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.
Reports estimate that one of every four deaths is attributed to heart disease. Cardiorespiratory (aerobic) activities such as jogging, cycling, and swimming directly improve the function of the heart, which decreases the risk of coronary artery disease, high cholesterol, high blood pressure, stroke, and type II diabetes. Aerobic fitness is important enough that all active-duty service members must complete an aerobic fitness assessment, such as a maximal effort timed run, as part of their annual physical fitness test.
To delve a little deeper about the changes your heart, lungs, and blood vessels undergo when you improve your aerobic fitness, read on. One important change that occurs is that your heart’s “stroke volume”—the amount of blood the heart pumps out with each beat—increases. This comes from an increase in your heart’s strength and ability to hold a greater amount of blood. This in turn reduces your heart rate (HR) both at rest and at all levels of exercise. In fact, with consistent training, your resting HR could likely decrease as much as eight to10 beats per minute. That’s about 5 million fewer heartbeats in a year! Simply put, aerobic training means your heart has to do less work to get your job done.
Changes also occur to your blood and blood vessels with aerobic fitness. Your blood vessels increase in diameter and are better able to expand and constrict. This allows blood to move through your blood vessels with less resistance, reducing your blood pressure. And what happens to your blood? The levels of plasma (the liquid portion of the blood), red blood cells, and hemoglobin all increase, which means that your blood can carry more oxygen.
Altogether, the physiological changes mentioned here should make it easy to see why aerobic exercise is so important. If you want to learn more about how to get started improving your cardiorespiratory health through exercise, visit these Performance Strategies from HPRC.
If you’re in the military, your smartphone may have just gotten smarter. Researchers have recently developed hardware and software that enables teams with Android smartphones to locate nearby snipers. Acoustic sensors have been developed and used by the military in the past, but this portable attachment hooks up to a smartphone and uses microphone sensors to triangulate a sniper’s location through muzzle blasts and shockwaves. Other sniper sensors have been developed, such as the helmet-mounted sensor back in 2007 that is the predecessor to this smartphone system. According to one source, the Army has plans to send soldiers to Afghanistan with smartphone technology that will allow them to communicate—even text—more effectively out in the field. As smartphones find their way into combat, this kind of technology shows great promise for the near future.
Operation Live Well is a new wellness campaign by the Department of Defense that aims to make healthy living the easy choice and the norm for service members, retirees, DoD civilians, and their families. They point out resources for how to eat better, stay physically active, quit or avoid tobacco, and stay mentally fit. The educational, outreach, and behavior-change initiatives provide tools and resources to help you learn about healthy lifestyles. You’ll also be able to develop your own personalized health plan via the Operation Live Well website soon.
A second part of Operation Live Well is their Healthy Base Initiative (HBI), which aims to help the defense community reach or maintain a healthy weight and avoid tobacco use. Scheduled for launch during the summer of 2013 at 13 military installations and DoD sites worldwide, HBI will offer a range of installation-tailored, health-related programs that will be measured for their effectiveness. The programs that are most successful will eventually be expanded to other installations.
For more information on Operation Live Well, visit militaryonesource.mil/olw.
June is National Fresh Fruits and Vegetables Month. And it’s no wonder—during the warm summer months many fresh fruits and vegetables are at their peak. So take advantage of nature’s bounty and make an effort to include more fruits and vegetables into your family’s diet. Here are some tips to help:
- Start early: Top your morning breakfast cereal with fresh berries, bananas, or peaches for added flavor and nutrition.
- Add some crisp lettuce leaves and juicy tomato slices to a sandwich or wrap.
- Kids love foods they can “dip,” so encourage them to dip their veggies in a delicious, healthy fresh tomato salsa.
- Keep fresh veggies and fruits on a platter in the refrigerator so kids (and you!) can grab some any time—cooling off by the pool, reading a book, or cooking dinner.
- Go to a farmers’ market to find the freshest, in-season produce.
- Plant your own garden—or just a small tomato plant on the back porch. There’s nothing quite like homegrown fruits and vegetables.
- Have some dessert! Fruits are full of natural sweetness—the perfect way to round out a meal.
