Thinking of using an activity tracker to achieve your exercise goals? Here’s where it can help – and where it probably won’t
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It’s that time of year when many people are getting started on their resolutions for the year ahead. Doing more physical activity is a popular and worthwhile goal.
If you’re hoping to be more active in 2024, perhaps you’ve invested in an activity tracker, or you’re considering buying one.
But what are the benefits of activity trackers? And will a basic tracker do the trick, or do you need a fancy one with lots of features? Let’s take a look.
Why use an activity tracker?
One of the most powerful predictors for being active is whether or not you are monitoring how active you are.
Most people have a vague idea of how active they are, but this is inaccurate a lot of the time. Once people consciously start to keep track of how much activity they do, they often realise it’s less than what they thought, and this motivates them to be more active.
You can self-monitor without an activity tracker (just by writing down what you do), but this method is hard to keep up in the long run and it’s also a lot less accurate compared to devices that track your every move 24/7.
By tracking steps or “activity minutes” you can ascertain whether or not you are meeting the physical activity guidelines (150 minutes of moderate to vigorous physical activity per week).
It also allows you to track how you’re progressing with any personal activity goals, and view your progress over time. All this would be difficult without an activity tracker.
Research has shown the most popular brands of activity trackers are generally reliable when it comes to tracking basic measures such as steps and activity minutes.
But wait, there’s more
Many activity trackers on the market nowadays track a range of other measures which their manufacturers promote as important in monitoring health and fitness. But is this really the case? Let’s look at some of these.
Resting heart rate
This is your heart rate at rest, which is normally somewhere between 60 and 100 beats per minute. Your resting heart rate will gradually go down as you become fitter, especially if you’re doing a lot of high-intensity exercise. Your risk of dying of any cause (all-cause mortality) is much lower when you have a low resting heart rate.
So, it is useful to keep an eye on your resting heart rate. Activity trackers are pretty good at tracking it, but you can also easily measure your heart rate by monitoring your pulse and using a stopwatch.
Heart rate during exercise
Activity trackers will also measure your heart rate when you’re active. To improve fitness efficiently, professional athletes focus on having their heart rate in certain “zones” when they’re exercising – so knowing their heart rate during exercise is important.
But if you just want to be more active and healthier, without a specific training goal in mind, you can exercise at a level that feels good to you and not worry about your heart rate during activity. The most important thing is that you’re being active.
Also, a dedicated heart rate monitor with a strap around your chest will do a much better job at measuring your actual heart rate compared to an activity tracker worn around your wrist.
Maximal heart rate
This is the hardest your heart could beat when you’re active, not something you could sustain very long. Your maximal heart rate is not influenced by how much exercise you do, or your fitness level.
Most activity trackers don’t measure it accurately anyway, so you might as well forget about this one.
VO₂max
Your muscles need oxygen to work. The more oxygen your body can process, the harder you can work, and therefore the fitter you are.
VO₂max is the volume (V) of oxygen (O₂) we could breathe maximally (max) over a one minute interval, expressed as millilitres of oxygen per kilogram of body weight per minute (ml/kg/min). Inactive women and men would have a VO₂max lower than 30 and 40 ml/kg/min, respectively. A reasonably good VO₂max would be mid thirties and higher for women and mid forties and higher for men.
VO₂max is another measure of fitness that correlates well with all-cause mortality: the higher it is, the lower your risk of dying.
For athletes, VO₂max is usually measured in a lab on a treadmill while wearing a mask that measures oxygen consumption. Activity trackers instead look at your running speed (using a GPS chip) and your heart rate and compare these measures to values from other people.
If you can run fast with a low heart rate your tracker will assume you are relatively fit, resulting in a higher VO₂max. These estimates are not very accurate as they are based on lots of assumptions. However, the error of the measurement is reasonably consistent. This means if your VO₂max is gradually increasing, you are likely to be getting fitter.
So what’s the take-home message? Focus on how many steps you take every day or the number of activity minutes you achieve. Even a basic activity tracker will measure these factors relatively accurately. There is no real need to track other measures and pay more for an activity tracker that records them, unless you are getting really serious about exercise.
Corneel Vandelanotte, Professorial Research Fellow: Physical Activity and Health, CQUniversity Australia
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Dried Apricots vs Dried Prunes – Which is Healthier?
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Our Verdict
When comparing dried apricots to dried prunes, we picked the prunes.
Why?
First, let’s talk hydration. We’ve described both of these as “dried”, but prunes are by default dried plums, usually partially rehydrated. So, for fairness, on the other side of things we’re also looking at dried apricots, partially rehydrated. Otherwise, it would look (mass for mass or volume for volume) like one is seriously outstripping the other even if some metric were actually equal, just because of water-weight in one and not the other.
Illustrative example: consider, for example, that the sugar in a bunch of grapes or a handful of raisins can be the same, not because they magically got more sugary, but because the water was dried out, so per mass and per volume, there’s more sugar, proportionally.
Back to dried apricots and dried prunes…
You’ll often see these two next to each other in the heath food store, which is why we’re comparing them here.
