After testing the Spree Headband, and compiling the data, it can be seen that the device has its advantages and disadvantages. In regards to heart rate monitoring, the headband yielded accurate readings in relation to the gold standard (wireless pulse-oximeter). This is due to the fact that the Pearson's R-value for heart rate was 0.986377. The R-Valve explains the correlation between the Spree Headband and the wireless pulse-oximeter. With a value close to one, in this instance, it can be concluded that the readings were consistent when compared to each other. This R-valve implies the data is increasing in a linear fashion; nearly 1:1. The complication with this portion of the test however, was the final P-value. The heart rate study produced a P-value of 0.309824, or a 30% percent chance for there to be a statistical difference in the data. With that in mind, the test shows signs of accuracy, but nothing can be concluded with the correlation between the Spree Headband and the wireless pulse-oximeter.
The other aspect of the investigation would be the temperature reading of the test subjects. In this regard, the Spree Headband and the gold standard (oral thermometer), had no correlation. The calculated Pearson's R-value for the data of the 32 blind studies was -0.03154. This number states that as the measured oral temperature increases, due to an increase in activity, the Spree headband reading does not follow the same pattern. With a P-value so close to zero, it can be concluded that the compiled data was extremely accurate; the data had nearly no discrepancies.
In conclusion, it was determined that the Spree Headband was fairly accurate for heart rate, but due to the inaccuracy and imprecise temperature readings, the Spree Headband should not be endorsed as a valid method to measure temperature and therefore does not perform at the level at which it is advertised at. In order to improve the device, the temperature should not be measured using a range of values dictated by Level 1, Level 2, or Level 3 with very broad minimum and maximum temperatures in each. It should instead be a narrower numerical range of values of body temperature, as measuring body temperature by skin in itself is imprecise. Measuring by skin temperature is imprecise because factors such as sweat, evaporation of sweat on the skin, outside temperature, and poor skin contact with the device all affect the readings. However, with some necessary improvements, the Spree Headband could potentially be a very accurate device available for the general public.
LAB 3B WRITE-UP
Target Population and Need
The target population of the Mont Vert Fitness Watch (VA-21) is predominately athletes interested in improving their current level of fitness. This device monitors heart rate, core body temperature, distance traveled, time, and other additional features designed to enhance their workout experience.
With a growing issue of heat related injuries and illnesses in high school and college athletics, the Mont Vert VA-22 enables real time monitoring of various vital aspects of the human body in order to assist in the prevention of these avoidable heat related issues, and provides features for fitness orientated people of all ages that are essential in maintaining a more robust and developed exercise experience. Unlike other similar products in the fitness watch industry, the VA-21 fitness watch includes a clear plastic retainer with a wireless thermometer designed to be custom fit to the lower row of teeth. The sensor, after the retainer is worn, is located on the rear of the central incisors and performs similarly to a common oral thermometer.
Device Design
The Mont Vert Fitness Watch is a two part system designed to perform accurately and with dependability. The mouthpiece fits to the lower row of teeth, with a wireless, Bluetooth compatible, thermometer. It's lightweight design, and unique custom fit, ensures a comfortable workout experience. Unlike other devices that measures surface temperature via headband or chest-band, the Mont Vert mouth piece measures oral temperature, and displays a considerably more accurate temperature reading than our competitors. Other features of the Mont Vert Fitness Watch include
Pedometer
GPS
Calories Burned (accessible feature through app, after entering BMI, body weight, and height),
Water Resistant (water proof with after market cover),
World Time, with automatic time zone change,
Stop Watch,
Time Trial (to Hundredths of a Second),
Speedometer,
Estimated number of minutes to complete one mile,
Multiple pages that can be easily swiped through via the touch screen, which come pre-organized; Temp, Calories, Heart Rate; Distance, Time, Minutes-Per-Mile; GPS + Downloadable Map outline, and can be personally organized to fit individual lifestyles,
Auto-flip screen according to the side it is worn on,
Data can be uploaded to the App and shared online with other owners,
2gb of memory storage, and it is also rechargeable. Comes in a variety of colors; Light pink, pale blue, white, blue, green, black, and red.
Free Mont Vert App download with in-box promo code.
The Mont Vert Fitness App features the ability to create charts of progress for stored data: Distance, HR, Calories burned, speed, time spent working out, deepness of sleep by hour using heart rate comparisons, and a diet/calorie counter via myfitnesspal. This data can be posted online and shared with other Mont Vert Fitness Watch owners, or kept private for personal record keeping.
The Mont Vert Fitness Watch also comes in Sports Bundles; NCAA approved rubberized mouth guard with temperature sensor for football or rugby players and comes with an Otterbox brand wearable watch case to protect against high-impact conditions, sunglasses and squeeze-bottle for cyclists and runners, or a waterproof case with free adjustable goggles for water sport athletes.
BME 100 Fall 2014
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