Archive for the 'Exercise' Category

Exercise Perspiration: Polyester’s ‘Wicking’ versus Cotton’s Absorbency & Comfort

‘Wicking’ of workout clothing is a term in sport for a fabric that moves perspiration away from the skin for a more comfortable workout.  Polyester, Gore-Tex and other made-made materials have been proven to perform this task better than natural-materials like cotton and rayon (made from tree bark), but are they preferred?

Yes, for large amounts of perspiration, wicking-materials are better because they get the perspiration away from the skin, to the outside of the fabric.  This prevents the skin from becoming saturated on the surface which decreases its surface-area and ability to cool.  The higher the skin surface-area the better heat loss and more comfortable workout when the body is particularly hot.  However, when sweating profusely in cold environments, like running outdoors in the Winter, wicking is only good if there is ANOTHER layer of clothing worn atop.  This will prevent the cold air from chilling the body, because polyester transmits cold more than cotton.  Wearing fewer items allows for less friction of the arms as they rub onto the trunk and legs as they rub onto each other and weight from the additional piece of clothing.

At the same time, contrarily, wicking is NOT preferred!  How so?

Cotton and other natural fibers are more beneficial when sweating is not profuse and training outside in cool not cold weather.  The sweat is absorbed like a sponge into the fabric and conveys the cooling effect of evaporation to the skin whose surface-area is expanded for better ventilation.  This keeps the athlete cooler and more comfortable when it is not so cold.  If it is very cold outside an additional outer layer of clothing is necessary to retain heat.  Most times, cotton usage does not require an additional layer.  Because it is a natural material cotton softens and moves with the body better than polyester which when damp chafes the skin.

Although no studies, to my knowledge, have been performed on the deleterious effects of artificial fabrics in close contact with the skin, but I suspect, particularly when sweating, natural materials are safer should be used as much as possible for sport, work and play.

Read more on my exercise recommendations at www.DrSaracino.com’s “Health Information” page.  I welcome your comments.

Muscle & Fitness Magazine Article: The Squat Exercise

The benefits of the squat exercise (deep knee bends with weights) are so great, it should be performed consistently for the rest of our lives! Just think of how many stairs we climb, get out of bed and walk.  Squats utilize more muscle groups and weight-bearing joints than any other exercise. Doing squats not only adds tremendous strength to the quadriceps and gluteal muscles but adds stability to the knees and ankles and helps prevents low back pain. Whether you are a professional athlete, fitness enthusiast or in exercise rehabilitation, you can benefit from squats.

Read the full-length article by clicking its thumb nail on the home page of www.DrSaracino.com

The Best Type of Exercise

High-intensity, low-repetition (otherwise known as: resistance, strength or free-weight training) exercise has been proven to be one of the best forms of activity, because it develops muscle strength without damaging the joints.

On the other hand, high-repetition, low-resistance (jogging, racquet sports, etc.) activities are not as beneficial, because they provide less muscle strength and excessive wear of the joints. Yes, this form of exercise promotes cardiovascular health by strengthening the heart, but so does strength-training in a different way.

It decreases the ‘resting resistance’ of the heart which is the more important second number of one’s blood pressure reading. The diastolic pressure (systolic/diastolic, example: 120/70) is important because it is the amount of (hydraulic) blood pressure in arteries in between heart beats.

Read more about this topic at http://www.DrSaracino.com:
http://www.drsaracino.com/chiropractic-neurology-health-articles.html
I look forward to hearing from you soon.


Topics Discussed

Share this Blog

Bookmark and Share

Blog Stats

  • 15,398 hits