Welcome to the HPRC Blog. We've got lots of information here, from quick tips to in-depth posts about detailed human performance optimization topics.
HPRC Fitness Arena: Total Force Fitness
The saying goes that “less is more,” but when it comes to exercise intensity, that might not be the case. We know that some exercise is better than no exercise, but is more-intense exercise better than moderate exercise? How hard should you push? And what are the benefits? With the growing popularity of high-intensity workouts, it’s important to consider both the risks and the benefits.
The role of intensity during exercise has been studied before. For example, the risk of death in older adults is lower for those who walk at a faster pace than for those who walk at a more leisurely pace. However, new research demonstrates that pushing yourself during a workout not only helps make you mentally tough but may also release chemicals into your body that help you develop bigger, stronger muscles.
During “stressful” or high-intensity exercise, your body kicks into “fight or flight” mode and releases hormones such as adrenaline and dopamine to push your system into high gear: increased heart rate, increased breathing rate, and increased oxygen to muscles. A recent study found that these hormones, when released during stressful exercise, sent messages to muscle cells to develop larger and more efficient muscles—at least in mice. The body only releases these chemicals when it feels stressed (for example, during intense exercise). If the body doesn’t feel stressed (as during light exercise), it doesn’t release these chemicals, so it can’t send signals to the muscles.
The good news is that exercise intensity is relative, so anyone should be able to exercise at a level that releases these hormones. Whether you’re just starting out or you’re a seasoned athlete, you can exercise to a level that is intense for you. Shooting for your target heart rate is a good start to gauging intensity. Not every workout needs to top out the intensity scale. In fact, doing too much too often can lead to overtraining and potential injury. Remember to listen to your body and incorporate rest or light days into your workout regimen.
PTSD was finally recognized as a medical condition when recent advances in neuroscience showed that the brain no longer works properly after trauma. Your brain has an alarm system to help ensure your survival; it’s useful as long as it works properly. When the alarm system malfunctions because traumatic events pushed it to its limits, the part of the brain responsible for thinking and memory can’t function properly. When this happens, a person with PTSD can’t compare what’s happening now with events in the past when they were safe. However, there are treatments to help “rewire” the brain, so it can work properly again. Learn more about this in “How is your brain’s circuitry affected by PTSD?”
Dietary supplements containing ephedra are illegal. What is ephedra and why is it illegal in the United States? Read HPRC’s new Operation Supplement Safety (OPSS) FAQ about ephedra to find out.
Also, be sure to check out our other OPSS FAQs, and if you still can’t find what you are looking for, use our “As the Expert” button located on the OPSS home page.
On the 4th of August 2014, the United States Coast Guard will be 224 years old. The Coast Guard actually began as the Revenue-Marine, later renamed the Revenue Cutter Service, under the Department of the Treasury. Its original mission was to control the seagoing smuggling that was rampant in the years following the founding of the United States. Needing money to fuel the fledgling country, the Treasury used the Revenue Cutter Service to patrol the shores and ensure that importers paid tariffs on their goods.
For its first eight years, following founding in 1790, this was the U.S.’s only maritime armed service because the Navy had been disbanded after the Revolutionary War. During the War of 1812, after the Navy had been re-formed, the Revenue-Marine was put into military service under command of the Navy. This set a precedent in which the Cutter Service alternated between peacetime missions under the Treasury to control shoreline smuggling and piracy and wartime military operations under the Navy.
The U.S. Life-Saving Service was also part of USCG’s ancestry. Founded in 1848, this agency grew out of a Massachusetts volunteer service, whose aim was to help shipwrecked mariners. The Service operated out of shore-based stations that spread southwards from New England after the Great Carolina Hurricane of 1854 brought recognition and federal funding. In 1878, the Life-Saving Service was formed as a federal agency under the Department of the Treasury.
In 1915, the Revenue Cutter Service and the Life-Saving Service merged to form the United States Coast Guard, which later absorbed other marine-related Treasury agencies. Its scope expanded to cover smuggling, maritime rescue, shipping regulation, and wartime naval combat support and coastal protection. In 2003, the Coast Guard’s protective position was brought to the fore when it was transferred to the Department of Homeland Security.
This August 4th, take a moment to thank the members of our U.S. Coast Guard for all they do!
No single mental technique can do the job for you, just as no single tool is the only one in a construction project. You can’t hammer a nail with a wrench! HPRC offers nine rules and strategies for your mind’s toolbox to help you perform your best. Check out HPRC’s Performance Strategies on “Mental skills for optimal performance” to learn more.
The Food and Drug Administration (FDA) is warning consumers about powdered pure caffeine, particularly as sold in bulk on the Internet. At least one death has been associated with the use of such products, and FDA advises consumers about the potency of powdered pure caffeine. See FDA’s Consumer Advice, which includes information about how to report an adverse event.
