Category: Health

This category includes information about research on health.

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Health

Resting Pulse Rate of 45: Is it Normal?

Is a resting pulse rate of 45 alarming? I narrate my story to explain why it is not so.

I just woke up early in the morning in anticipation of my weekend run. While I take the effort to run at least two to three times in a week, the hectic responsibilities in the office would not make it possible. But there is an inner resolve that I will go back once again to such routine.

The quiet of 4 o’clock in the morning relaxes my mind and I feel the calm in my body. I feel good.

Earlier, I bought a wrist blood pressure monitor to replace the old one I had used for regular checking of my blood pressure wary of possible circulatory problems. But this was defective, meaning, it records higher than the conventional sphygmomanometer by 20mm Hg upon comparison. So I was forced to return it to the drugstore and had it replaced by the more reliable Automatic Blood Pressure Monitor HEM-7121 of Omron. Omron claims that this gadget provides accurate and comfortable upper arm blood pressure measurement with its so called enhanced IntelliSense Technology.

The saleslady admitted that indeed, many of those who bought the gadget heard the same complaint as mine. That local, cheaper brand blood pressure wrist monitor displays alarmingly higher blood pressure than what it should be.

Resting Pulse Rate of 45!

Looking at the display after taking the third measurement of my blood pressure as it settled in about 12 minutes, the blood pressure monitor showed 123/80 readings of my systolic and diastolic pressure. And my resting pulse rate is only 45! In my previous post in 2014, it was 44 beats per minute.

According to the National Institute of Health of the US, the normal resting pulse rate ranges from 60 to 100 beats per minute. Anything lower than that is a troubling condition called bradycardia or abnormally slow heart action – a symptom of heart disease.

geeks
Exercise for geeks (Source: xkcd)

But is this something that I should be concerned of? Not really, as I had been regularly running three miles without stopping for the past five years. I consider myself belonging to well trained athletes with resting pulse rate ranging from 40 to 60 beats per minute. Well conditioned athletes like Daniel Green registered a resting pulse rate of just 26 beats per minute.

Now I can hear the rains pouring outside. My exercise for the day may be averted, but I can still wait for an hour for it to subside. Alternatively, I can just run at the roofed bleachers of the sports complex to complete my regular three, sometimes four, miles in roughly 30 minutes.

For most healthy adults, the Department of Health and Human Services of the US recommends getting at least 150 minutes of moderate aerobic activity per week. That’s roughly 30 minutes everyday. But you can add more time of both intensive and moderate workouts to reduce weight. Benchmark your resting pulse rate to see your progress through time.

Happy running.

Categories
Environmental Issues Health Research

Electromagnetic Radiation Effect on Sleep

Does electromagnetic radiation emitted from modern digital devices affect sleep? This article explores and describes electromagnetic radiation effect on sleep based on scientific evidence. Read on to find out.

In an earlier post, I described the effect of blue light emitted from laptop or tv screens to sleeping patterns. But knowing this and taking action to prevent exposure to blue light apparently is not enough. I still had difficulty sleeping despite reducing my exposure to blue light. Blue light reduces melatonin levels thus disturb sleep.

I thought emissions from the WiFi adapter in my laptop might have something to do with my insomnia. So I hooked the laptop and the router together using a 10-meter RJ-45 cable run through the ceiling. I then switched off the built-in WiFi adapter on my laptop to a wired internet connection. Apparently, I slept soundly because of this change.

My experience could be considered an anecdotal evidence that the emission of electromagnetic radiation (EMR) can affect sleep. I thought my observation can lend support from the scientific literature. Hence, as is my usual routine, I browsed Google Scholar for relevant research on electromagnetic radiation effect on sleep.

Is there a relationship between EMR and sleep? What does research say about the electromagnetic radiation effect on sleeping patterns? Are they related at all?

Electromagnetic Radiation Effect on Sleep

The following five papers that describe the electromagnetic radiation effect on sleep can be convincing enough.

