Table 2. Physiological and mechanical variables (n = 9) during submaximal rowing exercises. Data are means (±SEM).
Normoxia Hypoxia
VO2 (mL.min-1.kg-1) 30.1 (1.5) 30.3 (1.6)
VE (L.min-1) 56.5 (2.6) 66.9 (3.4) **
VT (L) 2.23 (.10) 2.16 (.09)
HR (beats.min-1) 129.7 (4.7) 140.1 (5.1) *
SR (strokes.min-1) 23.8 (1.4) 26.5 (1.1) *
Bf (breaths.min-1) 25.8 (1.6) 31.4 (1.8) **
Mean SR/Bf ratio .93 (.04) .86 (.05)
VO, oxygen consumption; V, ventilation.; VT, tidal volume, HR, heart rate; SR, stroke rate; Bf, breathing frequency; Mean SR/Bf ratio, mean stroke rate / breathing frequency ratio.* Significantly different from normoxia (p < 0.05 and p < 0.01).** Significantly different from normoxia (p < 0.05 and p < 0.01).