![]() From there, it’s simply a matter of solving the equation.įor example, if we estimate that you’ve been in an energy surplus of 200 Calories per day based on the rate at which your weight has been changing, and we can see that you’ve been eating approximately 3000 Calories per day, we can calculate that your daily energy expenditure is approximately 3000 – 200 = 2800 Calories.Īs you continue to use MacroFactor, we’ll continue monitoring your energy intake and changes in weight to update your calculated energy expenditure. However, we can use information about your rate of weight change and the caloric content of fat tissue versus lean tissue to estimate the change in stored energy associated with your changes in weight (fat has a greater energy density than lean mass at slower rates of weight loss or faster rates of weight gain, we anticipate that a larger proportion of the weight you gained or lost came from fat mass). “Change in stored energy” is slightly tougher to estimate, since we’re ultimately working with weight data. “Calories in” is simple to calculate, since you’re either logging your food in MacroFactor, or importing nutrition information from another source that’s synced with this app. Since we want to estimate your energy expenditure, we need to rearrange the equation to solve for “Calories out”: Calories in – Change in stored energy = Calories out. We start with the basic energy balance equation: Calories in – Calories out = Change in stored energy (and changes in stored energy obviously come with changes in weight over time). Your estimated energy expenditure is a deterministic calculation based on your calorie intake and changes in body weight. In short, we’re not going to pretend that MacroFactor is a game changer for nutrition coaches, but, relative to other nutrition apps, it should reduce a bit of friction to make your life (and your clients’ lives) a little easier. MacroFactor also supplies information that other apps don’t, including sophisticated weight trending and updating estimations of daily energy expenditure, which might help you make better diet adjustments for your clients. MacroFactor also allows users to set custom macro targets day-to-day, which will make it simple for your clients to adjust their daily targets to match your recommendations. However, we make it easy for users to take screenshots of their nutrition information for the past week, and more importantly, we make it easy for users to export their daily weight, calorie intake, and macronutrient intake data to a spreadsheet, which they could send to a coach. We don’t currently have a built-in coaching portal to allow you to see and manage your clients’ nutrition programs in-app. We do also offer a free trial, so you can try it out before being charged. MacroFactor’s prices are set at a competitive rate, though, and you have the option to choose from three subscription options to find the one that works best for you. ![]() But for now, data from activity trackers wouldn’t affect the core functionality of the app: weight and nutrition data give us all the information we need to generate and adjust macro programs. We have some ideas about how we may be able to use activity data to further tweak and fine-tune our energy expenditure estimations at the margins, so we do plan on allowing users to integrate with activity trackers eventually (so we can empirically test those ideas). Instead, we look at trended weight changes and compare those changes to calorie intake in order to back-calculate energy expenditure. Currently, we don’t pull data from smart watches or activity trackers for one simple reason: they don’t seem to do a particularly good job of estimating energy expenditure.
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