1. Chronic (or long-term) electromagnetic field exposure causes abnormal tissue death in the brain. It also causes lung damage, paralysis, muscle tremors, and bone pain (Worthington 2007).

2. Residents exposed to electromagnetic radiation from telecommunications towers suffer insomnia. In addition, they noted other non-specific health symptoms. These symptoms include headache, giddiness, loss of memory, diarrhea, mental slowness, reduced reaction time and mood swing (Suleiman 2014).

3. Radiation from cell phone base station affects the adrenal glands. The glands stimulate the production of adrenalin and cortisol. Excess adrenaline causes insomnia (Goldsworthy 2012).

4. Electromagnetic radiation from network routers can disturb sleep (Stein 2015).

5. Radiofrequency electromagnetic fields (RF EMF) before sleep alters brain activity thus affect sleep (Regel 2007).

These findings demonstrate dose-response relationship. This means that small doses of EMR may not cause health problems. But larger doses can produce health symptoms upon reaching a certain threshold level. The present youth are particularly vulnerable, as their life revolves around the use of these gadgets either for serious school work or at play.

electromagnetic radiation effect
electromagnetic radiation effect Radiation dose chart

Steps to Avoid Electromagnetic Radiation Exposure

One of the papers recommended that governments should impose new regulations on EMR-emitting communications infrastructure. Locating cell phone stations away from densely populated regions can reduce health risk. Chronic or long-term exposure to EMR-emitting gadgets such as cellphones, tablets, laptops, among others in the information age should be avoided.

To reduce electromagnetic radiation effects on your health, take the following steps:

1. Avoid using your electronic gadgets close to your body. Use an earphone when calling someone.

2. Connect to the internet using a cable as much as possible. If you can do so, switch off your WiFi adapter. The adapter emits more radiation the distance increases from the router. Weak router signals mean more electromagnetic radiation emitted by your gadget’s receiver.

3. Avoid going to places where people converge and use their cell phones such as malls and buses.

4. Do not sleep with your cell phone on and next to you.

5. Do not put your cellphone in your pocket. EMR has been known to cause infertility problems.

6. Avoid living near cellphone base stations. If living near one, block your house from incoming radiation with reflective aluminum insulation and painted walls.

7. Inform others about the health effects of electromagnetic radiation. Encourage them to take action so that emission of EMR in your workplace or community will be reduced.

The worry of the future generation is not about visible air pollution as environmental technology gradually keeps it at bay. Invisible radiation, due to our modern communications systems, is a threat that now shows its symptoms.

What you can’t see can harm you.

References

Goldsworthy, A. (2012). Cell phone radiation and harmful effects: Just how much more proof do you need?.

Regel, S. J., Tinguely, G., Schuderer, J., Adam, M., Kuster, N., Landolt, H. P., & Achermann, P. (2007). Pulsed radio‐frequency electromagnetic fields: dose‐dependent effects on sleep, the sleep EEG and cognitive performance. Journal of sleep research, 16(3), 253-258.

Stein, Y., Hänninen, O., Huttunen, P., Ahonen, M., & Ekman, R. (2015). Electromagnetic Radiation and Health: Human Indicators. In Environmental Indicators (pp. 1025-1046). Springer Netherlands.

Suleiman, A., Gee, T. T., Krishnapillai, A. D., Khalil, K. M., Hamid, M. W. A., & Mustapa, M. (2014). Electromagnetic radiation health effects in exposed and non-exposed residents in Penang. Journal of Geoscience and Environment Protection, 2(02), 77.

Worthington, A. (2007). The radiation poisoning of America. GlobalResearch. ca, October, 9.

Cite this article as: Regoniel, Patrick (May 14, 2016). Electromagnetic Radiation Effect on Sleep [Blog Post]. In SimplyEducate.Me. Retrieved from https://simplyeducate.me/2016/05/14/electromagnetic-radiation-effect-sleep/
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Health Research

The Computer Vision Syndrome Epidemic: Are You a Victim?

What is computer vision syndrome? What happens when someone is afflicted with this syndrome? Is there something you can do about it? This article provides answers to these questions.

