Energy Expenditure and Body Composition in Pseudohypoparathyroidism 1a

Altered Resting Energy Expenditure as a Cause of Obesity in Pseudohypoparathyroidism 1a: A Pilot Study

Status

Terminated

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT01398774

Enrollment

519

Registered

2011-07-21

Start date

2011-06-30

Completion date

2017-11-20

Last updated

2018-08-22

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Albright Hereditary Osteodystrophy, Pseudohypoparathyroidism Type 1A

Keywords

Pseudohypoparathyroidism, Albright Hereditary Osteodystrophy

Brief summary

The investigators would like to learn more about the metabolic consequences of pseudohypoparathyroidism type 1a in children, adolescents and adults with this condition. People with pseudohypoparathyroidism 1a are at risk for development of obesity. To better understand the cause of overweight or obesity, investigators are measuring body composition and resting energy expenditure (REE), which is the amount of calories burned while completely at rest. The investigators also want to determine the amount of body fat.

Detailed description

Pseudohypoparathyroidism 1a (PHP1a) is a disorder that is associated with many endocrine problems. People with PHP1a are at risk for the development of obesity. The objective of the study will help determine if obesity is related to abnormalities energy expenditure, meaning that people with PHP1a may not burn as many calories while at rest as those without the disorder. In order to further evaluate obesity in PHP1a, investigators are planning to measure resting energy expenditure (REE), which is the amount of calories burned while completely at rest. Investigators will also evaluate body composition by looking at measures of growth and development and determining the amount of body fat using dual energy x-ray absorptiometry (DXA) as well as blood and urine biologic markers of obesity. The investigators plan to evaluate people with PHP1a at all weights.

Interventions

None listed

Study design

Observational model

COHORT

Time perspective

CROSS_SECTIONAL

Eligibility

Sex/Gender

ALL

Age

5 Years to 45 Years

Healthy volunteers

Yes

Inclusion criteria

* Diagnosis of pseudohypoparathyroidism 1a * Any body weight

Exclusion criteria

* Absence of above diagnosis

Design outcomes

Primary

Measure	Time frame	Description
Resting Energy Expenditure	30 minutes	The subject will rest for 30 minutes in the lab prior to the start of the test. A 60-minute resting energy expenditure (REE) test will be performed between 7:00 and 10:00 A.M. with the subject resting quietly under a clear, plastic hood watching a videotape.

Secondary

Measure	Time frame	Description
Characterize body composition in patients with PHP1a.	12 months	Body composition outcomes will be characterized by whole body lean mass and fat mass sex- and race-specific z-scores relative to height.

Countries

United States

Outcome results