According to this consumer resource from FDA, you should limit your caffeine intake to just 100–200 mg per day (about 5–10 ounces of coffee). Taking large doses of caffeine—roughly 400–500 mg—at one time can result in a serious condition known as “caffeine intoxication.” Some symptoms of caffeine intoxication are minor and include nausea, vomiting, agitation, nervousness, or headache. Other symptoms can be more life-threatening, such as rapid heartbeat, electrolyte imbalance, very high blood sugar, or high levels of acid in the blood, which can cause seizures. See the OPSS FAQ to help you avoid hidden sources of caffeine.
The term “mental toughness” is often tossed about, but what is it really? And do you have it? Mental toughness is important to the success of Warfighters, athletes, business people, and others who have to overcome adversity to be successful.
Sport psychologists and others interested in optimal performance talk a lot about mental toughness, but it’s a bit complex, so it’s often misunderstood. Mental toughness is not just one trait; it’s a mixture of them.
Boiling it down, mental toughness is a strong belief in yourself and an unshakable faith that you control your own destiny. If you’re mentally tough, you can remain undaunted by adversity.
If you have these 4 Cs, you’re mentally tough:
1) Control: You feel in control of your emotions and influential with the people in your life.
2) Commitment: You embrace difficulty rather than running from it.
3) Challenge: You believe that life is full of opportunities, not threats.
4) Confidence: You know you have what it takes to be successful.
Mental toughness is a psychological edge that some are born with and others develop. It allows you to consistently cope with training and lifestyle demands better than those who don’t have it.
You can develop mental toughness through a long-term process of developing mental skills. Leaders can promote mental toughness by creating a learning environment centered on the mastery of those skills (listed above) and by being generally supportive, encouraging Warfighters to maintain positive relationships. Over the long haul, to maintain your mental toughness, you need to continue honing mental skills, and you need a self-driven, insatiable desire to succeed.
Omega-3 fatty acids make up a family of polyunsaturated fatty acids. They are important to our health, and since our bodies can’t make them, we need to obtain them from the foods we eat. Omega-3 fatty acids may reduce the risk of heart disease and play an important role in our cell membranes. So, eating more can benefit the body in many ways.
The most widely available dietary source of EPA and DHA is cold-water oily fish such as salmon, herring, mackerel, anchovies, and sardines. Other oily fish such as tuna also contains omega-3 fatty acids but in lesser amounts. Some other sources of ALA are walnuts and canola, soybean, flaxseed/linseed, and olive oils. For additional information, including health benefits of omega-3 fatty acids, read this fact sheet; and for omega-3 content in various foods, try this infosheet from HPRC.
West Nile. Dengue. Malaria. Chikungunya. No, that’s not a typo. Chikungunya (pronounced “chik-en-gun-ye”), a mosquito-borne virus that primarily occurs in Africa, Asia, and the Indian subcontinent, and Warfighters deployed to these regions have been exposed to this risk for some time, now, however, it is reportedly spreading to Europe and the Americas. Most of the cases in the U.S. involve individuals who have recently traveled abroad, but the Centers for Disease Control and Prevention (CDC) just reported the first locally acquired case, in Florida.
The viral illness is characterized by fever and severe joint pain, but other symptoms include headache, muscle pain, joint swelling, and rash. There is currently no antiviral drug for Chikungunya, and treatment is aimed at relieving symptoms. Most patients will recover fully on their own, although sometimes symptoms persist for several months.
It’s important to know your environment. If you’re being deployed to these regions or even going there on vacation, there are things you can do to protect yourself from mosquito bites and mosquito-borne infections. Wearing long pants, shirts with long sleeves, and insect repellent while outdoors reduces the chance of an insect bite. Other precautions include removing standing water from containers such as flowerpots and buckets and placing screens over open windows and doors.
If you think you could have been infected, you should see your doctor, especially if you have recently traveled to high-risk regions. Visit the Center for Disease Control (CDC) for more information about Chikungunya.
If you’re looking for the latest information on how to improve your sleep, activity, and nutrition, you can find it with the new app for the Performance Triad, an initiative of the U.S. Army Surgeon General. The Performance Triad, which includes technological tools and resources, was rolled out to optimize performance for individuals and units—and ultimately to maximize readiness and resilience. The app is available for free and is available in versions for iPhone, Android, and Windows. Whether you’re a healthcare professional, active duty, spouse, or civilian, you’ll be able to find useful information tailored to you! The app provides tips on how to sleep well, stay active, and eat right. Whether you’re on the go or looking for quick answers, you’ll have lots of great information at your fingertips. This app will be updated frequently, so be sure to keep your eye on it for new information!