The iWorx newsletter is a FREE monthly publication dedicated to sharing teaching laboratory techniques and other useful information with educators in the fields of Anatomy and Physiology. We will also be sending you technical information and info on new developments at iWorx that we feel may be of use to you in your teaching and research activities.

About iWorx
iWorx has everything you need to add excitement and distance learning to any physiology teaching program. Our products include data acquisition hardware, professionally -developed physiology courseware, innovative web tools, and a full selection of transducers, cables, front ends and accessories.

iWorx/CB Sciences
One Washington St.
Suite 404
Dover, NH 03820
P: 800-234-1757
F: 603-742-2455
info@iworx.com

© 2005 CB Sciences, Inc. Patent pending. iWorx is a trademark of CB Sciences, Inc.

March 2006

  Experiment: Breathing Techniques and Variation
  in Heart Rate

The effect of breathing on heart activity has been known for thousands of years and studied extensively for hundreds of years. Breathing is a function that can be performed both voluntarily and involuntarily. When exercising and recovering from exercise, the depth and rate of breathing are adjusted by the autonomic nervous system.  Conscious breathing can influence portions of the autonomic nervous system that control heart rate, circulation, muscle tension, and many other bodily functions not easily assessed. 

In this experiment, students perform some voluntary breathing techniques and measure the effect that these techniques have on their heart rates and respiratory sinus arrhythmia (RSA) prominence.  The different breathing techniques include: breath holding (apnea), shallow abdominal breathing, rapid bellows breathing, and deep abdominal breathing.

Download high resolution  press optimized or low resolution screen optimized Breathing Techniques and Variation in Heart Rate Experiment (PDF file).

Tech Note:  RM-204 Respiration Monitor

The RM-204 Respiration Monitor is a transducer used to measure of relative depth and frequency of breathing in a human subject during experiments where it is impractical to monitor breathing with a spirometer.  The RM-204 permits breathing rates and relative amplitudes to be measured easily, accurately, and unobtrusively while the subject performs another task like a psychological test.

Learn more about the
RM-204 from this tech note. 

For a limited time, iWorx is offering its customers a 30% discount on purchase of the RM-204 Respiration Monitor until May 1, 2006.  Customers in the U.S. and Canada can order directly online.

RM-204

Respiration Monitor

$195

$135

  Users Area: Log-in or Register for Access to LabScribe
  Installers, Lab Manuals, and Settings Files.

Whether you plan to download any of the experiments announced in recent editions of the iWorx Newsletter or a new copy of the LabScribe Installation CD, you need a password and an ID to access the download sites for these items. 

To register for a new ID and password, please go here.   After you receive confirmation that user account has been activated, return to the same site and click on the Enter link. 

Registered users can log-in here.

To download screen or press optimized copies of the latest lab experiments and Tech Notes published in the iWorx Newsletters, go here and select the lab experiment of interest.

If you plan to use any of the experiments or manuals announced in recent editions of the iWorx Newsletter, you should obtain a copy of the settings group used to configure LabScribe for these experiments.  To download the settings file, right click here and choose "Save Target As" in the Internet Explorer browser or "Save Link As" in the Firefox browser.  Save the file in your LabScribe Folder.  When you launch LabScribe, the settings group will be available from Load Group command in the Settings menu.

Web Resources

Learn more about respiratory sinus arrhythmia, spirometry, the heart, and lungs from our external Web resources page.

On this page we have also accumulated a host of links to informative, external physiology Web sites and conveniently categorized them into major sub categories for easy reference.

We are pleased to announce the launch of our new e-commerce Web site for data acquisition and analysis solutions for the life sciences.  Please visit us at www.iworx.com.  Customers in the U.S. and Canada can now purchase many of our physiology teaching products and replacement components directly online.

Special offer:  Get free shipping for any online purchases over $50 until May 1, 2006.

Clearance Items

iWorx has a large supply of new and trade-in items at up to 70% discount.  Also check with us about trade in allowances for your older Powerlab or Biopac equipment.  Customers in the U.S. and Canada can order directly online. See specials