Based on the linked source; automatically prepared and checked against the original report.
Study design
Researchers assessed 16 athletes with spinal cord injury—14 men and two women—during an official wheelchair rugby match. Participants averaged 33.3 years of age. The team recorded baseline spirometry, anthropometric measures and International Wheelchair Rugby Federation classification. Playing time averaged 23.6 minutes, while perceived exertion averaged 4.3 on the Borg scale. Exhaled breath condensate was collected before and 20 minutes after play.
Overall findings
Across the full sample, hydrogen peroxide and nitrite concentrations in exhaled breath condensate were higher after the match. The reported statistical significance was p=0.0042 for hydrogen peroxide and p=0.031 for nitrite. The study examined these substances as markers relevant to airway oxidative stress, but the available record is an abstract summary rather than a full-paper review.
Classification differences
Athletes in the higher-functional-capacity group, defined as more than 1.5 classification points, showed a post-exercise hydrogen peroxide increase and a trend toward higher nitrite. The lower-capacity group, at 1.5 points or below, began with higher concentrations of both markers and showed no exercise-related change. Classification was inversely associated with baseline hydrogen peroxide, while BMI was positively associated with nitrite. The authors said it remains unclear whether the response is physiological or pathological.