Of course, if it is practical, please by all means enjoy fresh apricots and fresh plums. But we know that life is not always convenient, fruits are not in season growing in abundance in our gardens all year round, and sometimes we’re stood in the aisle of a grocery store, weighing up the dried fruit options.
- Apricots are well-known for their zinc, potassium, and vitamin A.
- Prunes are well-known for their fiber.
But that’s not the whole story…
- Apricots outperform prunes for vitamin A, and also vitamins C and E.
- Prunes take first place for vitamins B1, B2, B3, B5, B6, and K, and also for minerals calcium, copper, iron, magnesium, manganese, phosphorus, potassium, sodium, and zinc.
- Prunes also have about 3x the fiber, which at the very least offsets the fact that they have 3x the sugar.
Once again, sugar in fruit is healthy (sugar in fruit juices is not*, though, so enjoy prunes rather than just prune juice, if you can) and can take its rightful place as providing a significant portion of our daily energy needs, if we let it.
*It’s the same sugar, just the manner of delivery changes what it does to our liver and our pancreas; see:
Which Sugars Are Healthier, And Which Are Just The Same?
In summary…
Dried apricots are great (fresh are even better), and yet prunes outperform them by most metrics on a like-for-like basis.
Prunes have, on balance, a lot more vitamins and minerals, as well as more fiber and energy.
Want to get some?
Your local supermarket probably has them, and if you prefer having them delivered to your door, then here’s an example product on Amazon
Enjoy!
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Rehab Science – by Dr. Tom Walters
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Many books of this kind deal with the injury but not the pain; some source talk about pain but not the injury; this one does both, and more.
Dr. Walters discusses in detail the nature of pain, various different kinds of pain, the factors that influence pain, and, of course, how to overcome pain.
He also takes us on a tour of various different categories of injury, because some require very different treatment than others, and while there are some catch-all “this is good/bad for healing” advices, sometimes what will help with one injury with hinder healing another. So, this information alone would make the book a worthwhile read already.
After this two-part theory-heavy introduction, the largest part of the book is given over to rehab itself, in a practical fashion.
We learn about how to make an appropriate rehab plan, get the material things we need for it (if indeed we need material things), and specific protocols to follow for various different body parts and injuries.
The style is very much that of a textbook, well-formatted and with plenty of illustrations throughout (color is sometimes relevant, so we recommend a print edition over Kindle for this one).
Bottom line: if you have an injury to heal, or even just believe in being prepared, this book is an excellent guide.
Click here to check out Rehab Science, to overcome pain and heal from injury!
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Benefits of Different Tropical Fruits
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It’s Q&A Day at 10almonds!
Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!
In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small
❝Would very much like your views of the benefits of different tropical fruits. I do find papaya is excellent for settling the digestion – but keen to know if others have remarkable qualities.❞
Definitely one for a main feature sometime soon! As a bonus while you wait, pineapple has some unique and powerful properties:
❝Its properties include: (1) interference with growth of malignant cells; (2) inhibition of platelet aggregation*; (3) fibrinolytic activity; (4) anti-inflammatory action; (5) skin debridement properties. These biological functions of bromelain, a non-toxic compound, have therapeutic values in modulating: (a) tumor growth; (b) blood coagulation; (c) inflammatory changes; (d) debridement of third degree burns; (e) enhancement of absorption of drugs.❞
*so do be aware of this if you are on blood thinners or otherwise have a bleeding disorder, as you might want to skip the pineapple in those cases!
Source: Bromelain, the enzyme complex of pineapple (Ananas comosus) and its clinical application. An update
Enjoy!
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When Age Is A Flexible Number
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Aging, Counterclockwise!
In the late 1970s, Dr. Ellen Langer hypothesized that physical markers of aging could be affected by psychosomatic means.
Note: psychosomatic does not mean “it’s all in your head”.
Psychosomatic means “your body does what your brain tells it to do, for better or for worse”
She set about testing that, in what has been referred to since as…
The Counterclockwise Study
A small (n=16) sample of men in their late 70s and early 80s were recruited in what they were told was a study about reminiscing.
Back in the 1970s, it was still standard practice in the field of psychology to outright lie to participants (who in those days were called “subjects”), so this slight obfuscation was a much smaller ethical aberration than in some famous studies of the same era and earlier (cough cough Zimbardo cough Milgram cough).
Anyway, the participants were treated to a week in a 1950s-themed retreat, specifically 1959, a date twenty years prior to the experiment’s date in 1979. The environment was decorated and furnished authentically to the date, down to the food and the available magazines and TV/radio shows; period-typical clothing was also provided, and so forth.
- The control group were told to spend the time reminiscing about 1959
- The experimental group were told to pretend (and maintain the pretense, for the duration) that it really was 1959
The results? On many measures of aging, the experimental group participants became quantifiably younger:
❝The experimental group showed greater improvement in joint flexibility, finger length (their arthritis diminished and they were able to straighten their fingers more), and manual dexterity.
On intelligence tests, 63 percent of the experimental group improved their scores, compared with only 44 percent of the control group. There were also improvements in height, weight, gait, and posture.
Finally, we asked people unaware of the study’s purpose to compare photos taken of the participants at the end of the week with those submitted at the beginning of the study. These objective observers judged that all of the experimental participants looked noticeably younger at the end of the study.❞
Remember, this was after one week.
