The FLOATAWEIGH™ - Underwater Weighing for Everyone

The FLOATAWEIGH™ - Underwater Weighing for Everyone

Fat % is accurately determined from body densitometry by water displacement.

 

Body densitometry from water weight displacement was previously available only in university research laboratories.

Now anyone with a pool or spa can get “gold standard” fat % data using a floating weighing system, the FLOATAWEIGH.

 

 

FLOATAWEIGH

Easy to use.

FLOATAWEIGH Software

Great software.

FLOATAWEIGH

 

 

The light-weight FLOATAWEIGH is easy to assemble or disassemble for storage.
Aluminum framework with 4 load cells and transmitter box.

Aluminum framework with 4 load cells and transmitter box.

Floats (blue) made of sturdy cross-linked polyethylene.

Floats (blue) made of sturdy cross-linked polyethylene.

Framework attaches to floats with 4 thumbscrews.

Framework attaches to floats with 4 thumbscrews.

Large eyebolts insert into floats to tie up the FLOATAWEIGH.

Large eyebolts insert into floats to tie up the FLOATAWEIGH.

 

 

Patented technology powers the weighing system and transmits data to a thumb-drive sized receiver that plugs into a USB port.

Telemetry transmitter is powered by flashlight batteries.

Telemetry transmitter is powered by flashlight batteries.

Telemetry receiver (green) plugs into USB port of computer.

Telemetry receiver (green) plugs into USB port of computer.

 

 

Fat % measured with the FLOATAWEIGH was highly correlated with data from a tank mounted underwater weighing system in a university study that has been accepted for presentation at the 2014 annual meeting of the American College of Sports Medicine:


Validation of a novel free-floating hydrostatic weighing apparatus

Kelsey Y. Andrist, Emily J. Alcott, Lori E. Crow, Holly R. Edelburg, Kaci M. Platz, Jenna L. Woelfel, Kent C. Hansen

Winona State University, Winona, MN

Hydrostatic weighing is considered by many a gold-standard method of assessing body composition. Limitations to using this method include, but are not limited to, space for the water tank as well as the additional cost of the tank. To circumvent these limitations, a novel apparatus has been developed that can be used in a swimming pool which is more widely available, without the additional cost of a water tank. Purpose: To evaluate the validity of a novel, floating hydrostatic weighing apparatus (FLOTAWEIGH™) in a swimming pool against a traditional fixed hydrostatic weighing system found in a typical laboratory water tank. Methods: 34 healthy subjects (19 males, 15 females), acting as their own controls, were assessed for body composition using the floating apparatus compared to a standard fixed apparatus in a typical hydrostatic weighing tank. Both apparatuses have identical structure, load cells, electronic sampling patterns (43 samples/second) and software. The devices differed only in their environment of weighing, one floated freely in a pool while the other was fixed within a water tank. Results: The % body fat (%BF) means (±SD) are 16.3% (± 6.5%) and 16.8% (± 6.7%) for the pool and tank apparatuses respectively. The %BF range for our subjects included 6.1% (5.4%) - 27.3% (27.6%) in the tank (pool).  We found a significantly positive correlation (y = 0.9997x + 0.5013) between the two devices resulting in an R2 = 0.9416 (p < 0.001). On average, the tank resulted in only a 0.5% greater body fat percentage compared to the pool. Discussion and Conclusion: The results suggest that the new hydrostatic weighing system correlates well with the fixed version in the controlled environment of a water tank. The new floating apparatus adequately overcame the below-water current perturbations inherent to most swimming pools due to water pumps. The clinical significance is that the FLOTAWEIGH™ measured our subjects very closely to the fixed version with a 0.5% difference in body fat. These results support the validity of the new FLOTAWEIGH™ apparatus for body composition assessment. 

 

 

EXERTECH Body Densitometry Systems