MacLife - UK (2020-04)

BY FLASHING

LED LIGHTS,

APPLE WATCH

CAN WORK

OUT YOUR

HEART RATE

WHILE ITS ORIGINAL

intention was not a focus on

well–being, the Apple Watch

has now become synonymous

zlwk#khdowk#dqg#Ľwqhvv1#Wkhuh#lv#rqh#

sk|vlfdo#phdvxuh#wkdw#wkh#ghylfh#kdv#

packed since its launch in 2014, though:

khduw#udwh#wudfnlqj1#Zkloh#wkh#khduw#udwh#

lvqġw#dfwxdoo|#wkh#prvw#uholdeoh#phdvxuh#

ri#d#shuvrqġv#fduglrydvfxodu#khdowk/#lwġv#

wkh#vlpsohvw#wr#phdvxuh/#dqg#lw#fdq#

surylgh#d#edvlf#lqglfdwlrq#ri#d#srvvleoh#

phglfdo#frqglwlrq1#

Dssoh#kdv#lqyhvwhg#khdylo|#lq#phglfdo#

whfkqrorj|#lq#dq#hļruw#wr#pdnh#wkh#khduw#

udwh#wudfnhu#dv#dffxudwh#dv#srvvleoh1#Dqg#

wkdw#whfk#dovr#irupv#wkh#edfnerqh#iru#wkh#

pruh#whfkqlfdoo|Ğghpdqglqj#HFJ#

+hohfwrfduglrjudp,#wudfnlqj/#zklfk#Dssoh#

lqfrusrudwhg#lq#Dssoh#Zdwfk#Vhulhv#71#

HEART RATE TRACKING

Vr#qrz#khuhġv#wkh#vflhqfh#elw=#

skrwrsohwk|vprjudsk|#+SSJ,#lv#d#phwkrg#

ri#ghwhfwlqj#eorrg#yroxph#fkdqjhv#lq#

d#plfurydvfxodu#ehg#ri#wlvvxh/#doorzlqj#

d#shuvrqġv#khduw#udwh#wr#eh#phdvxuhg#qrq0#

lqydvlyho|#rq#wkh#vnlqġv#wlvvxh1#Dqg#wklv#

lv#krz#wkh#khduw#udwh#wudfnhu#rq#wkh#

Zdwfk#zrunv1

Heart rate tracking and ECG

Taking care of your heart is easy with the Apple Watch

Dffruglqj#wr#Dssoh=#ģEorrg#lv#uhg#

ehfdxvh#lw#uhľhfwv#uhg#oljkw#dqg#devruev#

juhhq#oljkw1#Dssoh#Zdwfk#xvhv#juhhq#

OHG#oljkwv#sdluhg#zlwk#oljkwĞvhqvlwlyh#

photodiodes to detect the amount of

eorrg#ľrzlqj#wkurxjk#|rxu#zulvwĩ#Zkhq#

|rxu#khduw#ehdwv/#wkh#eorrg#ľrz#lq#|rxu#

zulvw#ğ#dqg#wkh#juhhq#oljkw#devruswlrq#

ğ#lv#juhdwhu1#Ehwzhhq#ehdwv/#lwġv#ohvv1#

E|#ľdvklqj#lwv#OHG#oljkwv#kxqguhgv#ri#

wlphv#shu#vhfrqg/#Dssoh#Zdwfk#fdq#

fdofxodwh#wkh#qxpehu#ri#wlphv#wkh#khduw#

ehdwv#hdfk#plqxwh1Ĥ#

Wkhvh#OHGv#dqg#lqiuduhg#glrghv#duh#

krxvhg#lq#wkh#fhudplf#edfn#ri#wkh#Zdwfk1#

Wkh#lqiuduhg#lv#wkh#sulpdu|#v|vwhp/#dqg#

wdnhv#d#uhdglqj#hyhu|#43#plqxwhv#lq#wkh#

edfnjurxqg#hyhq#li#wkh#Zdwfk#lv#qrw#

lq#xvh1#Wkh#OHGv#nlfn#lq#dv#d#idlo0vdih/#

zkhq#wkh#gdwd#iurp#wkh#lqiuduhg#vhhpv#

lqfrqvlvwhqw1#Wkh#OHGv#duh#xvhg#wr#

phdvxuh#khduw#udwh#gxulqj#zrunrxwv/#

euhdwkh#vhvvlrqv#dqg#khduw#udwh#yduldelolw|#

whvwv#+wkh#yduldwlrq#lq#wkh#wlph#lqwhuydo#

ehwzhhq#wzr#frqvhfxwlyh#khduwehdwv,1#

ECG TRACKING

Dq#hohfwurfduglrjudp/#zklfk#phdvxuhv#

|rxu#khduw#udwh/#uk|wkp#dqg#hohfwulfdo#

dfwlylw|/#lv#d#olwwoh#pruh#frpsolfdwhg1#HFJ#

YOU WILL LEARN

How heart tracking

and ECG work on the

Apple Watch; how to take

an ECG reading

HOW IT

WORKS

KEY FACT

Photoplethysmography

(PPG) used to measure

heart rate is similar to a

pulse oximeter. The

system illuminates the

skin and measures change

in light absorption as

blood circulates.

Measuring ECG on the Apple

Watch requires the wearer

to maintain a closed circuit

Image rights: Apple.

Create

96 APR 2020 maclife.com