Jawbone Heart Health Series

Finding Meaning in Resting Heart Rate – Heart Health Series

The human body is a complex system. Several physiological signals contribute to our understanding of our overall well-being. Everything you do matters, especially when it comes to heart health. The walks, the runs, the naps, the smiles, the water and the chocolate — every single decision you make counts.

UP helps you improve your long term heart health by:

  1. Measuring reliable heart health signals.
  2. Informing you about the impacts of your habits on your heart health.
  3. Helping you develop heart-healthy habits.

A Reliable Signal

Our first step in the heart health journey is measuring resting heart rate – the number of times your heart beats while your body is at complete rest. It is most accurately measured as you wake up. While heart rate technically can be measured throughout the day with an ‘always-on’ solution, there are two main compromises that come with that.

First – size and wearability. Continuous monitoring takes up a lot of battery. So these always-on devices are OK for the half of the time you can wear them –  not so good for the other half when you’re charging them. And because they are so big – you are not likely to wear them to bed, so you won’t get a true resting heart rate reading either.

Second – reliability. You only have to do a quick search of some of the reviews of these always-on devices to see that many of their readings continue to be erratic.

With UP3 and UP4, out of the box, we capture your resting heart rate. Since resting heart rate is taken each morning before you wake up, move, eat, act or even think, it is the most consistent, trackable measure of heart health. It’s a universal measure since it works equally well for days when you workout and days when you don’t.

Resting Heart Rate - Waking UP

UP3 and UP4 also track your heart rate throughout the night, and uses that data to determine your  REM sleep, Light sleep and Deep sleep. See here for details.

Jawbone - Resting Heart Rate - Sleeping

It All Matters

Every decision you make influences your heart. Research indicates the impact of a wide range of activities on your resting heart rate including:

  • Food – Healthy nutrition decisions can ensure clearer arteries. The less blockage in arteries, the easier it is for your blood to flow through your body.1
  • Hydration – A hydrated body keeps blood at the right amount of viscosity. This also allows the blood to easily flow through the body and puts less burden on the heart.2
  • Stress & Anxiety – Stress and anxiety can burden the cardiovascular system and increase heart rate. Managing day-to-day stress in a healthy way can help relieve this burden.3
  • Sleep – Establishing a consistent bedtime and wake time is good for the heart.45
  • Exercise – Frequent aerobic exercise (at least 3 times a week) can help strengthen the heart.6
  • Smoking – Smoking burdens the cardiovascular system and increases your resting heart rate.7

Since every decision you make can be crucial, UP shows you how what you eat, when you sleep, and how you move impacts your heart health through resting heart rate. We do this in three parts:

  • Measuring your baseline.
  • Building awareness of your habits.
  • Understanding and managing the moments when you break routine.

Measuring Your Baseline – Your resting heart rate is unique to you. It depends on your body, your lifestyle, your genetics and a number of other factors. UP measures your resting heart rate on Day 1.

UP3_Resting Heart Rate_Loop

Building Awareness – Since health is interconnected, and a wide range of activities impact your heart health, Smart Coach brings awareness to the impacts of your lifestyle habits on your heart health.

Resting Heart Rate_Push Notifications_LOOP

Healthy sleep leads to a healthy heart. UP3 and UP4 measure your heart rate  throughout the night to track sleep phases. Then Smart Coach helps you understand the connection between your sleep habits and your heart health.

UP3_Advanced Sleep_Loop

Over time, Smart Coach can also help you understand the relationship between your activity levels and your long term heart health.

Resting Heart Rate_Trend

Understanding Your Deviations – In the long run, resting heart rate trends can provide insightful information about your heart health. An upward trend could indicate poor heart health. Timely information that teaches you to manage your upward trend can help you become healthier.

Resting Heart Rate_Homescreen

If dehydration is causing an upward movement, Smart Coach may recommend a “Today I Will” that challenges you to drink more water throughout the day, leading to a more restful night of sleep, and a lower resting heart rate.

Hydration Insight - Jawbone - Smart Coach

If your Mondays are stressful and Smart Coach notices an increase in heart rate, Smart Coach can recommend tips.

Sress Not Insight - Jawbone - Smart Coach

Over time, Smart Coach notifies you of important trends in your data. It’s this active coaching that improves your overall well being and optimizes your heart health.

The Right Stuff Insight - Jawbone - Smart Coach

We designed UP to teach you the skills you need to navigate and improve your health over time. We believe resting heart rate is the purest and consistent measure to achieve this.

This is just the beginning of the possibilities of this rich multi-sensor platform.

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1. Effects of Omega-3 Fatty Acids on Resting Heart Rate, Heart Rate Recovery After Exercise, and Heart Rate Variability in Men With Healed Myocardial Infarctions and Depressed Ejection Fractions James H. O’Keefe, Jr., MDa,b, Hussam Abuissa, MDa,b, Antonio Sastre, PhDc , David M. Steinhaus, MDa,b, and William S. Harris, PhDa,b,

2. http://www.heart.org/HEARTORG/GettingHealthy/PhysicalActivity/FitnessBasics/Staying-Hydrated—Staying-Healthy_UCM_441180_Article.jsp

3. Depressed mood is related to high frequency heart rate variability during stressors.Hughes JW , Stoney CM.

4. Sleep disturbance in association with elevated pulse rate for prediction of mortality–consequences of mental strain?
Nilsson PM, Nilsson JA, Hedblad B, Berglund G.

5. Gender differences in the prospective associations of self-reported sleep quality with biomarkers of systemic inflammation and coagulation: Findings from the Heart and Soul Study – Aric A. Prather, Elissa S. Epel, Beth E. Cohen, Thomas C. Neylan, Mary A. Whooley

6. Exercise training reduces resting heart rate via downregulation of the funny channel HCN4 Alicia D’Souza1,*, Annalisa Bucchi2,*, Anne Berit Johnsen3,*, Sunil Jit R.J. Logantha1,*, Oliver Monfredi1, Joseph Yanni1, Sukhpal Prehar1, George Hart1, Elizabeth Cartwright1, Ulrik Wisloff3, Halina Dobryznski1,Dario DiFrancesco2, Gwilym M. Morris1 & Mark R. Boyett1

7. Effects of smoking on heart rate at rest and during exercise, and on heart rate recovery, in young adults. Papathanasiou G1, Georgakopoulos D, Papageorgiou E, Zerva E, Michalis L, Kalfakakou V, Evangelou A.

About The Author

Jayanth Chakravarthy

At Jawbone, Jayanth is focused on unlocking exciting new experiences deeply rooted in sensors, hardware, and wearables. Previously, he was @ Cisco designing telepresence, @ Abbott inventing heart implants and @ D-Rev developing affordable medical devices for poor. Ping him (@cr_jayanth) if you want to chat about wearables.