Are you a regular computer user? Since you are reading this article, chances are, you are one of those who spend most of their waking lives in front of the computer. It seems everyone could not dispense of their laptops, desktop, tablets, or cell phones. They need to keep up with the latest news, do some work, communicate with friends, search for literature, and many other things possible with that shiny liquid crystal display (LCD) or Light Emitting Diode (LED) screen.

But do you know that by staring at your gadgets for a long time can make you sick? You are at risk of getting a sickness that gradually becomes common among computer users nowadays. Doctors call this modern malady computer vision syndrome or CVS. According to Wimalasundera (2006), millions of new cases occur each year.

I learned about this health condition while searching an explanation for the pain I experience at the back of my ear whenever I spend hours writing articles, searching the literature for my lessons, and answering the endless flow of emails to answer official queries, friends, and monitor the progress of research projects. Probably, I am spending more than eight hours a day to do all these things. Well, the pain stopped when I reduced the time I devoted in front of my laptop.

What is CVS and what are its symptoms? I gathered the following information after a search through online literature. This time, I used Google Scholar to pick up information from refereed journals recognized for their reliability.

Computer Vision Syndrome Defined

Blehm et al. (2005) and Yan et al. (2008) describe computer vision syndrome as a health condition characterized by a collection of symptoms including eyestrain, tired eyes, irritation, redness, blurred vision, double vision, and neck and back pain. Recently, Khalaj et al. (2015) added dizziness as a symptom. All of these symptoms relate to the eyes.

The primary symptoms of CVS appears to be dry eye, as computer users seldom blink as they stare onto computer screens. But other authors say the primary symptoms include eyestrain and monitor glare (Khalaj et al., 2015). There appears to be no consensus for this understudied area among the authors. Much more research needs to be done to clarify the issue.

Despite the dearth of literature on this subject, scientists believe that the symptoms of CVS arise because of poor lighting. Inadequate ambient light makes people squint in making out the characters on their computer screen while highly reflective screens diffuse too much light that tire the eyes. Also, eyes focused too close to the screen, faulty eyeglasses, bad seating posture, too many tasks to do using computers, reduced variation in eye movement, or a combination of these factors, are contributory factors.

How can you avoid CVS?

Based on the likely causes, the following practices are recommended to frequent computer users to prevent CVS:

1. Blink more. Consciously blink your eyes periodically while using the computer. Blinking is a natural way to protect your eyes from infection, thus prevent dry eyes. If you do have dry eyes, omega-3 fatty acids can help alleviate symptoms. Rashid et al. (2008) conclude that topical alpha-linolenic acid treatment led to a significant decrease in dry eye signs.

2. Sit on an ergonomic chair. It pays to invest a little in a computer chair that support the spine of the back. Add a bamboo pad or similar material to prevent your buttocks from heating up and cause other health problems if you spend too much time seating on a chair.

3. Replace your old pair of glasses. Change your eyeglasses if they have been with you for more than two years. Optometrists recommend changing glasses once a year. Faulty eyeglasses may be the source of your frequent headaches.

4. Rest. Nobody undermines the importance of rest in any activity. All work and no play make Johnny a dull boy. If you likewise use the computer at play, then you need to change the game you play into something that can wean you away from your computer. How about inviting your friends and go out to take some interesting pictures in a famous tourism site?

5. Have enough light. Adjust the lighting conditions in your work area so you can read fonts better on your computer screen.

6. Move your eyes. Gaze away from the computer screen once in a while to give your eyes time to rest and refocus. Optometrist Roger Phelps recommends the 20-20-20 rule. The number represents 20 minutes of computer use and looking at something about 20 feet away for 20 seconds. The older you are, the shorter should be the time devoted to computer use.

The point of the whole matter is that you avoid spending too much time in front of the computer or your electronic gadgets. Spend time mingling with friends, physically, to establish bonds no computer can ever replace. You gain not only your health but food for your emotions.

