression.

This will be measured with the USER-Participatie (USER-P) questionnare. Score between 0-100, higher score indicates higher participation in society.

This will be measured with the FitMáx©-Questionnaire. The outcome of this questionnaire is the estimated maximum oxygen uptake expressed in mL/kg/min. Higher score indicates better cardiorespiratory fitness.

This will be measured with the RLS rating scale questionnaire. Score between 0-28, higher score indicates more severe symptoms of restless leg syndrome.

This will be measured with the Insomnia Severity Index (ISI) questionnaire. Score between 0-28, higher score indicates more severe insomnia complaints.

This will be measured with the STOP-bang questionnaire. Score between 0-8, higher score indicates higher risk of obstructive sleep apnoea.

This will be measured with the IMTA Medical Consumption Questionnaire (IMCQ) which aims to determine costs within the health care system.

This will be measured with the IMTA Productivity Costs Questionnaire (IPCQ) which aims to determine the cost of productivity losses.

This will be measured with the Sleep Consensus Diary for 7 days. The Sleep Consensus Diary consists of questions about the experience of sleep, what time the participant went to sleep, and how often the participant woke up.

This will be measured with an electronic diary. Intake of caffeine and alcohol and timing of the main meal will be measured.

This will be measured with an electronic diary.

This will be measured with an electronic diary.

This will be measured by recording the number of rehabilitation components attended, such as courses on nutrition or personal counseling.

This will be measured with a self-designed questionnaire and consists of questions about the applicability, clarity and logistics of the intervention.

Female / male / other

Age in years.

Cardiac diagnosis as defined by ICD-10 that has resulted in referral to cardiac rehabilitation.

Single-item question (high, middle, or low educated).

Single-item question.

Presence of cardiac risk factors (family history, diabetes mellitus, hypertension, dyslipidemia, smoking prior to event).

History of cardiovascular events and diseases.

Number of participants using a certain type of prescribed and/or over-the-counter medication.

Presence of other diseases.

Socioeconomic status indicated by postal code.

Determined by birth country and parents' birth country.

Determined by employment status, and type of job.

Drug use (yes/no) and drug classification.

Description of current and previous treatment for sleeping disorders.