Galaxy Watch 4: Scientific Blood Pressure Test
ฝัง
- เผยแพร่เมื่อ 12 มิ.ย. 2024
- I tested the Blood Pressure monitor of the Samsung Galaxy Watch 4. Subscribe to my weekly Newsletter(!) on www.robterhorst.com
Instagram: / quantified_scientist
Twitter: @QuantifiedRob
👇 $30 off any new WHOOP membership, affiliate* (paid) link, supports the channel!👇
join.whoop.com/QuantifiedScientist ($30 off any new WHOOP membership)
👇Affiliate link to join WHOOP, support the channel!👇
join.whoop.com/QuantifiedScientist ($30 off any new WHOOP membership)
👇Amazon Affiliate* (paid) links. Supports the channel, doesn't cost you any more!👇
Fitbit Charge 5: geni.us/FitbitCharge5
Fitbit Luxe: geni.us/Fitbit_Luxe
Fitbit Charge 4: geni.us/wjAfjU
Fitbit Sense: geni.us/CSfYQE8
Fitbit Inspire 2: geni.us/iZHlb
Xiaomi Mi Watch: geni.us/Xiaomi_Mi_Watch
Xiaomi Mi Watch Lite: geni.us/XiaomiMiWatchLite
Apple Watch 40 mm: geni.us/0gNGeO
Apple Watch 44 mm: geni.us/7Dom
Huawei Band 6: geni.us/HuaweiBand6
Honor Band 6: geni.us/honorBand6
Want to buy the Galaxy Watch despite me not recommending it:
geni.us/GalaxyWatch4
📸My Gear* (paid links, supports the channel and doesn’t cost you any more)📸
Camera body (main): geni.us/SonyA6600_body
Camera lense (main): geni.us/sony_sel_18-135
Camera (B-roll): geni.us/CanonEosM50MarkII
Light: geni.us/Godox_VL150
Softbox: geni.us/NiceFotoSoftbox
Light stand: geni.us/WalimexLightstand
The EEG tracker I used is called the Hypnodyne ZMax: hypnodynecorp.com/ from @HypnoDyne Corp
⏱️This comparison is part of a larger project where I spend over 11 hours a week tracking everything in my life. If you'd like to know more:
• This mad scientist sca... ⏱️
Timestamps:
00:00 General intro
00:55 Results: Overview
02:11 Results: Details
04:27 Conclusions
🎵Music🎵
(1) Not Without the Rest by Twin Musicom is licensed under a Creative Commons Attribution license (creativecommons.org/licenses/...)
Artist: www.twinmusicom.org/
(2) Wonders by JVNA
(3) Can’t Sleep (TH-cam Audio Library)
(4) Classique (TH-cam Audio Library)
(5) Blurry Vision (TH-cam Audio Library)
Person Waking up Video by Ba Tik from Pexels - วิทยาศาสตร์และเทคโนโลยี
As a data scientist, this channel is definitely GOLD!
Hell yeah!
I noticed that hispanics are really into the data analysis thing.
@@stb3987 Well, just have a look at their diet. LOL!!!!!!
You arent a scientist. You study numbers. Its called math.
I have the galaxy watch 4 but doesn't come with bp monitor app. Which do you recommend?
This channel is great, I wish we could get more reviewers doing actually data-driven tests rather than random opinions, specially for products like these.
This is exactly the type of review I was looking for. Accurate reporting on methodology and results. Thank you!
Please test the ECG as well
Great review. Message to Samsung. Focus on being great at two or three things rather than mediocre at ten. If they can't get the GPS or heart rate tracking spot on, they have no reason to focus on all these fringe features.
The Heart Rate algorithm has changed, can you retest the watch please?
Hey, thank you for all the videos. Finally we can have an objective analysis of this watches features.
I wish you could sometime analize a Ticwatch Pro 3.
Thanks for all the effort.
I never miss your videos. Very informative. Thanks brother
Great job as always!
Thank you for this update. Looking forward to another review in usually new video date.
Thanks for watching!
Wow! Didn’t realize this function was available! Thanks for showing it.
great review !!! you should check the other aspects as well as the heart rate now after the new software update sems to be really good in the gym and other exercises. for sleep i notices some changes
This is the ultimate channel for smartwatch reviews.
Wishing you a 1M sub as a Christmas present.
You are a saint... It's so hard to find good info on this stuff and this video was amazing. I'm going to watch your full review now because I would have bought this watch for blood pressure alone but since it seems like that's not so amazing I'm on the fence.
Thank you for laying it out so scientifically but also so easy to access
Please review Body Composition Galaxy Watch 4.
Would love to see review of the ECG accuracy measurements of different watches that claim to measure ECG
Great and necessary information. Thank you! 👍
I hope you'll be reviewing the Oura Ring 3 when it becomes available! I think only a few more days until pre-orders get shipped right?
