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Exercise-based cardiac rehab programs have proven to reduce mortality in ischemic heart disease patients by 30 percent, but buy-in to excersise regiments has been historically low, according to the study's authors. They also noted that there has been a robust discussion around wearables’ ability to remotely monitor health behaviors, but little evidence that the devices lead to an improved behavior over a long period of time. However, past studies have showed that money does motivate behaviors.

Virtual coaches, fitness trackers help patients stay fit after cardiac rehab: Small pilot study suggests virtual oversight keeps patients motivated to exercise -- ScienceDaily

The 12-week mobile health, or mHealth, program not only kept cardiac rehab patients from losing ground, it appeared to help them maintain and even gain fitness. The researchers have published their findings in the American Heart Journal and are now looking to scale up the study with a larger group of patients. "The benefits of a cardiac rehab program are well-established, but the gains tend to be temporary," said senior author William Kraus, M.D., who led the project as part of the Duke Molecular Physiology Institute. "Good habits are hard to maintain for a lot of people once they are on their own and no longer have someone overseeing their progress."

This is your brain on exercise: Vigorous exercise boosts critical neurotransmitters, may help restore mental health -- ScienceDaily

The researchers measured GABA and glutamate levels in two different parts of the brain immediately before and after three vigorous exercise sessions lasting between eight and 20 minutes, and made similar measurements for a control group that did not exercise. Glutamate or GABA levels increased in the participants who exercised, but not among the non-exercisers. Significant increases were found in the visual cortex, which processes visual information, and the anterior cingulate cortex, which helps regulate heart rate, some cognitive functions and emotion. While these gains trailed off over time, there was some evidence of longer-lasting effects. "There was a correlation between the resting levels of glutamate in the brain and how much people exercised during the preceding week," Maddock said. "It's preliminary information, but it's very encouraging." These findings point to the possibility that exercise could be used as an alternative therapy for depression. This could be especially important for patients under age 25, who sometimes have more side effects from selective serotonin reuptake inhibitors (SSRIs), anti-depressant medications that adjust neurotransmitter levels.

A heartbeat-like vibration can reduce the anxiety associated with public speaking

“Rather than worrying about measuring physiological variables, such as heart rate, steps taken and burnt calories through the use of wearables, we can think of new ways to exploit this technology by making it more embodied, more embedded and more affective,” Tsakiris said. “We can use fundamental biological signals to change the way we think and feel.”

Strength is Money in the Bank | Mark Rippetoe

All the “cardio” in the world will do nothing to maintain your muscle mass, while effective strength training both grows muscle mass and keeps your heart and lungs in shape. If you have enough sense to know you must devote some time to exercise, strength training is the far more logical way to spend that time.

CBT plus video games plus heart rate monitors

In a subsequent outpatient study the researchers randomized 20 youth to 10 cognitive behavior therapy sessions and videogame therapy that required them to control their heart rate, and 20 youth to CBT with the same videogame but not linked to heart rates. All the adolescents had anger or aggression problems, said Dr. Gonzalez-Heydrich, who was senior author of the study. Therapists interviewed the children’s primary caregiver before and two weeks after their last therapy session. They found the children’s ratings on aggression and opposition were reduced much more in the group that played the game with the built-in biofeedback. The ratings for anger went down about the same in both groups. The findings were presented at the American Academy of Child and Adolescent Psychiatry conference in 2015. The study is currently under review for publication.

Wearing a 'heart' on your sleeve can reduce stress -- ScienceDaily

To test the efficacy of doppel, the researchers exposed volunteers to a socially stressful situation and measured their physiological arousal and their reported anxiety levels. In a controlled, single-blind study, two groups of participants were asked to prepare a public speech -- a widely used psychological task that consistently increases stress. All participants wore the device on their wrist and a cover story was used to suggest to participants that the device was measuring blood pressure during the anticipation of the task. Importantly, for only one of the two groups of participants, the device was turned on and delivered a heartbeat-like vibration at a slower frequency than the participants' resting heart rate, while they were preparing their speech. The researchers measured both physiological arousal and subjective reports of anxiety. The use of doppel had a tangible and measurable calming effect across both physiological and psychological levels. Only the participants who felt the heartbeat-like vibration displayed lower increases in skin conductance responses and lower anxiety levels. "Wearable devices are becoming ubiquitous in everyday life, but across the board their primary aim is to quantify our activity. The results we got suggest that, rather than measuring ourselves, we can instead harvest our natural responses to heartbeat like rhythms in ways that can assist people in their everyday life." said Professor Tsakiris.

How walking benefits the brain: Researchers show that foot's impact helps control, increase the amount of blood sent to the brain -- ScienceDaily

"New data now strongly suggest that brain blood flow is very dynamic and depends directly on cyclic aortic pressures that interact with retrograde pressure pulses from foot impacts," the researchers wrote. "There is a continuum of hemodynamic effects on human brain blood flow within pedaling, walking and running. Speculatively, these activities may optimize brain perfusion, function, and overall sense of wellbeing during exercise." "What is surprising is that it took so long for us to finally measure these obvious hydraulic effects on cerebral blood flow," first author Ernest Greene explained. "There is an optimizing rhythm between brain blood flow and ambulating. Stride rates and their foot impacts are within the range of our normal heart rates (about 120/minute) when we are briskly moving along."

Long term heart rate elevation from past stimulant use

The effect on heart rate was in large part driven by current use of medication, although at one time point (8 years) there was a significant effect of cumulative exposure regardless of current use.

Higher heart rate

Using random effects meta-analysis, we found that subjects randomized to CNS stimulant treatment demonstrated a statistically significant increased resting heart rate [+5.7 bpm (3.6, 7.8), p<0.001] and systolic blood pressure findings [+2.0 mmHg (0.8, 3.2), p=0.005] compared with subjects randomized to placebo.

Heart docs paid to operate

the starting income for cardiologists who perform invasive procedures is twice that of cardiologists who mainly provide preventive, longitudinal care.

Wearable biosensors can flag illness, Lyme disease, risk for diabetes; low airplane oxygen -- ScienceDaily

Snyder's team took advantage of the portability and ease of using wearable devices to collect a myriad of measurements from participants for up to two years to detect deviations from their normal baseline for measurements such as heart rate and skin temperature. Because the devices continuously follow these measures, they potentially provide rapid means to detect the onset of diseases that change your physiology. Many of these deviations coincided with times when people became ill. Heart rate and skin temperature tends to rise when people become ill, said Snyder. His team wrote a software program for data from a smart watch called 'Change of Heart' to detect these deviations and sense when people are becoming sick. The devices were able to detect common colds and in one case helped detect Lyme disease -- in Snyder, who participated in the study.

Your brain suppresses perception of heartbeat, for your own good

It did not take long for Roy to get over his initial surprise at his discovery. “You don’t want your internal sensations to interfere with your external ones. It’s in your interest to be aware of what’s outside you. Since our heart was already beating while our brain was still forming, we’ve been exposed to it since the very start of our existence. So it’s not surprising that the brain acts to suppress it and make it less apparent.” Is feeling one’s heartbeat realted to anxiety? Awareness of one’s heartbeat is known to be correlated with a number of psychological problems, including anxiety disorders. Patients typically perceive their heart rate more clearly than most people. “But someone who does not suffer from this type of disorder can also be aware of their heartbeat,” said Roy. “This can happen at times of intense excitement or fear, for example.”