Keep your heart rate variability under control

Keep your heart rate variability under control with the SelfLoops HRV app. The SelfLoops HRV app measures the heart rate variability using Bluetooth Smart or ANT+ heart rate monitors in Android and iOS.

Heart rate variability (HRV) is the physiological phenomenon of variation in the time interval between heartbeats. It is measured by the variation in the beat-to-beat (called R-R) intervals. It is a metric that is used to analyze and evaluate stress and overtraining.

The application can upload the HRV measurements in the SelfLoops website. You’ll have all your sport activities and hrv values stored and organized, to be able to keep track how exercises influence your heart rate variability.

In a graph view, in a calendar view and in a tablet view.

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Flow

Psychologist Mihaly Csikszentmihalyi’s famous investigation of “optimal experience” have revealed that what makes an experience genuinely satisfying is a state of consciousness called flow.

During flow, people typically experience deep enjoyment, creativity, and a total involvement with life.

A small excerpt from his book Flow, the psychology of optimal experience:

As our studies have suggested, the phenomenology of enjoyment
has eight major components. When people reflect on how it feels when
their experience is most positive, they mention at least one, and often
all of the following.

First, the experience usually occurs when we confront tasks we have a chance of completing.

Second, we must be able to concentrate on what we are doing.

Third and fourth, the concentration is usually possible because the task undertaken has clear goals and provides immediate feedback.

Fifth, one acts with a deep but effortless involvement that removes from awareness the worries and frustrations of everyday life.

Sixth, enjoyable experiences allow people to exercise a sense of control over their actions.

Seventh, concern for the self disappear, yet paradoxically the sense of self emerges stronger after the flow experience is over.

Finally, the sense of the duration of time is altered; hours pass by minutes, and minutes can stretch out to seem like hours.

The combination of all these elements causes a sense of deep enjoyment that is so rewarding people feel that expending a great deal of energy is worthwhile simply to be able to feel it.

Rating of Perceived Exertion (RPE)

The Rating of Perceived Exertion (RPE) is now available on SelfLoops.

The Rating of Perceived Exertion is a very common rating scale used in the scientific literature. It is a simple scale of asking someone how hard or difficult was the exercise or session. It is a good measurement of exercise intensity.

Perceived exertion is how hard you feel like your body is working. It is based on the physical sensations a person experiences during physical activity, including increased heart rate, increased respiration or breathing rate, increased sweating, and muscle fatigue. Although this is a subjective measure, a person’s exertion rating may provide a fairly good estimate of the actual heart rate during physical activity (Borg, 1982).

Since the 1980s thousands of studies have used this scale to evaluate how difficult the exercise session, training or competition was. Over multiple decades it has held up to scrutiny and is one of the best measures available. Even with all the great technology that is available today, the RPE scale is still the one of the most reliable and accurate ways to measure how intense an athlete feels a workout has been, source.

A few research articles:

Psychophysical bases of perceived exertion. Borg, Med Sci Sports Exerc.1982 PDF

A six-year monitoring case study of a top-10 cycling Grand Tour finisher,Julien Pinot, Frederic Grappe, Journal of Sports Sciences. Link

Validity and reliability of the session RPE method for monitoring exercise training intensity, L. Herman, C. Foster , M A Maher,R P Mikat , J P Porcari, SAJSM vol 18 No. 1 2006 Link

A New Approach to Monitoring Exercise Training, Carl Foster, Jessica A. Florhaug, Jodi Franklin, Lori Gottschall,, Lauri A. Hrovatin, Suzanne Parker, Pamela Doleshal, Christopher Dodge PDF

To use it in SelfLoops, you need to answer the question on how hard was your activity in a 0-10 scale in a list located next to your activities’ list. See below:

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The outcome is your Session RPE that is the evolution of your training load, or better the Perceived Exertion.

In our analysis are included the following metrics.

Training Load: It is your RPE  x minutes in the session.

Weekly Training Load: It is your weekly training load calculated as the sum of your week training loads.

Monotony:It is calculated using the weekly Training Load divided by its standard deviation. It measures how similar your training load was during the week. A high monotony increases your strain value.

Strain: It is calculated as Training Load x Monotony. A high value of the strain may highlight overtraining.

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Sports Nutrition

Food is the fuel for our body. A proper nutrition is very important for anyone of us for a healthy life. If you practice sport you need a balanced diet and carefully eat what it is more appropriate during the season, the day, pre training, post training, pre race, after the race and so on. To achieve results it is not enough to train hard.

A nutrition plan must go together with a training plan. A nutritionist can give you the right recommendations and follow you during the season, together with the coach.

A software platform like MyFitnessPal or FatSecret can help you keep track of your calories intake and give you the information on the nutrition value of the food you eat.

These are a few books we found interesting for an intro on nutrition and sports.