References

Blehm, C., Vishnu, S., Khattak, A., Mitra, S., & Yee, R. W. (2005). Computer vision syndrome: a review. Survey of Ophthalmology, 50(3), 253-262.

Khalaj, M., Ebrahimi, M., Shojai, P., Bagherzadeh, R., Sadeghi, T., & Ghalenoei, M. (2015). Computer Vision Syndrome in Eleven to Eighteen-Year-Old Students in Qazvin. Biotechnology and Health Sciences, 2(3).

Rashid, S., Jin, Y., Ecoiffier, T., Barabino, S., Schaumberg, D. A., & Dana, M. R. (2008). Topical omega-3 and omega-6 fatty acids for treatment of dry eye. Archives of Ophthalmology, 126(2), 219-225.

Wimalasundera, S. (2006). Computer vision syndrome. Galle Medical Journal, 11(1), 25-9.

Yan, Z., Hu, L., Chen, H., & Lu, F. (2008). Computer Vision Syndrome: A widely spreading but largely unknown epidemic among computer users. Computers in Human Behavior, 24(5), 2026-2042.

Cite this article as: Regoniel, Patrick (November 28, 2015). The Computer Vision Syndrome Epidemic: Are You a Victim? [Blog Post]. In SimplyEducate.Me. Retrieved from https://simplyeducate.me/2015/11/28/computer-vision-syndrome/
Categories
Environment Health

SCUBA Diving in Tubbataha Reef for the First Time

I ventured to SCUBA dive in Tubbataha Reefs (in 1993 declared a World Heritage Site) for the first time last April 12, 2015 after a hiatus of almost seven years because of a health condition. My last reef dive was in Middle Rock, a site where the waves meet and cause seasickness among our companions left in the boat in Port Barton, San Vicente on August 8, 2008.

The recent dive in Tubbataha is my 71st and 72nd SCUBA dive sessions. But during the 71st dive, I almost became another victim of a strong undercurrent. Here is my story and some lessons learned.

It was a Sunday, about 9 o’clock in the morning when we started out to Black Rock, a dive spot located northeast of South Atoll of Tubbataha Reef. I attempted to dive the day before but had trouble equalizing so I tried again that day. I had a sinus operation three years back due to a bad case of nose bleeding which could impact on my diving performance. This worries me, but I’d rather try than just guess if I’m fit to dive.

The original plan was for me to hold on to the anchor’s rope of a nearby motor yacht and gradually descend into the bottom while equalizing. While on the dive boat I contemplated the 100 or so meter swim to the rope. Shall I swim and hold on to the rope then gradually descend or descend right there and then in the clear waters?

coral wall diving
Diving next to a wall of corals is unlike diving in a reef flat.

I donned my SCUBA gear a bit anxious of my ears not equalizing underwater. My dive master companion assured me that a protected area ranger will watch me as I descend. That may be comforting but that did not relieve me of my worries.

I held the top portion of my mask and made sure air comes through easily in the second stage of the SCUBA diving regulator. The air flow seems okay. I also made sure that my snorkel is attached firmly to the mask. I tilted my body towards the water and fell backwards at the side of the dive boat, down into the water with a big splash because of the heavy tank.

Seeing my two dive master companions underwater gave me second thought on swimming towards the motor yacht to hang on. I decided to descend directly as time is of the essence.

I have done this before, why not now? I thought.

The beautiful coral reefs and marine life in Tubbataha are just irresistible. It is a rare chance to be in a World Heritage Site known worldwide as one of the best dive spots.

And so, after a few minutes, with occasional pain in my ears as I descend and ascend a little to ease the pain, I landed on the bottom of the sea at a depth of about 65 feet. It seemed my weights have been too heavy as I added two more 2 pound lead weights on my belt aside from the metal integrated in my buoyancy control device (BCD). My buddies came over to check on my gears and I made an OK sign with my thumb and index finger.

Sharks and Strong Undercurrent

We toured the area awhile before I signaled my male buddy (the other one’s a young lady dive master) to take a video of my instant refresher dive. I couldn’t understand his reaction as he motioned to his camera and signaled he is going to ascend. I learned later that he has to set his camera.

