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What’s Going on in the HPL?

Recent Research

Breathe Right

The HPL has carried out two research studies on the effectiveness of the Breathe Right nasal strips in enhancing athletic performance. In one, twelve college athletes (track and field participants) were tested with the Maximal Anaerobic Running Power (MARP) protocol under three conditions: with a Breathe Right strip, with a placebo strip, and with nothing on their noses. The protocol involves 20s sprints followed by 100s recoveries at progressively faster treadmill rates. Four of the athletes were able to go an extra stage with the Breathe Right strip. For them, oxygen consumption was higher and lactate levels were lower.

In another test, twenty college football players ran a maximum of twenty 40 yard sprints, with and without Breathe Right strips. Mouth guards were in place during the sprint. After each sprint, sprint time and time needed to recover to a heart rate of 130 bpm were recorded. Minimal nasal cross sectional area was determined with acoustic rhinometry before and after applying the Breathe Right strip. The nasal cross sectional area increased by an average of 17% for this group. This increase correlated with faster recovery times while wearing the Breathe Right strip. The results will be presented in a symposium at the 1996 AAHPERD convention in Atlanta.

Nordic Track

A research study was performed to determine the mechanical work and metabolic demand of the Nordic Track 3DX Exercise Rider. 10 male and 10 female subjects completed multiple three minute stages in both the push and pull modes. From these data, a regression equation will be generated to predict the metabolic cost for each setting.

Rollerblade

Rollerblade has asked the biomechanists in the HPL to help them design a wrist guard. Rollerblade wants to make a new wrist guard which is strong enough to withstand the forces induced in falls, while protecting the wearer against injury. The HPL staff will have two undertakings: 1) design wrist bands that will measure the force incurred during falls; and 2) record the force data when people fall. The information will help Rollerblade design tests to make sure their wrist guards do not break during use.

Publications and Presentations

Carbohydrate drinks and cycling performance. Bacharach, D.

  • W.

    , von Duvillard, S. P., Rundell, K. W., Meng, J., Cring,

  • M.

    , Szmedra, L. and J. Castle. journal of Sports Medicine

and Physical Fitness 34(2):161-168, 1994. Anaerobic power differences in fit women across age. Pankey, R. B., Bacharach, D. W. and R. A. Gaugler. Journal of Strength and Conditioning Research 10(l):62-64, 1996. Intermediate and long-term anaerobic performance of elite alpine skiers. Bacharach, D. W. and S. P. von Duvillard. Medicine and Science in Sport and Exercise 27(3):305- 309, 1995. Physiological characteristics and performance of top U. S. Biathletes. Rundell, K. W. and D. W. Bacharach. Medicine and Science in Sports and Exercise 27(9):1302- 1310, 1995. Relationship of blood urea nitrogen to training intensity of elite female biathlon skiers. Bacharach, D. W., Petit, M. and K. W. Rundell. journal of Strength and Conditioning Research (In press). Development of a field test battery for U.S. Biathlon skiers. Bacharach, D., Gaskill, S., Rundell, K., Pichler, W. and A. Shalna. Presented at the 1st International Congress on Skiing and Science, St. Christoph, Austria, January, 1996. Implementation of a field test battery for biathlon skiers. Bacharach, D. Presented at the Berlin Free University Sports Symposium, January, 1996. Lactate accumulation during laboratory testing in elite alpine ski racers. Rice, D., von Duvillard, S., Bacharach, D. and S. Johnson. Presented at the National ACSM Meeting, June, 1995. Kinematics and ground reaction forces during takeoff of the long jump and triple jump. Weber, S., Bacharach, D. and G. Street. Presented at the National ACSM Meeting, June, 1995. Quadriceps muscle activation during forward and backward running. Steinley, M. and D. Bacharach. Presented at the National ACSM Meeting, June, 1995. Anaerobic power and performance of elite junior male alpine ski racers. Bacharach, D. and S. P. von Duvillard. Presented at the AAHPERD National Meeting, March, 1995.

(Continued from the previous page) Working in Lake Placid for the summer also provided the two with future opportunities. Paul just returned from a second trip to New York to help out with the National Biathlon Championships,

and Mark made a trip to Steamboat Springs, Colorado in early December to work with the U.S. Nordic Combined Ski Team at a World Cup event held there. Interning at the Olympic Training Centers is just one of many experiences

that are available to the graduate students. Whether the students choose to work with athletes, work in cardiac rehab, or take advantage of other opportunities, internships provide a fascinating way to learn.

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