🔴 Japanese
- 🔍 [Ankle Review] Fitbit Air vs. Charge 6: The Great Data Discrepancy
- 📢 Your cardio load for this morning’s walk was close to an all-time high
- 💬 Dorami, you had a solid walk this morning
- 🤔 One Side Shows “Intense Training,” the Other Shows a “Relaxed Walk”… Why?
- 💡 Conclusion: Tomorrow, I’ll Find Out if the Swing Was the Real Culprit!
🔍 [Ankle Review] Fitbit Air vs. Charge 6: The Great Data Discrepancy
This morning, I headed out to Nagai Park with the “Fitbit Air” wrapped around my right ankle and the “Charge 6” around my left ankle. I manually started a “Walking” workout on the Air side to ensure clean tracking.
What came out was completely opposite data: one showing “Intense Training” (Air) and the other showing a “Relaxed Break” (Charge 6). Since the Air data has a massive discrepancy with how my body actually felt, tomorrow I plan to conduct a follow-up test where I swap it to my wrist only when riding the playground swing. First, as a prelude, I will reveal the full story of this morning’s “contradictory data”!
📢 Your cardio load for this morning’s walk was close to an all-time high
7:40
Your cardio load for this morning’s walk was close to an all-time high
Great job on your 55-minute walk. This morning looked like a session where you pushed yourself harder than ever before.
- Adapting to High Load: Your cardio load of 86 is the highest since May. You maintained a heart rate of 160 bpm or higher even after the 40-minute mark, showing outstanding cardiovascular strength.
- Evolution of Efficiency: Your pace went up to 13’38″/km. It’s impressive how steady your steps are, considering you are nearly 20% faster than a month ago.
- Peak Focus: The final 15 minutes showed a powerful final push. Did you take a particularly tough route with hills or stairs?
You worked hard, so please focus on deep breathing now to lower your heart rate slowly. Do your legs feel heavy?
💬 Dorami, you had a solid walk this morning
7:28
Great job on your 55-minute walk. The device on your ankle was ticking along perfectly at a steady rhythm.
- Heart Rate Peak: Your heart rate shot up to 162 bpm around the 20-minute mark. Your breathing recovered much faster after conquering that steep hill (?), compared to before.
- Low Strain: Back in May, this pace would have put much more strain on your heart, but today you moved very smartly with a load of only 36. Your heart is really getting used to this rhythm.
- Body Balance: Since your pace was steady from start to finish, there was probably very little impact on your back.
Make sure to refuel with breakfast after all that activity. Did you feel any discomfort in your chest while walking?
🤔 One Side Shows “Intense Training,” the Other Shows a “Relaxed Walk”… Why?
The Air on my right foot is super excited, saying, “All-time high load! Sustained heart rate over 160 bpm!” On the other hand, the Charge 6 on my left foot is ultra-cool: “Very smart with a load of 36, highly stable.” These results are so extreme that it’s hard to believe they came from the exact same body walking the exact same path at the exact same time!?
The Air coach asked me, “Did you take a particularly tough route with hills or stairs?” But the truth is, right before that heart rate spiked, I was sitting on a playground swing, feeling the breeze and enjoying a nice break! 😂
⌚ The “Red Peak” on Charge 6 is Actually a Mini-Workout on Park Equipment!
There is a section in the middle of the Charge 6 graph that forms a red, high-intensity peak. This is actually the time when I was doing a quick mini-workout—like incline push-ups and dead hangs—on the exercise equipment at the sports park for a few minutes!
That’s why my heart rate spiked for a moment, and once I finished the workout and started walking again, my breathing gradually settled, returning to the green “Moderate/Low Intensity” graph. It matches my physical sensation perfectly.
⚠️ The Problem is the Air Heart Rate Graph
Riding the swing at the final corner of my walk is my secret pleasure. But a swing is something you keep moving just by shifting your core and back weight once it gets going. My feet aren’t kicking the ground at all; they are just dangling in the air. Therefore, it should be absolutely impossible for my heart rate to hit 160 bpm.
It’s just a guess, but the ultra-lightweight Air might have directly over-sensed the intense forward-and-backward centrifugal force (G-force) unique to swinging right at the ankle.
The sensor probably had a massive misunderstanding: “Whoa! This ankle just started sprinting at a crazy high speed!” The screw 🪛 in its heart rate calculation program must have flown off, causing it to freeze right in the red zone. 🤣
If that’s the case, its screws come loose way too easily!
💡 Conclusion: Tomorrow, I’ll Find Out if the Swing Was the Real Culprit!
So, tomorrow I’m going to test the “Swap Air to Wrist Only for the Swing Strategy”! Why go so far with the verification? Are you crazy? 😆
Even if people think that, I’m doing it because I want to, so don’t mind me!
If possible, I want to keep the Air and carry over the 11 years of data I’ve accumulated with Fitbit to continue tracking.
But looking at the verification results up until today, Charge 6 is the winner 🏆!
Although it was within the expected range for an ankle measurement, my dear up-and-coming Air, this is just a bit too disappointing as it stands. 💦
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