My lady buddy placed her two index fingers together, meaning, I will follow or accompany her. She has a GoPro camera around her wrist and I understood as she swam away.

I followed her as she swam towards the edge of the reef. She’s going deeper looking for interesting creatures to document. I followed suit until we encountered a group of sharks, probably white tips, swimming in the opposite direction.

reef shark
A white tip reef shark.

I was just a few meters away from her when suddenly, I felt a sudden tug of current pulling me away from her. I realized that a streaming current is lifting me up towards the surface. I can hear my dive computer emit rapid bursts of beeps indicating I was ascending too fast and I could hear my ear pop. I thought to myself that this could be the end of me. I may be in the news that day as a diver casualty.

Instinctively, knowing that the sudden ascent can cause Nitrogen bubbles in my body and cause decompression sickness or bends and probably unconsciousness, I kicked upwards while pushing the water up a few times in a desperate move to go deep again and prevent disaster. I also have to avoid jerky movements as I know sharks are nearby and I might catch their attention. I don’t want to be mistaken for a struggling fish.

I succeeded as I found myself back underwater so rapidly that my eardrum was so painful. My eardrum would have burst had I dove deeper. I tried to calm myself by breathing slowly to establish neutral buoyancy.

Reunited Divers and Snorkelers

After my successful attempt to swim back to the depths, I saw my lady buddy staring at me about fifty meters away. I was glad to see she was alright.

I motioned with my hand for her to come and join me as the strong current carries us to another spot. I held on to a projecting rock and held on to it until she came right next to me.

Upon closing in, my buddy gave me her camera as she spooled back the string that connects to a surface marker buoy (SMB) oriented parallel to the surface indicating the current is quite strong. She wrapped her arm around mine to prevent us from drifting apart as she gradually released the balloon towards the surface for the dive boat skipper to see. I was breathing so heavily I thought I’d finish off the air in the tank before we reach the surface.

I feel relieved being back to the dive boat after several minutes and seeing our worried team leader get a sigh of relief. I survived!

Our snorkeling companions had likewise troubling stories because of that sudden current sweep underwater. One snorkeler drank seawater and panicked. Luckily, everyone made it to the boat safely.

While on the boat, I halfheartedly resolved not to dive again. But upon my dive buddy’s invitation to dive in the afternoon that day, I could not resist but join the two master divers once again.

The second dive that day released me from my traumatic experience as I dove, also for the first time, along a wall of colorful, thriving corals and reef fishes without the swift current. My health worry is gone and I am able to SCUBA dive again.

Postscript

I learned later that my lady buddy thought I was just behind her while she takes a video of a group of white tip sharks, probably a dozen of them. She was rattled when she saw I was gone but was relieved upon my re-submergence at a distance.

Categories
Health Research

Do You Know that the Computer Can Disturb Your Sleeping Patterns?

For those who lack sleep due to computer overwork, here is an article for you. Take control of your sleeping patterns by getting rid of the blue light emanating from your computer. 

What does the blue light do to your brain and how does it affect your sleep? Listen to the video and appreciate how research findings can improve the quality of your sleep and affect your way of life in general.

Relationship between Hours of Computer Use and Sleep Time

I noticed that there seems to be a connection between the hours I spent sleeping and my use of the computer. As I stay logged in late in the night staring at the computer screen, the shorter my sleep time. I thought, “Is there a relationship between computer use especially at night and the number of hours I spent sleeping?

I’ve read somewhere that the computer does affect sleeping patterns. So, this could have been resolved simply by sleeping early thus avoiding the use of computer which may have been the culprit for my lack of sleep. But during times when I need to keep up with a heavy workload, I have to stay awake until late in the evening.

The Effect of Blue Light

Once again, I searched the internet for the specific effects of the computer to sleep. Then I came across a youtube video on how to sleep better. That video reminded me of the “blue light” emitted by the computer.

