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| anthropometry_self-measurement [2026/01/22 14:37] – created petra_vinke | anthropometry_self-measurement [2026/08/19 12:01] (current) – [Anthropometry Self-measurement] simone |
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| Anthropometry self-measurements ([[sections|section]]: [[physical state]]) were performed by participants aged 16 years and older during: | Anthropometry self-measurements ([[sections|section]]: [[physical state]]) were performed by participants aged 16 years and older during: |
| * [[4A Visit 1]] | * [[4A Visit 1]] (ongoing) |
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| ===== Protocol ===== | ===== Protocol ===== |
| * Anthropometry self-measurement was the first measurement during visit 1, preceding the blood pressure self-measurement and measurements performed by a research nurse in the examination room. | * Anthropometry self-measurement was the first measurement during visit 1, preceding the blood pressure self-measurement and measurements performed by a research nurse in the examination room. |
| * When registering at the reception desk, participants completed a digital contraindication questionnaire to exclude participants with one of the following contra-indications: | * When registering at the reception desk, participants completed a digital contraindication questionnaire to exclude participants with a contra-indication. |
| - Electronic implant (pacemaker, internal defibrillator, insulin pump, neurostrimulator, cochleair hearing implant) | |
| - Prostheses: foot, leg, arm, hip, knee, and hand prostheses | |
| - Pregnancy | |
| - Cardiac arrhythmias | |
| - People wearing compression stockings. | |
| * If no contraindications were present, the participant received a barcode that could be used to identify themselves at the self-measurement boot. | * If no contraindications were present, the participant received a barcode that could be used to identify themselves at the self-measurement boot. |
| * Anthropometry self-measurement was performed with a SECA mBCA555. After scanning the barcode, the participant followed written instructions (presented on a poster on the wall) to perform the measurement. Instructions include the request to remove heavy clothing (jackets/pullovers), to empty pockets (i.e. keys, mobile phone and wallet removed), shoes and socks and to step on the SECA device with bare feet and stand upright. A bell was present in the boot to request assistance from an employee. | * Anthropometry self-measurement was performed with a SECA mBCA555. After scanning the barcode, the participant followed written instructions (presented on a poster on the wall) to perform the measurement. Instructions include the request to remove heavy clothing (jackets/pullovers), to empty pockets (i.e. keys, mobile phone and wallet removed), shoes and socks and to step on the SECA device with bare feet and stand upright. A bell was present in the boot to request assistance from an employee. |
| * First, length and weight were measured. Subsequently, a bio-impedence measurement was performed. | * First, length and weight were measured. Subsequently, a bio-impedence measurement was performed. |
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| | ===== Contra-indications/exclusion criteria ====== |
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| | Participants did not perform the anthropometry self-measurement in case of: |
| | * Electronic implant (pacemaker, internal defibrillator, insulin pump, neurostrimulator, cochleair hearing implant) |
| | * Prostheses: foot, leg, arm, hip, knee, and hand prostheses |
| | * Pregnancy |
| | * Cardiac arrhythmias |
| | * Wearing compression stockings that could not be taken off |
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| | ===== Validation ===== |
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| | A validation study was performed to compare the results of the height and weight self-measurements, with the results from the measurements performed by a research nurse. More information will follow. |
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| | ===== Variables ===== |
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| | | **Label English** | **Label Dutch** | **Code** | **Variable** | **Assessment** | **Age** | **[[IO]]** | |
| | | time at the end of seca measurement (self-measurement) | tijdstip einde van de seca meting (zelfmeting) | anthro_endtime_all_sm_1 | ended_at_anthro_sm | [[4A Visit 1|4A]] | 16+ | X | |
| | | time at the start of seca measurement (self-measurement) | tijdstip start van de seca meting (zelfmeting) | anthro_starttime_all_sm_1 | started_at_anthro_sm | [[4A Visit 1|4A]] | 16+ | X | |
| | | extracellular water in l (self-measurement) | extracellulair vocht in l (zelfmeting) | bia_extracellularwater_all_sm_1 | ecw | [[4A Visit 1|4A]] | 16+ | | |
| | | extracellular water percentage (self-measurement) | extracellulair vocht percentage in procent (zelfmeting) | bia_extracellularwaterpercentage_all_sm_1 | ecwp | [[4A Visit 1|4A]] | 16+ | | |
| | | fat mass in kg (self-measurement) | vetmassa in kg (zelfmeting) | bia_fatmass_all_sm_1 | fm | [[4A Visit 1|4A]] | 16+ | | |
