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.
On a daily basis, girls’ physical activity levels are lower than boys’ of the same age. They need extra support from their parents to get moving and find opportunities for physical fitness. A lack of physical activity can have negative consequences in the long term, such as poorer hand-eye coordination and worse overall health. But exercise isn’t just good for your child’s body; it’s also linked to better academic achievement.
One reason girls get less exercise is because they may not be offered opportunities to engage in physical fitness. Parents might assume their daughters don’t like sports and then don’t suggest they participate. Encouragement from parents matters. Don’t assume your daughter isn’t interested in physical fitness, even if she sometimes says she isn’t! Break up the times your daughter is just sitting around by getting her to go for a walk or move around the house. Ask her to help with tasks at home that require some physical activity. Encourage your daughter to enroll and stay involved in organized sports from a young age. Brainstorm physical activities she might enjoy. There’s trampoline, fencing, hip-hop dance, lacrosse, martial arts, soccer, ice hockey, skateboarding, rowing, swimming, yoga, or tennis, to name a few.
Remember that kids take their cues from their parents. Set an example by being physically active yourself, and your children will likely follow suit. All kids—boys and girls—need at least 60 minutes if physical activity a day. Not sure what type of exercises your children should be doing? Check out HPRC’s “Put some fun in your children’s fitness” for some great ideas.
How do you know how much weight to lift when you start a resistance-training program? Most programs are designed around lifting a percentage of your maximum strength.
First, you need to find out what your maximum strength is. A popular method is the one-repetition maximum test (1RM): the most weight you can press once but not twice. You can also do multiple-repetition tests for a reliable estimate of maximum strength. A 5-repetition test seems to be accurate, but more than 10 reps is unreliable.
This instructional video demonstrates the American College of Sports Medicine’s (ACSM) protocol for a 1RM test. ACSM’s protocol can also be applied to a multiple-repetition test. For example, determine the most weight you can lift 5 times, but not 6 times, for a 5-rep max test. If you have doubts about whether this is the right test for you, be sure to consult a healthcare professional.
The second step is to determine what amount of weight—as a percentage of your 1RM—you should use to improve your muscular strength and endurance. Typically, your muscular strength should improve if you use 60–80% of your 1RM. You should be able to improve your muscular endurance using about 50% of your 1RM. Once you’ve assessed your maximum strength, use this conversion chart from the National Academy of Sports Medicine (NASM) to determine your 1RM percentages.
Knowing what to order in a restaurant or dining hall can be challenging when you’re trying to eat healthy on a budget. But there are ways to eat right and save money too.
- Check out the prices! Higher-priced entrées usually appear in the top right of a restaurant menu or menu board because that’s where your eyes tend to look first. You might want to think twice before placing your order.
- Look for deals. Higher-priced entrées are sometimes mixed with other offerings where you might overlook their prices. So make sure to check out what else is on the menu and compare prices. You might feel good about selecting something lower in price, even if it’s more than you’d usually spend. Choose wisely.
- Avoid the urge to splurge. Menus with red typeface and mouthwatering descriptions increase your appetite. Heading out for a fun night with friends? You could be tempted to spend more or order more food, which can leave you seeing red too. Sticking to your budget saves calories and dollars. Examine the menu carefully for tasty, healthy options.
- Ordering in the dining hall or galley? Learn more about fueling up with the right foods to optimize your performance using the Department of Defense’s (DoD) Go for Green® nutrition program.
Armed with this new intel, you can look forward to your next meal out without buyer’s remorse!
SARMs (selective androgen receptor modulators) are unapproved, experimental drugs sometimes illegally marketed and sold as dietary supplement products. They’re also available on the Internet in other forms, but their use in sport is prohibited. Use of SARMs can affect military performance and readiness.
Operation Supplement Safety (OPSS) has an FAQ about SARMS, including a link to a list of more than 200 dietary supplements and other commercial products containing SARMs. The list also includes an extensive list of SARM names to help you identify them on product labels.
HPRC’s Ask the Expert feature is available if you have particular questions about these ingredients or any other questions about dietary supplements.
Thursday, April 7th, is National Alcohol Screening Day. If you drink any amount of alcohol, it’s a good idea to check in with yourself and assess your drinking habits. You can complete a free online screening assessment from Screening for Mental Health or from AfterDeployment, a Defense Center of Excellence. It takes only a few minutes and can help you determine if you’re on a slippery slope towards an alcohol problem.
If you find yourself engaging in heavy drinking or feeling dependent on alcohol, don’t be afraid to reach out for help. DoD is there for you, and each service has its own program dedicated to helping you get better. You can find links under HPRC’s Service-Specific Substance-Abuse Programs.
This spring, create a “family tree of health” by collecting your family medical history. The information you gather might help you to take steps to manage health conditions that run in your family.