The video did not explain why blue light affects sleep but I remembered I read an article about it. According to research, blue light from the computer inhibits or reduces the production of melatonin, a sleep hormone. Thus, my lack of sleep may be due to reduced melatonin levels. I searched further in youtube about the blue light and what it does to melatonin. And I found a good explanation by Dr. Dani. I embed the helpful video below.

How to Counter the Effect of Blue Light

Knowing about blue light and upon hearing from another youtube video that it can be countered by wearing glasses with red filter or ultraviolet light protection, I resurrected my old sunglasses to experiment. I placed it on top of my progressive lens while typing in front of the computer late into the night.

At the first night I did it, I gained one hour of sleep and on the second day, I gained another hour. The latter gave me enough sleep, a full 7 hours, and greater energy to run early in the morning. I covered 7 kilometers that day in 39 minutes.

In summary, the lack of sleep that you may be experiencing may be attributed to the blue light emitted by the computer. Counter it by wearing glasses with red filter or sunglasses that serve the same purpose. If it doesn’t work then there may be other reasons.

For more tips on how to counter the effects of blue light, read the newsletter on blue light published online by Harvard Medical School.

©2014 December 12 Patrick Regoniel

Categories
Cases Education Health Healthy Alternatives Research

Aloe Vera Benefits: Amazing Cure to Chapped Lips

Do you have chapped lips? Have you tried different medications to no avail? This may be the solution to your problem. Read on and experience the curative benefits of Aloe vera.

At last, I discovered the best cure to my persistent chapped lips problem. It’s a simple fleshy plant called Aloe vera.

I once learned the curative properties of this plant a few years ago, and it just occurred to me to try it. That’s because I have already tried many remedies to my cracked, injured lips which usually happens when the ambient air is dry.

I tried applying to my lips different sorts of remedy. These include lip balm, petroleum jelly, glossy lipstick, olive oil, and even alum (locally called tawas) that made it even worse (of course).

I was so desperate that I thought I had a serious internal condition. But I didn’t have any bodily symptoms except my painful lips. And boy I’m glad I tried Aloe vera.

What is Aloe vera?

Aloe vera is a succulent plant species. Succulent means a tender, juicy, or fleshy plant. This means that if you hold the leaf of the plant, it is plump.

Once you remove the epidermis or outer leaf material of the plant, a gel in between the covering is revealed. I show a picture of the Aloe vera leaf with about an inch of the epidermis removed below.

How I Used Aloe Vera to Treat My Lips

The procedure I used in using Aloe vera to cure my lips is simple. I removed a leaf from the plant, sliced a little of the upper part of the leaf along its width then made another slice lengthwise, about an inch, to show the jelly-like substance inside it (see picture).

aloe vera benefits
How I cut the aloe vera leaf to access the gel.

I placed the gelatinous substance (open, dorsal side of the leaf) onto my lips and spread it all over my upper and lower lips. Subconsciously, I ate a little of the gel and tasted it just for curiosity and thinking it is edible.

It took me only about one to two days to see the results. My lips were healed in just a matter of three days, applying the gel only in the morning before going to work and at night before sleeping. It’s some miraculous cure.

The gel works best if the leaf is first cooled in the refrigerator. You will experience the cool, soothing relief of the gel after cutting through the leaf and applying the substance to your lips.

Healing Properties of Aloe vera

Before writing this article, I read a few lines about Aloe vera and discovered its many uses. Traditionally, people use Aloe vera as herbal medicine in many countries. It is a multi-purpose skin treatment. It is an effective moisturizer.

Even in the ancient times, the plant’s healing properties have been recognized. It even earned the name “a plant of immortality.”

Despite the health benefits of Aloe vera, however, there are apprehensions about its medicinal uses. It can be harmful if ingested in large doses. Topical applications seem to be okay.

There is, therefore, a need to study this plant further to confirm whatever possible complications that may arise from its use. There is a clear research gap along this area. For me, however, Aloe vera has shown its curative effects.

The underlying rule to apply if you worry about the harmful effects of medicinal plants is to use them in moderation. Once you have availed of its benefits, stop using it.