Very comprehensive. Thanks.
Great data presentation! I was going to buy just because that function, but now.... Thanks!
I loooove your videos! This is the most informative channel I've found when looking for detailed information about fitness bands. Could you pleeeease do an acurracy ranking with the top 10 fitness bands 2021??? From now on I will only watch your videos before buying any more fitness bands ever and ignore the other videos out there because you are the only one who tests the real accuracy of every important aspect of these fitness bands.
Would be nice to see correlation data during or after exercise, when blood pressure is much higher.
Also, would calibration with data after exercise improve overall accuracy or not?
Please use the same scale and range for both axis.
Thanks for the top grade work! 👍
I wonder can you redo these tests in a few months or so? To see if it can improve over time with software updates. Not only for this, but other smartwatches too.
Great video as always
Bumping this. I'd love to see if they've improved any of this, and if you can do ongoing calibrations to continue to improve blood pressure readings or it's only one time.
Very insightful.
Great video 👍
Review for Amazfit GTR 3 Pro coming up anytime soon?😆
I love this channel. Entertaining Science 🙌 Great stuff Rob and team.
i subscribed soon as he said i dont want to waste your time. thank you
Hey, great surprise to find one of your vids on a Wednesday. Thanks a lot! Any chance you do a review of the sleep detection in the Coros Apex watch you reviewed the other day?
Yes, I thought I'd get this out before Black Friday, in case people with Blood Pressure issues were planning to spend a significant amount of money on the watch. At the moment I have no Coros devices planned in my near-future videos. At the moment I am testing the Amazfit GTR3, Huawei Watch 3, Amazfit Neo, Fitbit Charge 5 and a few others already. Of course also the new Oura Ring 3 and Whoop 4.0 when they arrive
Any chance you can take a look at the Amazon Halo series with the view coming out soon?
@@TheQuantifiedScientist great to hear that you are testing GTR 3. I will wait for your review of GTR 3 before I decide to buy.
Hello! Great video as always.Do you see any improvement in the GPS and other Sensors after the updates?
Hi Andre, I am currently testing it
Love all your videos!! I'm really curious about the Amazon Halo sleep stuff as well.
I wish more companies had a screenless band like the Halo and Whoop. A Fitbit that looks like a simple strap would be perfect for me.
Great vid bruv
I mean, this video was awesome. Is there any chance of redoing this analysis with newer versions of the Galaxy Watch?
Great video as always. I recommend to use a sphygmomanometer as a reference blood pressure monitor. For me I have issues with my blood pressure and my certified digital blood pressure monitor rarely gave me accurate measurements while it was okey with other people. Maybe because I have some irregular heart beats but nevertheless using sphygmomanometer is better. Also I noticed it gave you a reading of 136 over 65 and I am quite sure that was a bogus reading in terms of diastolic reading
Great job! Greetings from Italy
Thanks😊
You truly are the best reviewer of these watches health features! 😊 Your results probably corresponding with why Samsung could not release the BP because it has not past test.
Good job again 👍
Thank you! Cheers!
thanks alot ❤
Please, is there a possibility to retest the heart rate sensor during exercise. Some say that the latest update fixed the problem
Thank you, Mr TSS ( The Smiling Scientist). Good job.
Very interesting video. Thanks ^^
Hi Rob another great video. Have you though of doing a video for the blood pressure devise AKtiia . 24/7 wrist with 7 days battery.
Were you able to gather any insight into what might make a calibration session most accurate? I also wonder why you don't take multiple measurements at each calibration?
I only have an end user knowledge of how these features work, which is to say I really don't know at all! But I'd think you'd get greater accuracy if samsung had you test a few times, starting at rest and increasing blood pressure through activity and returning to rest?
Thanks for the data!! I'm curious about the reference device. Is it the gold standard?
Thank you for another great video
As you know the mechanism to measure blood pressure is pressing on an artery to be occluded and then releasing the pressure gradually until blood flow overcome the artery resistance. This point is Systolic blood pressure. I haven’t seen yet a medical device to measure blood pressure without pressing & depressing an arterial line.
🙏🙏🌺🌺🌺🌺🙏🙏
Then you are not familiar with art-lines nor laser doppler flowmetery.
Both are medical devices which can measure blood pressure even more accurately - and not via a cuff.
@@mitchelltanner6306 I know about doppler ultrasound not laser , measuring RBCs flow speed and directional of blood flow through cardiac valves.
But I dont know about laser role in BP!! calculating-measuring
Yes, but algorithms cannot fully compensate for peripheral resistance or (for example) interference from venous return when measuring the pressure wave - leaving ultrasound somewhat less accurate than the cuff or laser - but of course great for pressure changes and flow for the cardiologist.
The automated blood pressure machines are notoriously unreliable. If I'm ever concerned enough about a patient's blood pressure, I want to get a manual check.