Her famous study was completed in 1979, and/but not published until eleven years later in 1990, with the innocuous title:
Higher stages of human development: Perspectives on adult growth
You can read about it much more accessibly, and in much more detail, in her book:
Counterclockwise: A Proven Way to Think Yourself Younger and Healthier – by Dr. Ellen Langer
We haven’t reviewed that particular book yet, so here’s Linda Graham’s review, that noted:
❝Langer cites other research that has made similar findings.
In one study, for instance, 650 people were surveyed about their attitudes on aging. Twenty years later, those with a positive attitude with regard to aging had lived seven years longer on average than those with a negative attitude to aging.
(By comparison, researchers estimate that we extend our lives by four years if we lower our blood pressure and reduce our cholesterol.)
In another study, participants read a list of negative words about aging; within 15 minutes, they were walking more slowly than they had before.❞
Read the review in full:
Aging in Reverse: A Review of Counterclockwise
The Counterclockwise study has been repeated since, and/but we are still waiting for the latest (exciting, much larger sample, 90 participants this time) study to be published. The research proposal describes the method in great detail, and you can read that with one click over on PubMed:
It was approved, and has now been completed (as of 2020), but the results have not been published yet; you can see the timeline of how that’s progressing over on ClinicalTrials.gov:
Clinical Trials | Ageing as a Mindset: A Counterclockwise Experiment to Rejuvenate Older Adults
Hopefully it’ll take less time than the eleven years it took for the original study, but in the meantime, there seems to be nothing to lose in doing a little “Citizen Science” for ourselves.
Maybe a week in a 20 years-ago themed resort (writer’s note: wow, that would only be 2004; that doesn’t feel right; it should surely be at least the 90s!) isn’t a viable option for you, but we’re willing to bet it’s possible to “microdose” on this method. Given that the original study lasted only a week, even just a themed date-night on a regular recurring basis seems like a great option to explore (if you’re not partnered then well, indulge yourself how best you see fit, in accord with the same premise; a date-night can be with yourself too!).
Just remember the most important take-away though:
Don’t accidentally put yourself in your own control group!
In other words, it’s critically important that for the duration of the exercise, you act and even think as though it is the appropriate date.
If you instead spend your time thinking “wow, I miss the [decade that does it for you]”, you will dodge the benefits, and potentially even make yourself feel (and thus, potentially, if the inverse hypothesis holds true, become) older.
This latter is not just our hypothesis by the way, there is an established potential for nocebo effect.
For example, the following study looked at how instructions given in clinical tests can be worded in a way that make people feel differently about their age, and impact the results of the mental and/or physical tests then administered:
❝Our results seem to suggest how manipulations by instructions appeared to be more largely used and capable of producing more clear performance variations on cognitive, memory, and physical tasks.
Age-related stereotypes showed potentially stronger effects when they are negative, implicit, and temporally closer to the test of performance. ❞
(and yes, that’s the same Dr. Francesco Pagnini whose name you saw atop the other study we cited above, with the 90 participants recreating the Counterclockwise study)
Want to know more about [the hard science of] psychosomatic health?
Check out Dr. Langer’s other book, which we reviewed recently:
The Mindful Body: Thinking Our Way to Chronic Health – by Dr. Ellen Langer
Enjoy!
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Calm For Surgery – by Dr Chris Bonney
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As a general rule of thumb, nobody likes having surgery. We may like the results of the surgery, we may like having the surgery done and behind us, but surgery itself is not most people’s idea of fun, and honestly, the recovery period afterwards can be a pain in every sense of the word.
Dr. Chris Bonney, an anesthesiologist, gives us the industry-secrets low-down, and is the voice of experience when it comes to the things to know about and/or prepare in advance—the little things that make a world of difference to your in-hospital experience and afterwards.
Think of it like “frequent flyer traveller tips” but for surgeries, whereupon knowing a given tip can mean the difference between deeply traumatic suffering and merely not being at your usual best. We think that’s worth it.
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This Is When Your Muscles Are Strongest
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Dr. Karyn Esser is a professor in the Department of Physiology and Aging at the University of Florida, where she’s also the co-director of the University of Florida Older Americans Independence Center, and she has insights to share on when it’s best to exercise:
It’s 4–5pm
Surprise, no clickbait or burying the lede!
This goes regardless of age or sex, but as we get older, it’s common for our circadian rhythm to weaken, which may result in a tendency to fluctuate a bit more.
However, since it’s healthy to keep one’s circadian rhythm as stable as reasonably possible, this is a good reason to try to keep our main exercise focused around that time of day, as it provides a sort of “anchor point” for the rest of our day to attach to, so that our body can know what time it is relative to that.
It’s also the most useful time of day to exercise, because most exercises give benefits proportional to progressive overloading, so training at our peak efficiency time will give the most efficient results. So much for those 5am runs!
On which note: while the title says “strongest” and the thumbnail has dumbbells, this does go for all different types of exercises that have been tested.
For more details on all of the above, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
The Circadian Rhythm: Far More Than Most People Know
Take care!
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