That’s just what I did. My lips got cured fast so there’s no need to use Aloe vera anymore. One thing I need to do to make sure I avoid having chapped lips is to drink more water. That will keep me internally hydrated and prevent drying up my lips again.

© 2014 October 18 P. A. Regoniel

Categories
Cases Health Quantitative Research Research

How to Slow Down Your Heart Rate Through Aerobics

Do you have a fast heart rate, i.e., more than 80 beats per minute? Chances are, you are either stressed or not getting enough exercise. Find out how aerobics can slow down your heart rate.

I have this nagging question in mind since I decided to undertake an aerobics program using Dr. Kenneth Cooper’s book on aerobics. This is about one’s heart rate getting slower when regularly exercising. Did my heart rate actually slow down because aerobics exercise has become an integral part of my weekly routine?

On page 101 of Dr. Cooper’s book aptly titled “aerobics,” he mentioned that the heart is such a magnificent engine that, when given less work, will work faster and less efficiently. When you make more demands on it through aerobics, it will become more efficient. That means that for a deconditioned man who does not exercise at all, his resting rate is about 80 or more while a conditioned man who exercises regularly, will have a resting heart rate of about 60 beats per minute or less. In 24 hours at rest, a deconditioned man’s heart will have to beat more than a conditioned man. He went on to explain things about the heart and how it becomes stronger and more efficient with training.

While browsing information along this topic, I found out that top athletes have heart rates of less than 30. Miguel Indurain, a top cyclist has a heart rate of 28.

Does Aerobics Slow Down Heart Rate?

I love to do a simple research to test this information although I am aware that there were already studies done to answer this question. I would like to answer the question using myself as the subject of the study and to see my progress. This is my case.

I will deliberately skip the review of literature and go directly to the objective of this experiment. My research question is:

Does aerobics slow down the heart rate through time?

My Method

I decided that I will use the graphical approach to find out if my heart rate indeed is slowing down through time. This is what researchers call a time series analysis. Will the heart rate trend be going down?

I recorded my heart rate each time I check my blood pressure upon waking up in the morning using an OMRON REM-1 wrist blood pressure monitor. So, I have added information that I will include in this article – my blood pressure.

I started recording the BP information and heart rate last August 8, 2013 up to this time. I do this routine before my 6 o’clock am run so it’s basically my resting heart rate after 6-8 hours of sleep. There were no significant changes in my lifestyle (i.e., no changes in diet, medication, workload, among other things) since I embarked on the aerobics program.

I plotted data gathered for eight months although I have done aerobics since January 2013. But then I failed to record heart rate or BP data until August 2013.

Results

I found out interesting information after plotting the data in Excel. This is easily done by plotting the date and corresponding BP values and heart rate in one row. I clicked on the Insert menu then hit the Line graph and selected the cells for date, diastolic, systolic, and heart rate values.

Indeed, my heart rate decreased through time as indicated by the heart rate trend line. However, I noticed that the trend for blood pressure goes towards the opposite direction. Both the systolic and diastolic pressure follow an upward trend (Figure 1).

graph of the heart rate and blood pressure
Fig. 1. Graph of my blood pressure and heart rate from August 19, 2013 to April 19, 2014.

What does this result suggest? This may mean that as the heart grows stronger (low heart beat), the pressure it exerts on the blood vessels also increases. On the other hand, this suggests that my blood vessels become less elastic through time.

This finding requires further reading – a review of literature focused on the relationship between the heart rate of a healthy person and his blood pressure. Is this trend the same for all people who engaged in aerobics and experienced the training effect?

Training effect is the body’s adaptation to a training program manifested by improvement in functional capacity and strength. In my case, this simply means that I am able to run a 6 kilometer stretch of road without stopping to rest. When I started the aerobics program last January 2013, I can barely finish a mile and my legs ached.

Well, whatever the increasing blood pressure means, what is important is that I found out that aerobics does decrease the heart rate through time. On March 4, 2014, I recorded my lowest heart rate ever: 44.  And I confirmed this by manually counting my pulse in one minute. And I also discovered that I can lower it at will by breathing deeply.