Is there any way you can retest this maybe with fewer data points but by using a manual stethoscope and sphygmomanometer? I think you'll get much more accurate results that way and get a much more reliable reference.
Second that. I also would like to see measurements after/during a workout where blood pressure is significantly higher. Would not hurt to have another reference device and see how much they differ from one another. Also there are differences between arms anyway and both deviced used in the video use diffent locations for the measurement. There are a lot of sources for difference between the devices. If the measurements of both or more devices are within a ~10-15mmHg difference of each other across a higher range of pressure levels I would see that as absolutely acceptable.
Would defo need a second person to help.
Hello, incredible video. Would you be able to make similar video of the Huawei Watch D ?, as it seems it has a small pump which could actually provide accurate readings. Thanks for sharing your knowledge.🙂
For calibration, probably you can do with two sitting measurements and one after exercise (increasing BP) to increase accuracy.
Interesting video! Did you happen to find a white paper on the sensor somewhere? The measurement technique of the watch seems somehow unclear to me
Hi, many thanks for the video. I need your advice please. I bought Galaxy watch 5 mainly for checking BP but I am getting very inconsistent results. Sometimes it's lot higher and other times much lower. Almost always with a difference of 15 points in Systolic and 10 points in Diastolic.
Also what's more worrying is that sometimes it gives exactly the same reading as previously taken reading.
Did you come across such problems? and anything you could suggest to improve the readings would be greatly appreciated. Thanks again
Great, thank you for following up the previous review. So it's getting better, but still not good enough. The Galaxy Watch 4 seems to be a continuous development project.
Just found your channel, and finished watching the full review, then found out this. This is one of the best reviews I've ever seen about the watch.
Is there any chance that you'll review the health sensors again? There has been some updates, it seems. Maybe into the near future.
Hi, Rob, could you please test AsusViwatch BP/SP or their new version "5"? I have VivoWatch BP and found that its blood pressure measurement is quite close to cuff machine. It also measures continuously, which Galaxy Watch don't. Keep up your great work!!!
Is this an optical sensor, ot a physical pressure sesonso? And if it is physical sensor does it depend on location and placement?
Although I appreciate the data analysis, I have some doubts concerning metrology. I have an Omron bpm and find it somewhat inconsistent between sequential measurements. So I wonder how much of the variation (R2) is caused by the reference?
On a different topic, how does the sensor work? Does it have a manifold inside the band?
I have a two omron blood pressure cuffs, one wrist and one arm, and I find with those readings can vary widely from reading to reading as well. This is an important methodological question.
I love you for I don’t wanna waste your time
Here’s a sub
Now that the galaxy watch 6 is out, have there been any improvements in the BP feature?
thanks
Can you please enter the BP monitoring space too - their comparision, analysis.
Cant find any quantitative analysis videos for BP monitoring out there.
Ex: Withings BPM connect, OMRON device series etc.
Good video, but one problem is that most (perhaps all) automatic blood pressure cuffs slightly overestimate blood pressure (including the Omron device). The gold standard for measuring blood pressure is a manual inflatable cuff & stethoscope (you can learn this skill quite quickly). I'd also love to get testing results for the Akkia blood pressure device that has now been approved in in Europe.
You just need to keep calibrating the watch for every measure, and you're good to go :)
Nice video, thanks, I was wondering, and understand why the blood pressure was not released everywhere.
What's the point of having to recalibrate every use? You might as well use a stand alone bluetooth BP monitor and call it a day?
@@melvinp.h.3069 exactly, that was my point, a bit sarcastic admittedly.
What is your personal opinion on watches that can measure stress ? Are they reliable?
I'd like to buy a watch that can measure my sleep patterns..something like fitbit charge 4 or 5...but I'm also interested in watches that say they can measure stress levels ?
I'm someone who suffers from anxiety and is under a lot of stress. That's the primarily reason, I also tend to grind my teeth and have facial pain and it usually goes off at night time.
Thankyou .... 👍👍👍👍
Would be great to see some color separation or different symbols for the plot points on the systolic and diastolic charts so we could see separation of watch vs cuff.
Dang, I really wanted this to work. Hopefully the tech will improve.
Any chance of the amazfit gtr 3 pro being reviewed?
One claim is that this generation Amazfit closely matches the Polar H10 in average heart rate accuracy.
With Notify for Amazfit the HR and oximetry can supposedly run 24/7 with HR sampling every second.
Does being off by 10 that significant through? Is the watch good enough?
any possibility to re-test the heart rate monitor during workout? the recent JA update with new algorithm solved heart rate drop out for me and has been very consistently monitoring the heart rate for entire workout, but I really wanted to know if it's correct or just filler data. Thanks!
So now no issuse with HR after updates with you?
