Seven horses were exercised on a high speed treadmill with and without FLAIR® Equine Nasal Strips. When they were wearing nasal strips, VO2 was significantly reduced indicating a reduction in the work of breathing. Broncho alveolar lavage (BAL) fluid analysis also showed a significant reduction in the number of red blood cells recovered from the lungs of horses when wearing FLAIR Strips as compared to the control run.

Five thoroughbred horses were exercised on a high speed treadmill at near maximal efforts four times under the following conditions: control; wearing FLAIR Equine Nasal Strips; medicated with Furosemide; wearing FLAIR Equine Nasal Strips and medicated with Furosemide. Horses wearing FLAIR Strips showed a significant reduction of EIPH based on analysis of BAL fluid.

Seven thoroughbred horses were subjected to two sets of experiments, control and nasal strip, in random order 7 days apart. Simultaneous measurements of core temperature, arterial and mixed venous blood gases/pH and blood lactate and ammonia concentrations were made at rest, during submaximal and near-maximal exercise, and during recovery. Statistically significant differences between the control and nasal strip experiments were not reported. The authors, however, failed to measure pulmonary gas exchange. Due to lack of quantitative evaluation, this study is inconclusive as to whether the Strips reduced EIPH. Additionally, photographs from the study showed that placement of the nasal strips was not correct; it was too far above the nostrils. This study has been criticized by other authors.

Eight thoroughbred horses were exercised at 120% maximal oxygen consumption (VO2max) by sprinting on a high speed treadmill under the following conditions: control; wearing FLAIR Equine Nasal Strips; medicated with furosemide; wearing FLAIR Equine Nasal Strips and medicated with furosemide. Horses treated with furosemide carried weight equal to that caused by fluid loss after furosemide administration. Horses wearing FLAIR Strips showed a significant reduction of EIPH based on analysis of BAL fluid. Horses injected with furosemide showed a greater reduction in EIPH. Both VO2 and CO2 were significantly lowered in the nasal strip and nasal strip + furosemide trials over control. The researchers concluded that "the external nasal strip appears to lower the metabolic cost of supramaximal exertion in horses."

Six horses were exercised on a treadmill at speeds corresponding to 100 and 120% maximal heart rate with and without application of FLAIR Strips. Tracheal pressures, airflow, and heart rate were measured. Main effects of the nasal strip were a significant decrease in inspiratory airway resistance and a significantly lower negative peak tracheal inspiratory pressure. The researchers stated that nasal strips probably decrease the amount of work required for respiratory muscles in horses during intense exercise and may reduce the energy required for breathing.

23 thoroughbred racehorses in active training at Golden Gate Fields Racetrack in California were raced with and without FLAIR Equine Nasal Strips. All horses were administered furosemide 4 hours before each race. Mean red blood cell count in BAL fluid in horses with severe bleeding was significantly reduced when wearing nasal strips. The mean lymphocyte count was also significantly reduced in BAL fluid of horses when wearing nasal strips.

Six thoroughbred horses were exercised on a treadmill at near-maximal running to fatigue under the following conditions: control; wearing nasal strips; medicated with furosemide; and wearing nasal strips and medicated with furosemide. A very interesting, and novel, finding of the current investigation is that while both furosemide and the nasal strip reduced EIPH severity, the nasal strip was equally as effective as furosemide during maximal running to fatigue. Both furosemide and the nasal strip caused an increased time-to-fatigue. As in previous studies of the nasal strip, VO2 was reduced, probably due to reduction of the O2 cost of breathing.

Almost 400 Thoroughbred horses that wore nasal strips were evaluated at Calder Race Course in Florida in 1999–2000. The horses with the strip had a win percentage 3.4% higher than horses that did not wear a strip. Horses wearing a nasal strip also had a 15% decrease in the interval to the next race (23 days) compared with the race-to-race interval before wearing a nasal strip (29 days).