Where does this training bring me? An athlete friend invited me to join a 10K run last February 23, 2014. He noticed that I jog regularly and assured me that I will be able to finish the distance. I explained that I have been jogging just to address a health issue and is not that confident to test my performance. On second thought, I said why not?

I realized I can make the distance and gained confidence that I could be a marathoner. In fact, I’ve already joined and finished two 10-kilometer runs clocking 1:05 and 1:00, respectively. And I aim to finish the upcoming 10K run next month in less than an hour. This was made possible through serious self-training and with determination.

Do you have high blood pressure? Or easily feel tired after a few exertions? Try aerobics and take control of your health.

Just a note of caution: before engaging in strenuous exercise, have a medical check up to rule out any heart problem.

© 2014 April 19 P. A. Regoniel

Categories
Health Research

How Research Translates Into Health Guidelines

The US Government recommendations for better health arise from research findings. A systematic review of literature helps form guidelines on diet and exercise that the public can adopt for better health. Learn the recommendations.

I just finished a free online course titled Nutrition and Physical Activity for Health offered through Coursera.org by the University of Pittsburgh. It was a six-week course with two modules to finish each week.

Although I was a bit behind by a week, I tried to keep up with the reading assignments and quizzes to complete the 11-module course. An optional forum is provided to give feedback on the course or interact on posts written by fellow students or courserians who come from various parts of the world. I learned there were 70,000 of us who joined since the online course’s commencement on July 15, 2013.

What I really appreciate about this course is its science-based approach to health. For every recommended physical activity or diet, there is a corresponding research to back it up. A comprehensive review of research literature point out findings that support diet or physical exercise recommendations.

Here is a summary of what I have learned from the course.

Diet and exercise approach for better health

If you intend to manage your weight and reduce the risk of getting chronic, diet-related diseases like cardiovascular disease (CVD), cancer, stroke, and diabetes, then the best approach should be to implement both a diet and exercise program. Much will be gained from having a balanced diet and more could be achieved if this is coupled with regular exercise.

What is the recommended diet?

diet

To maximize the benefits of diet, it is important that you should be able to track down your energy or food intakes each day. You should list down how much and what kinds of food you ate. This requires counting the calories derived from food. This simple daily record will give you an insight on the kind and amount of food in terms of calories that will help you manage your diet.

All of the food consumed do not get burned for energy. The body will use up only a specific amount of calories to carry on the daily activities. The rest gets either excreted as waste or stored as fat. You should be concerned about overeating because if you take more than enough, the excess gives that added weight unless you do something to get rid of it. It is here that exercise plays a role.

There are a specific amount of calories needed for maintenance of body weight for the different food groups namely carbohydrates, proteins, and fats. The same goes for optimal quantities of vitamins and minerals to help absorb and regulate food in the body.

The whole point is that you should first understand your diet through consistent monitoring and from there design a diet that will give you just enough amount and kind of food required for weight maintenance. This means more of fibrous food and less of trans and saturated fats which are obtained easily from food.

What is the recommended amount of exercise?

The recommended amount of exercise to maintain weight is at least 150 minutes (2.5 hours) of moderate exercise per week. Ideally, this should be spread at a minimum of three times a week or better still, four to five times a week. This means at least 50 minutes of exercise if you opt for a three times a week exercise program or 30 minutes per session if you decide to exercise five times a week.

According to studies, more exercise is better. For best results, 250 minutes of moderate exercise per week is recommended. My exercise program is just okay as I do 41 to 44 minutes of vigorous exercise, that is, running a six kilometer distance three times a week. I just need to adjust my calorie intakes because my weight is between obese and normal based on a body mass index (BMI) of 25.9.

If you want to learn more about the health benefits of exercise, download the 2008 Physical Guidelines for Americans.

To measure the amount of calorie intake based on your food as well as your progress in your physical activity, use SuperTracker, a free online tool to track an individual’s diet and physical activity.

© 2013 September 2 P. A. Regoniel