I want to buy it but I am very hesitant because of this problem
@@namnta I will buy it even though I know there are some issues with it. Like if you want the best, go for an Apple watch but I don't have an iPhone and am not willing to shell out a lot for both the phone and watch so I'm just gonna make some compromise and settle with the galaxy. Like I have the thought that tech keeps updating so even the best of today will be obsolete in the near future.
You could get a polar h10 chest strap for yourself to test it 😉 😝 honestly I have a fitbit device and this is why I'm waiting on pulling the trigger for either this or a sense 2 I want a definitive improvement (similar to Apple watch) before pulling the trigger on a new smart watch.
@@namnta yes no more hr tracking issues, it used to drop out w intense hand movements, but after the update it never dropped out. but i'd like to see if the data still reflect accurately as it used to
@@SpaceMagicStorm i could, but the whole point of asking to verify the data is to save money from buying polar chest strap and test myself...
hi, please make a scientific test of the readings of the HUAWEI WATCH D which measures the blood pressure monitor with an actual inflating cuff
You are legendary
Hi, is there possibility to test for oppo watch in near future?
Thanks.
I'm not sure if I'm missing something, but aren't those little BP monitors also known to be innacurate? Shouldn't the comparison have been with a medical/ mercury BP monitor?
....this means that the Galaxy Watch 4 us not worth its weight in dollars!😂
Another great review, and not only because it confirms what seemed obvious beforehand: wrist based BP measurements are rubbish. Fortunately, we now have access to a man who actually finds out! Hoping for a review of the Huawei GT3!
any chane you could do the Aktiia blood pressure device ?
Please can you recommend a reliable smartwatch with reliable blood pressure reporting
Your videos are incredible. I don’t suppose you plan on going the Huawei Watch 3 anytime soon before I buy it? 😂
why it required every month Calibration if it can itself, i think it taking average based on the Calibrated entry data. ?
Money saved, thanks!
Could you retested the Heart Rate sensor, the latest update should've improved it.
Digital BP moniter itself has an error of ±15 hg pressure.. try using manual next time. Good work btw 👍
Hey Bro.. Great video..
Can you suggest me a smart watch with better blood pressure measurement and abnormal heart rate detection. It will be for my parents.. So, it's fine it if is not so great looking.. But, it will be good if it is like smart watch so that it does not seem bulky and they can wear it in home or when we are at someone else's place for functions etc.
Thanks 😍
If values are too low. Bias the manual calibration values slightly higher, to split the +/- variance. Problem solved. Measuring blood pressure is fickle at the best of times.
Do I have to go into developer mode and all that to use the blood pressure app
I would love to see this with the Aktiia device which is said to be clinically validated
Does anyone know how to check bp on the watch? Is there a specific app?
How do you know whether the Omron is accurate?
Please mention which smart watch gives most accurate hr, bp, spo2, with atleast 5atm and 1week battery life on heavy usage.
No apple products Please.
What model of Omron did You use
Is this feature available in the US?
great review thanks!
Aug 5 2023 I just called SAMSUNG TECH because my BLOOD PRESSURE feature on Samsung watch 5 is missing. The tech tried to help me reinstall it but then found with the last Samsung UPDATE the feature was REMOVED for blood pressure monitoring by the FDA? Strange because I still ahave that feature on a different brand (cheaper) watch that I own.
Can you test the BMI?
Please review realme and dizo smart watch
How do you account during the turn of the century 1900 we cook with fat and consume huge amount of meat but virtually no cases of a heart attacks or strokes? Eating animal fat does not make you fat. Our problem started during the 1970s when we removed animal fat and substituted sugar, seed oil and highly processed carbs.
Lovely review! Any intentions on reviewing Amazfit GTR 3 PRO? It seems they have improved heart rate monitoring A LOT! I'll only believe after you test it though hahahaha
Could you please plot the graph with zero on the axis? or maybe error margins?
On first glance it seemed like the watch was just putting random numbers, but took me a while to understand that the device isn't that bad, and the axis are skewed. The numbers lie within +-10 of the actual number.
Yeah, at least making the scale the same on both axis would help, they're not very clear
I'm in the USA is this not available here?
Should not this be measured on left hand?
Is it possible that when you use both Omron and Galaxy exactly at the same time (I assume on different arms), the pressure from the Omron cuff interferes with the measurement of Galaxy 4?
You're right, you should always measure on the same arm. Left arm is preferable. There's no need to perform both measurements at the same time. Also you should do multiple reference measurements, I'd do three measurements three times a day (and maybe once on Suturday and once on Monday because of stress levels) and use the average for calibration.
Has the updated HR algorithm made any difference in accuracy on the GS4? Also can you test the tic watch pro 3
I am testing the new software at the moment. I still need to analyze the results, so stay tuned!
@@TheQuantifiedScientist Awesome!!! Your videos are the best