Eating fruits and vegetables may reduce your risk of cancer, diabetes, and many other diseases. To find out how many fruits and vegetables you and your family should be eating, use this great calculator from the Centers for Disease Control and Prevention. The U.S. Department of Agriculture has more information about the benefits of eating fruits and vegetables as well as lots of great tips to help you incorporate fruits and vegetables into your diet.
Are you a professional who would like to know more about the evidence behind a program that you are thinking about using with military families? Or are you a military family member currently participating in a program you want to find out more about? Check out Pennsylvania State University’s Clearinghouse for Military Family Readiness. HPRC’s Answer describes this program and the services it provides.
If you’ve injured a muscle or tendon during your PT training and wondered if that elastic tape that comes in bright colors could help you, read on. Elastic therapeutic tape is significantly different from regular elastic bandages, and it became popular during the 2008 Beijing Olympics when athletes such as professional beach volleyball player Kerri Walsh used it. Both are used to treat athletic injuries such as strains and sprains, but they produce their benefits in different ways. Elastic therapeutic tape is made of a thin material with thickness and elasticity similar to that of human skin. When taped on skin it supports injured muscles. However, it has also been reported that it helps relieve pain by lifting the skin away from the tissue beneath and enhancing blood and lymph flow to the injured area. Regular elastic bandages such as ACE bandages also provide support and reduce pain when wrapped around an injury, but unlike elastic therapeutic tape, they provide localized pressure to reduce swelling. In addition, they don’t stick to skin and usually restrict range of motion. Users report that elastic therapeutic tape works, but scientific evidence is contradictory. There just isn’t enough evidence to support the use of elastic therapeutic taping over other types of tape/bandage, and there is no scientific explanation for why it should work. So just be aware and use this tape at your discretion.
Test dummies are commonly used in the military for training and first aid exercises. Recently, the Pentagon has been working on finding a “human surrogate” for use in testing an array of non-lethal weapons. Modern technology equips these dummies with human-like internal and external organs as well as sensors capable of gathering information about how a person might react to such weapons. Current weapons that use stimuli such as heat, pain, and noise would be tested on these dummies rather than on live human subjects, with the goal of eliminating permanent damage while optimizing effectiveness. Other information collected would help scientists continue to build better models. Non-lethal weapons are often used for crowd-control purposes, so this technology would also benefit law enforcement, which commonly uses such systems.
Cheeba Chews are marketed as chocolate taffy, but they actually contain an illegal substance. Read the Operation Supplement Safety (OPSS) FAQ to find out more about these products and whether they are legal for members of the military community to consume. Be sure to check back often as we add answers to other questions and topics in the OPSS section of HPRC’s website.
Individuals involved in disasters and terrorist attacks often experience psychological trauma that needs both immediate and ongoing attention. In addition to getting medical first-aid to individuals, responders can also help administer psychological first aid (PFA). A few features from the VA’s Psychological First Aid: Field Operations Guide are:
- Ensure safety first. Physical needs (medical attention, food, and shelter) take priority. Before you begin PFA, assess whether these other needs have been taken care of. Remember to communicate clearly and be compassionate and polite as you come into contact with survivors.
- Stay calm and spread calm. Be patient and pay attention to survivors, who are often in emotional distress, as they convey their story. If they express confusion, reassure them that their behavior is a natural response to the circumstances and offer healthy ways to cope with it. And make sure that your own emotional and physical reactions are not making the situation worse.
- Connect with others. Help survivors connect with friends, family members, and other people who can support them. Relationships are invaluable to survivors during traumatic events.
- Encourage hope. Help calm fears or worries about the future by reminding survivors that help is on the way and will continue to be available in the future as they recover.
For more information, see the “dos” and “don’ts” in this fact sheet from the Center for the Study of Traumatic Stress. Also, download the free PFA mobile app, which supplements the PFA Field Operations Guide to help you administer psychological first aid in the field. Online training and videos are also available; see links on the web page linked above. For more information on healthy ways to cope, check out HPRC’s Mind Tactics domain.
Good oral health means more than just brushing your teeth. Flossing and brushing your teeth at the gumline, contact areas, tongue, and any trouble areas your dentist or hygienist has pointed out—plus brushing after sugary snacks or beverages—are all important to good oral health. According to the Army Public Health Command, poor oral health can negatively impact training, mobilization, and operations. Visit the American Dental Association’s (ADA) Mouth Healthy website for more oral health information, tips, and news for adults and children.