| | | fat mass index in kg/m2 (self-measurement) | vetmassa index in kg/m2 (zelfmeting) | bia_fatmassindex_all_sm_1 | fmi | [[4A Visit 1|4A]] | 16+ | | |
| | | z-score fat mass index (self-measurement) | z-score vetmassa index (zelfmeting) | bia_fatmassindex_all_sm_2 | zfmi | [[4A Visit 1|4A]] | 16+ | | |
| | | fat mass percentage (self-measurement) | vetmassa percentage (zelfmeting) | bia_fatmasspercentage_all_sm_1 | fmp | [[4A Visit 1|4A]] | 16+ | | |
| | | phase angle in degrees (self-measurement) | fasehoek in graden (zelfmeting) | bia_phaseangle_all_sm_1 | pha | [[4A Visit 1|4A]] | 16+ | | |
| | | reactance in ohm (self-measurement) | reactantie in ohm (zelfmeting) | bia_reactance_all_sm_1 | xc | [[4A Visit 1|4A]] | 16+ | | |
| | | resistance in ohm (self-measurement) | weerstand in ohm (zelfmeting) | bia_resistance_all_sm_1 | r | [[4A Visit 1|4A]] | 16+ | | |
| | | segmental skeletal muscle mass in kg (left arm, self-measurement) | segmentale skeletspiermassa in kg (linkerarm, zelfmeting) | bia_segmentalsmm_all_sm_1_a | ssmmleftarm | [[4A Visit 1|4A]] | 16+ | | |
| | | segmental skeletal muscle mass in kg (left arm, bmi independent, self-measurement) | segmentale skeletspiermassa in kg (linkerarm, bmi onafhankelijk, zelfmeting) | bia_segmentalsmm_all_sm_1_b | ssmmleftarmbmiindependant | [[4A Visit 1|4A]] | 16+ | | |
| | | segmental skeletal muscle mass in kg (left leg, self-measurement) | segmentale skeletspiermassa in kg (linkerbeen, zelfmeting) | bia_segmentalsmm_all_sm_2_a | ssmmleftleg | [[4A Visit 1|4A]] | 16+ | | |
| | | segmental skeletal muscle mass in kg (left leg, bmi independent, self-measurement) | segmentale skeletspiermassa in kg (linkerbeen, bmi onafhankelijk, zelfmeting) | bia_segmentalsmm_all_sm_2_b | ssmmleftlegbmiindependant | [[4A Visit 1|4A]] | 16+ | | |
| | | segmental skeletal muscle mass in kg (right arm, self-measurement) | segmentale skeletspiermassa in kg (rechterarm, zelfmeting) | bia_segmentalsmm_all_sm_3_a | ssmmrightarm | [[4A Visit 1|4A]] | 16+ | | |
| | | segmental skeletal muscle mass in kg (right arm, bmi independent, self-measurement) | segmentale skeletspiermassa in kg (rechterarm, bmi onafhankelijk, zelfmeting) | bia_segmentalsmm_all_sm_3_b | ssmmrightarmbmiindependant | [[4A Visit 1|4A]] | 16+ | | |
| | | segmental skeletal muscle mass in kg (right leg, self-measurement) | segmentale skeletspiermassa in kg (rechterbeen, zelfmeting) | bia_segmentalsmm_all_sm_4_a | ssmmrightleg | [[4A Visit 1|4A]] | 16+ | | |
| | | segmental skeletal muscle mass in kg (right leg, bmi independent, self-measurement) | segmentale skeletspiermassa in kg (rechterbeen, bmi onafhankelijk, zelfmeting) | bia_segmentalsmm_all_sm_4_b | ssmmrightlegbmiindependant | [[4A Visit 1|4A]] | 16+ | | |
| | | segmental skeletal muscle mass (torso) in kg (self-measurement) | segmentale skeletspiermassa (torso) in kg (zelfmeting) | bia_segmentalsmm_all_sm_5_a | ssmmtorso | [[4A Visit 1|4A]] | 16+ | | |
| | | segmental skeletal muscle mass (torso) in kg (bmi independent, self-measurement) | segmentale skeletspiermassa (torso) in kg (bmi onafhankelijk, zelfmeting) | bia_segmentalsmm_all_sm_5_b | ssmmtorsobmiindependant | [[4A Visit 1|4A]] | 16+ | | |
| | | z-score skeletal muscle index (self-measurement) | z-score skeletspiermassa index (zelfmeting) | bia_skeletalmuscleindex_all_sm_1 | zsmi | [[4A Visit 1|4A]] | 16+ | | |
| | | total body water in l (self-measurement) | totaal lichaamsvocht in l (zelfmeting) | bia_totalbodywater_all_sm_1 | tbw | [[4A Visit 1|4A]] | 16+ | | |
| | | total body water percentage (self-measurement) | totaal percentage lichaamsvocht in procent (zelfmeting) | bia_totalbodywaterpercentage_all_sm_1 | tbwp | [[4A Visit 1|4A]] | 16+ | | |
| | | skeletal muscle mass in kg (self-measurement) | skeletspiermassa in kg (zelfmeting) | bia_totalsmm_all_sm_1_a | smm | [[4A Visit 1|4A]] | 16+ | | |
| | | skeletal muscle mass over age in kg (self-measurement) | skeletspiermassa naar leeftijd in kg (zelfmeting) | bia_totalsmm_all_sm_1_b | smmoverage | [[4A Visit 1|4A]] | 16+ | | |
| | | skeletal muscle mass over age in kg (bmi independent, self-measurement) | skeletspiermassa naar leeftijd in kg (bmi onafhankelijk, zelfmeting) | bia_totalsmm_all_sm_1_c | smmoveragebmiindependant | [[4A Visit 1|4A]] | 16+ | | |
| | | skeletal muscle mass percentage (self-measurement) | skeletspiermassa percentage (zelfmeting) | bia_totalsmm_all_sm_1_d | smmp | [[4A Visit 1|4A]] | 16+ | | |
| | | tru body score in points (self-measurement) | tru lichaamsscore in punten (zelfmeting) | bia_trubodyscore_all_sm_1 | tbs | [[4A Visit 1|4A]] | 16+ | | |
| | | water ratio (extracellular water/total body water) in percent (self-measurement) | vocht ratio (extracellulair water/totaal lichaamswater) in procent (zelfmeting) | bia_waterratio_all_sm_1 | ecwbytbw | [[4A Visit 1|4A]] | 16+ | | |
| | | body mass index in kg/m2 (self-measurement) | body mass index in kg/m2 (zelfmeting) | bmi_kgm2_all_sm_1 | bmi | [[4A Visit 1|4A]] | 16+ | | |
| | | height in cm (self-measurement) | lengte in cm (zelfmeting) | bodyheight_cm_all_sm_1 | height | [[4A Visit 1|4A]] | 16+ | | |
| | | weight in kg (self-measurement) | gewicht in kg (zelfmeting) | bodyweight_kg_all_sm_1 | weight_sm | [[4A Visit 1|4A]] | 16+ | | |
