Table 3.

Forearm hemodynamics at rest and with incremental exercise during normoxia and hypoxia in men and women

	Rest	10%	20%
Young adults
FBF, ml/min
Men (n = 16)
Normoxia	80 ± 9	250 ± 17†	426 ± 28†
Hypoxia	86 ± 8	289 ± 17*†	486 ± 29*†
Women (n = 15)
Normoxia	41 ± 4	137 ± 11†‡	224 ± 20†‡
Hypoxia	52 ± 6*	172 ± 18*†‡	273 ± 24*†‡
FVC, ml×min−1×100 mmHg−1
Men (n = 16)
Normoxia	89 ± 9	270 ± 16†	446 ± 28†
Hypoxia	96 ± 9	312 ± 16*†	510 ± 29*†
Women (n = 15)
Normoxia	47 ± 5	157 ± 12†‡	254 ± 22†‡
Hypoxia	60 ± 6*	201 ± 19*†‡	323 ± 26*†‡
Older adults
FBF, ml/min
Men (n = 5)
Normoxia	78 ± 6	263 ± 35†	430 ± 68†
Hypoxia	87 ± 9	320 ± 42*†	471 ± 74*†
Women (n = 6)
Normoxia	56 ± 10	170 ± 18†‡	262 ± 40†‡
Hypoxia	66 ± 15	242 ± 26*†‡	285 ± 41†‡
FVC, ml×min−1×100 mmHg−1
Men (n = 5)
Normoxia	73 ± 5	237 ± 30†	379 ± 56†
Hypoxia	82 ± 7	286 ± 38*†	424 ± 73*†
Women (n = 6)
Normoxia	58 ± 11	169 ± 21†‡	251 ± 40†‡
Hypoxia	65 ± 14	202 ± 28*†‡	280 ± 39*†‡

Values are means ± SE; n, no. of subjects. FBF, forearm blood flow; FVC, forearm vascular conductance.

^*P < 0.05 vs. normoxia.

^†P < 0.01 vs. previous exercise intensity.

^‡P < 0.05 vs. men.