Body Weight, Healthy, Overweight, Thinness
Conditions
Keywords
Resting energy expenditure, Calorie requirements, Indirect Calorimetry
Brief summary
Assessment of resting energy expenditure (REE) by indirect calorimetry (IC) in 1400 healthy individuals for arithmetical transformation into an bedside tool to estimate energy requirements in dietary practice (BASAROTs). A multinational, multicenter, prospective cross-sectional study.
Detailed description
The assessment of energy expenditure is the basic requirement for any nutritional therapy. Nevertheless, there is still no accurate, scientifically validated and practical bedside tool. The reference method for energy expenditure measurement is indirect calorimetry (IC). High costs, time requirements and the need for trained personal are main reasons for its limited use in clinical practice. Also arithmetical calculations, such as the Harris-Benedict equation, are not widely accepted. In general energy expenditure is often estimated by so called rules of thumbs, a method requiring only one multiplication with body weight (for example: 25 kcal/kg body weight). Sex, age and BMI are usually not considered, although they are independent predictors of energy expenditure. Thus, energy expenditure estimations are often inaccurate, especially in older and overweight/obese persons. Therefore, it is important to develop a bedside tool that is more accurate but simple enough to be accepted by practitioners. In 2004, the Austrian Society of Clinical Nutrition published the first BMI, aged and sex adapted rule of thumbs, called BASAROTs (BMI Age Sex Adjusted Rule Of Thumbs). Those were, however, based on results of the Harris Benedict equation. The main objective of the present study is, therefore, to replace the existing BASAROTs by BASAROTs based on actual measurements of resting energy expenditure by indirect calorimetry (IC-BASAROTs).
Interventions
None listed
Sponsors
University of Applied Sciences Neubrandenburg
Study design
Observational model
OTHER
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to 100 Years
Healthy volunteers
Yes
Inclusion criteria
* female, male * 18 years to 85 years * Body Mass Index: 14,0 - 49,9 kg/m² * Eastern Cooperative Oncology Group (ECOG) Performance Status (Grade 0 or 1) * normal thyroid function * subjective health in dependence of BMI (underweight, normal weight, obesity, morbid obesity)
Exclusion criteria
* implanted pacemaker * amputations * paresis (mono- and diparesis) * Asian or African descent * above-average physical activity (competitive sport) * present or suspicion of malignant neoplasms (tumors, metastases, hemato-oncological diseases) * severe diseases (organ diseases, neurological diseases) * severe dementia (MMSE \< 20 points) * pregnancy * participation in other trials * subjects with expect non-compliance to protocol guidelines * intake of: * lithium compound * neuroleptics: Olanzapine (Zyprexa ®), Clozapine, Sertindole, Ziprasidone, Haloperidol, Thioridazine * anticonvulsant (Carbamazepin, Valproic Acid, Topiramate) * noradrenalin-reuptake-inhibitor (NARI): Reboxetine , Atomoxetine * tricyclic antidepressants (Amitryptiline, Clomipramine, Doxepin, Imipramine, Trimipramin) * Lorcaserin * interferon-alfa, interferon-beta * Baclofen * Orciprenaline * Amiodarona * Insulin * corticoid therapy (oral)
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| resting energy expenditure (REE) (kcal) | 15 minutes | Assessed by indirect calorimetry |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Body temperature (°C) | one single (baseline) measurement under standardized conditions | measured axillar, by infra-red ear thermometer and non-contact thermoscan |
| Heart rate (bpm) | one single (baseline) measurement under standardized conditions | measured by heart rate band and blood pressure device |
| Body weight (kg) | one single (baseline) measurement under standardized conditions | measured by electronic scale integrated in BIA device |
| Body height (m) | one single (baseline) measurement under standardized conditions | measured by digital stationary stadiometer |
| Fat mass (FM) (kg) | one single (baseline) measurement under standardized conditions | measured by bioelectrical impedance analysis (BIA) |
| Fat-free mass (FFM) (kg) | one single (baseline) measurement under standardized conditions | measured by bioelectrical impedance Analysis (BIA) |
| Fat-free mass index (FFMI) (kg/m²) | one single (baseline) measurement under standardized conditions | measured by bioelectrical impedance Analysis (BIA) |
| Fat mass index (FMI) (kg/m²) | one single (baseline) measurement under standardized conditions | measured by bioelectrical impedance Analysis (BIA) |
| blood pressure (mm Hg) | one single (baseline) measurement under standardized conditions | upper arm measurement by certified medical device |
| Total body water (TBW) (l) | one single (baseline) measurement under standardized conditions | measured by bioelectrical impedance Analysis (BIA) |
| Extracellular water (ECW) (l) | one single (baseline) measurement under standardized conditions | measured by bioelectrical impedance Analysis (BIA) |
| Resistance (R) (Ω) | one single (baseline) measurement under standardized conditions | measured by bioelectrical impedance Analysis (BIA) |
| Reactance (Xc) (Ω) | one single (baseline) measurement under standardized conditions | measured by bioelectrical impedance Analysis (BIA) |
| Phase angle (°) | one single (baseline) measurement under standardized conditions | measured by bioelectrical impedance Analysis (BIA) |
| Waist circumference (cm) | one single (baseline) measurement under standardized conditions | measured by measuring tape |
| International Physical Activity Questionnaire (IPAQ) short form | one single (baseline) interview | — |
| Skeletal muscle mass (SMM) (kg) | one single (baseline) measurement under standardized conditions | measured by bioelectrical impedance Analysis (BIA) |
Countries
Germany
Contacts
Primary ContactLuzia Valentini, Prof. Dr.
Backup ContactSara Ramminger, M.Sc.
Outcome results
None listed