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I got my first DEXA scan this week. I've been using INBody scans for a while to track my progress, but the dexa is way more accurate, heres what to expect from both.
- InBody consistently underestimates fat percentage (by ~8-10%).
- Use InBody for Trends, Not Absolute Values
While absolute fat and muscle numbers may be off, InBody is still useful for tracking trends over time (e.g., whether body fat % is going up or down).
- Pay Attention to Hydration Levels
InBody’s accuracy is affected by hydration.
If you're dehydrated, InBody will overestimate body fat.
If you're highly hydrated (e.g., post-workout), InBody will underestimate fat and overestimate lean mass.
To get consistent results, always scan at the same time of day, ideally in a fasted state before workouts.
- Use DEXA Every 3-6 Months for Precision 1 reply
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I completely agree with this. Back in college, during our cardio therapy and physio labs, we had to prep for our monthly DEXA scans. This meant getting enough sleep, staying hydrated for a week leading up to the scan, eating well, and so on. There are so many variables at play, and honestly, the numbers just aren’t that helpful.
At the end of the day, it’s pretty simple: a clean diet is key, stay hydrated, stay active every day, and get enough sleep.
I know people love data and numbers, but sometimes they can have the opposite effect and kill motivation.
Alright, I think I’m done ranting—though I could talk about this for hours! 1 reply
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