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Cold stressMobility Forum , Jan/Feb 1999 by Morgan, TiffanyDay after day, SSgt Freezeman puzzles over his snow removal team. As a supervisor for the seasonal snow removal detail, he notices that his twenty workers` productivity steadily decreases until lunch break. After lunch, the output starts at 100% again, but steadily declines through the remainder of the day. "I don`t understand,"he says. The workers get to walk around and I rotate them from equipment to equipment. They take a break or two to relax. They`ve even got those new ergonomic shovels to take the load off their back. It`s not that cold out here. So, what`s the problem?" he ponders. What Sgt Freezeman is observing is a perfect example of cold stress. Cold stress is the adverse reaction of one`s body to a given temperature. Excessive heat loss instigates cold stress. This loss could be through sweat and evaporation from exertion or through convection from passing air. Either source can result in cold stress injuries. According to the American Industrial Hygiene Association, the most critical and crucial time with respect to cold weather and related disorders are the very first cold days or an unexpected drastic change in temperature. The body is still lingering over the thought of warmer activities and work environments. It may not have adjusted to the new environmental conditions or may not be properly attired. The scary parts are the side effects, including lost dexterity, loss of conscience, and death with extended exposure. Background: The human body likes to maintain a core or internal temperature of 98.6 degF - the body tolerates a few degrees deviation from that standard. However, once that core drops to 93 degF, the body begins shivering, trying to generate heat from muscle contraction. At 80deg F, individuals become mentally unresponsive to external stimuli. But what do core temperature numbers mean to AIC Sunny Sunshine on the snow removal detail? It translates into worker performance and the perception of warmth in the workplace. Prevention: The best cold stress scenario is one that never happens. Prevent it from occurring. Unfortunately, there is no catch-all temperature that causes cold stress. Depending on the work required and performed, many temperatures can be acceptable work conditions. Varying body weight, metabolism, and acclimatization affect each individual`s response to a given temperature. Many factors contributing to an individual`s response to cold stress can be controlled. Even though Sgt Freezeman`s folks are outside, proper outerwear can maintain the body`s core temperature at 98.6 degrees. Here are some tips to help you avoid a chilling experience: Know the outside weather conditions and be prepared. Don`t get caught in a predicted event without the proper gear. Keep water, food, and blankets easily accessible. Drink Water. A properly hydrated body can combat cold situations much better than a dehydrated body. Stretch and warm up muscles prior to exertion. This prevents muscle tears and other injuries. Wear or bring layers of clothing. It`s easier to remove the extra articles than to produce that extra undershirt you left at home. Each layer traps a thin blanket of air to help protect the body from cold. Insulate the trunk of the body. When the body detects heat loss, blood flow to the extremities decreases as a method of conserving heat and energy. A warm trunk promotes warm extremities. Minimize exposed skin. Bared skin multiplies heat loss and promotes cold stress. Keep dry. Clothing is absolutely useless when wet, providing zero insulation value. Buddy observation is very important with respect to thermal stresses. The affected individual usually doesn`t notice a change in his/her coloring or mood. Special conditions exist for individuals performing the following types of work: Jobs requiring manual dexterity have limitations and conditions based on necessary dexterity levels. Though SSgt Freezeman`s crew may be able to perform gross movements, such as snow shoveling, the air may be too cold for fine manual dexterity. Overall productivity drops as the day progresses due to lost manualcondiskill. Jobs that handle or work with very low temperature liquids and solids also have special requirements and personal protective equipment (PPE). You can obtain PPE from your local Bioenvironmental Engineering Flight. Treatment In the event that cold stress strikes, you need to be aware of the symptoms and treatment to prevent detrimental outcomes. Table 2 describes the two most common cold stress injuries and treatment necessary. Be aware and be prepared. Watch your buddy and work within your own limits. See your Base Bioenvironmental Engineering Flight for more information and guidance. Make sure there are no cold weather casualties on your watch. Protruding through the fence were three little parachutes extended by several animated arms attached to three vibrant bodies. The little parachutes were being waved without discrimination at every crew as each aircraft taxied by. Behind the three with the parachutes were the rest of the cheering section with both arms waving above their heads and every jaw working on a prize. The long trousers quickly identified blue eyes. She was radiant! Clear up your cold fast: the trick to recovering from your cold quickly is to let your symptoms run their