It is usually estimated by a temperature measurement immediately after awakening and before any physical activity has been undertaken. When measuring the temperature orally the thermometer should be placed under the tongue.
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What To Know Before You Buy A Basal Body Thermometer
Basal body measurement. Basal body temperature is the lowest body temperature attained during rest. Orally vaginally or rectally. Monitoring bbts is one way of estimating the day of ovulation. Basal body temperature bbt can be measured in three ways. Bbt follows roughly the same pattern from one menstrual cycle to another due to changing progesterone levels. Ideally you need one that is accurate to 110th 986 of a degree if you measure in fahrenheit or 1100th 3700 of a degree in celsius.
There are thermometers made especially for tracking your body basal temperature but you might not need one. Basal metabolic rate bmr is the rate of energy expenditure per unit time by endothermic animals at rest. Proper measurement requires a strict set of criteria be met. Ideally you need an accurate one to 110th 986 degrees when measured in fahrenheit or 1100th 3700 degrees celsius. For example your bmr is the number of calories your body would need to spend 24 hours asleep in bed. This will lead to a somewhat higher value than the true bbt.
The rectal method is considered the most accurate. You should adhere to one of them throughout the entire measurement period. Basal body temperature bbt is the body temperature when fully at rest. Digital accessory for body measure temperature oral underarm for children adults babies accurate reading auto off. Tracking your basal body temperature for either fertility or contraception is inexpensive and doesnt have any side effects. It is reported in energy units per unit time ranging from watt joulesecond to ml o 2 min or joule per hour per kg body mass j hkg.
Steady temperature ranging from 97 99 f 361 372c from the first day of a period until ovulation follicular phase slight dip on ovulation day. The tendency of a woman to have lower temperatures before ovulation and higher. There are several thermometers specially designed to measure the basal body temperature you can choose from the table above or read more about them below. Basal body temperature can be used as a way to predict fertility or as a part of a method of contraception by helping you gauge the best days to have or avoid unprotected sex. Your bmr number will depend on many factors such as your weight your diet and your current activity level. The basal metabolic rate bmr calculator estimates your basal metabolic ratethe amount of energy expended while at rest in a neutrally temperate environment and in a post absorptive state meaning that the digestive system is inactive which requires about 12 hours of fasting.
In women ovulation causes a sustained increase of at least 02 c in bbt. Basal body thermometer ovulation predictor bbt for fertility tracking works with every ovulation app accurate and highly sensitive for natural family planning bbt 113ai by iproven 41 out of 5 stars 406. Factors that affect your bmr include age genetics weight heredity body fat percentage and gender.
Gallery of Basal Body Measurement
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