Record the health information of at least 3 generations in your family, including children, siblings, parents, grandparents, and aunts and uncles and their children. Collecting your family medical history is a way to find clues about any medical conditions that might run in your family. Share the information with your doctor to help her/him see patterns that could affect you. If your family members have medical issues such as heart disease, high blood pressure, certain cancers, and diabetes, you might be at increased risk for these conditions. Then your doctor can recommend lifestyle changes and/or treatments to reduce the chances a medical condition will become a problem.
So, get asking! And write down the answers. Ask your family members about their chronic conditions. Ask if they’ve had any serious illnesses such as cancer or stroke and when they developed. Also ask about problems with pregnancy or childbirth. If you’re missing some important information, consider searching for obituaries or death certificates of relatives who are no longer with you.
My Family Health Portrait is an online tool where you can enter your family’s health history, print it to share with family members and healthcare providers, and save the information so you can update it over time. Collecting your family medical history will not only benefit your own health, but also the health of generations of your family to come!
An important thing to know about stress fractures is how to avoid them. A stress fracture is a tiny crack in a bone that happens when your muscles can’t absorb shock and transfer stresses to the bone. Most occur in the lower extremities, especially the lower leg and foot.
A stress fracture is usually an overuse injury that develops over a long period of time—from weeks to months. They’re especially common among military recruits, in about 3% of men and 9% of women. And since it can take several weeks to months for a stress fracture to heal, the best approach is to avoid getting one. Here are some tips for prevention:
- Use the progression principle of training: Gradually increase your training intensity, usually by no more than 10% weekly if you exercise 3 or more days a week. Slowly incorporate higher-stress activities such as jumping and interval training into your workout. Set incremental goals to help you develop your training routine step-by-step.
- Check your footwear and make sure it matches your training routine. Replace old or worn footwear.
- Check your form. Are you moving properly when you exercise or does your form put you at risk of injury?
- Pay attention to early signs of injury. Unusual muscle soreness and other aches and pains can be a sign of injury and/or imbalances that could worsen if they aren’t addressed early.
- Monitor your diet, specifically calcium and vitamin D intake. To learn more, read the National Institute of Health’s Dietary Supplement Fact Sheet on calcium and HPRC’s article on vitamin D.
It’s important to recognize a stress fracture and get medical help early, as described by the American Academy of Orthopaedic Surgeons. The Mayo Clinic provides more information on symptoms. And check out HPRC’s Injury Prevention section for more on how to avoid injury.
Sometimes just understanding what’s going on can help the process of recovery. If you’re experiencing post-traumatic stress disorder (PTSD), it might help to have a better idea of how your brain functions and how the various parts are supposed to work. This also can help you understand the treatments used to help “rewire” your brain, so it can work properly again.
PTSD is a mental health condition stemming from traumas—experienced during combat, disasters, or violence—that impact brain functioning. The alarm system in your brain, that normally helps ensure your survival, malfunctions; it becomes triggered too easily. In turn, parts of your brain responsible for thinking and memory stop functioning properly. When this happens, you have difficulty comparing what’s happening now with safe events from the past. Read more...
Breakfast really is the most important meal of the day. Eating cereal with milk, for example, nourishes your body with potassium, calcium, and vitamin D. Since 50% of all milk is consumed during breakfast, you might fall behind nutritionally if you skip your morning serving.
Studies show that breakfast eaters often weigh less and feel less hungry later in the day than those who skip breakfast. They often have improved concentration, problem-solving abilities, and hand-eye coordination too. If you’re an endurance athlete, fuel up at breakfast for peak performance.
Aim for a well-balanced meal by including any 3 of the following: grains, dairy, protein, fruits, vegetables, and healthy fats. Read more...
In the sea of dietary supplements, can you tell which ones are safe to take and which to avoid? Do you often find yourself confused, wondering what you should be looking for in a product? Operation Supplement Safety (OPSS) has you covered. Here are just some of the tools that OPSS provides to help you choose supplements wisely:
- Frequently Asked Questions (FAQs). HPRC receives hundreds of questions every year, and we’ve put answers to the most frequently asked questions in this section of OPSS. You’ll find information about banned substances in the military, hot-topic dietary supplement ingredients, and more.
- OPSS Scorecard. The scorecard consists of just 7 questions to show you what to look for on a product label and help you determine if a product is okay or a “no-go.”
- OPSS High-Risk Supplement List. With HRSL, you can see if a certain dietary supplement product might pose a health or sport anti-doping risk.
- Natural Medicines Comprehensive Database. NMCD, a partner of HPRC, provides information about the safety and effectiveness of thousands of dietary supplement products and ingredients. And best of all, it’s free to all DoD personnel with a “.mil” email address.
The goal of OPSS is to provide you with the most reliable and relevant information about dietary supplements, but if you can’t find what you’re looking for, send us a question using our Ask the Expert feature.