course. Here`s how to take the edge off while you wait - Do-It Yourself CuresNatural Health , Jan-Feb, 2002 by Maria Noel MandileCONVENTIONAL OVER-THE-counter cold medicines merely mask symptoms and, when fighting a cold, that`s a crucial mistake. Symptoms like congestion, fever, and sore throat happen for a reason--they help rid your body of the cold virus. When you let your symptoms run their course, holistic doctors say, you`ll end your cold sooner and strengthen your immune system in the process. But refusing to mask your symptoms doesn`t mean you have to feel exhausted and remain bedridden. Here`s a symptom-by-symptom guide to finding gentle relief that won`t interfere with your body`s healing process. Use as many remedies as you need. Sore Throat WHAT`S GOING ON: The cold virus often enters your body through your mouth. When virus cells become lodged in your throat, virus-fighting antibodies build up in that tissue. Those antibodies cause inflammation and soreness, but the symptoms are usually a sign that your immune system is doing its job. HOW TO FEEL BETTER FAST: Give your antibodies a hand. Zinc helps fight the virus on contact, explains Dina Khader, R.D., a nutrition consultant in Mt. Kisco, N.Y. As soon as you feel a sore throat tingle, suck on a 15 mg zinc gluconate lozenge. Continue twice a day until you`re symptom-free for 24 hours. Zinc throat sprays can also be effective, though they carry less scientific proof than zinc lozenges do. Don`t exceed 50 mg a day because too much zinc will actually damage your immune system. If your throat pain persists longer than 48 hours and is accompanied by a fever, see a health care practitioner. That`s a sign of a bacterial infection rather than a cold, and you may need a treatment better suited for that type of infection. Aches and Fatigue WHAT`S GOING ON: While your immune system fights a cold virus, your body becomes depleted of nutrients, white blood cells, and immune-boosting T cells. The result: achy muscles and low energy. This is a sign that you need to nurture yourself so your body can recharge, explains Judith Hanson Lasater, a physical therapist and yoga instructor in San Francisco and co-author of Living Your Yoga (Rodmell Press, 2000). HOW TO FEEL BETTER FAST: First, make sure you get seven to nine hours of sleep each night. Rest your body further by doing the Basic Relaxation yoga pose at least 20 minutes a day. Lie down on the floor on your back with your arms by your sides. Use rolled blankets or pillows to support your neck and knees. Close your eyes, pay close attention to your breathing, and visualize your body being healthy, says Lasater. This pose helps your body relax, which, according to studies, will strengthen your immune function. In addition to getting more rest, strengthen your antibodies with a multivitamin; take a powdered form (mixed in water) because your weakened body can absorb and use it more easily than pills. If you already have multivitamin capsules on hand, open those up into your drink. And take 1,500 mg of the enzyme bromelain three times a day between meals. This anti-inflammatory supplement helps relieve aching muscles. Nasal Congestion WHAT`S GOING ON: Your sinus cavities produce mucus to help expel viruses, so a runny nose is actually desirable. It becomes a problem, though, if thick or dried mucus blocks your nasal passages, causing new mucus to build up and your tissue to become inflamed. HOW TO FEEL BETTER FAST: One of the best ways to keep nasal mucus flowing is with a neti pot, says Alan Keith Tillotson, Ph.D., medical herbalist in Wilmington, Del., and co-author of The One Earth Herbal Sourcebook (Kensington, 2001). Use this teapotlike Ayurvedic device to flush your nasal cavity with warm salt water and to keep mucus thinned out. Follow the directions that come with your pot and perform the process when needed. After each treatment, dab a few drops of a solution made with 5 teaspoons of sesame oil and 10 drops of sandalwood essential oil (Santalum album) just inside your nasal passages. If your sinuses become blocked, use the neti pot and take 500 mg each of ginger (Zingiber officinale) and cayenne (Capsicum annuum) capsules twice a day. These two herbs stimulate circulation in sinus tissue, which helps drain the mucus, says Khader. Because bacteria thrive in mucus, see a doctor if your nasal congestion lasts for more than two weeks. Cough WHAT`S GOING ON: When your body senses the presence of a virus, it produces mucus to trap the virus and carry it out of your body. Viruses in your throat or chest also stimulate your cough reflex, which helps your body expel the mucus and the virus, says Tillotson. HOW TO FEEL BETTER FAST: Because mucus helps sweep the cold virus out of your body, spit it out if you cough it up--don`t swallow it. To thin mucus so it`s easier to expel and to soothe inflammation in your throat and chest, take i teaspoon of honey loquat syrup (available in Chinese grocery stores and some natural food stores) every two hours until your cough disappears, recommends Tillotson. Fever WHAT`S GOING ON: When you come in contact with a virus, your body temperature rises to keep the virus from replicating. However, if you take medicine too early to reduce your fever, you lose the power of this important virus suppressor, explains Tillotson. Eyes relaxation index
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