. 2015 Mar 30;2015:654204. doi: 10.1155/2015/654204

Table 1.

Data from multiple studies pertaining to the effects of type 2 diabetes mellitus on peak heart rate (HR), peak oxygen uptake ( $\dot{V} O_{2}$ ), and the time constant of oxygen uptake ( $\dot{V} O_{2} τ$ ). Mean values are presented and the “Mean” corresponds to the average of the mean values from each study. “%diff” is the percentage difference between control and diabetic subjects. C = control subjects. DM = type 2 diabetes mellitus. “Mode” of exercise testing is cycling (C) or treadmill (T).

Reference	Sample size		Age (Y)			BMI			Peak HR (bpm)			Peak $\dot{V} O_{2}$ (L/min)			$\dot{V} O_{2} τ$ (s)			Mode
Reference	C	DM	C	DM	%diff	C	DM	%diff	C	DM	%diff	C	DM	%diff	C	DM	%diff	Mode
Adult female, untrained, <60 y
[17]	21	15	30–55	30–55		29.1	30.9		163	163	0.0	1.77	1.37	−22.6	31.5	37.1	17.8	C
[12]	10	10	39.3	42.5	8.1	28.3	31.9	12.7	166	169	1.8	1.64	1.52	−7.3	—	—	—	C
[18]	10	10	37	42	13.5	30.8	33.1	7.5	168	167	−0.6	1.73	1.36	−21.4	27.8	36.8	32.4	C
[19]	9	9	42.5	49.1	15.5	29	34.4	18.6	165	145	−12.1	1.77	1.4	−20.9	24.8	39.1	57.7	C
[20]	16	16	53.4	54.8	2.6	29	30.2	4.1	154	154	0.0	1.6	1.5	−6.3	33.6	43.3	28.9	C
Mean	12.7	11.3	37.5	40.7	7.6	29.6	33.1	13.2	167.0	161.7	−3.1	1.76	1.56	−12.2	29.4	39.1	34.2

Adult male, untrained, <60 y
[17]	13	14	30–55	30–55		28.5	30.6	7.4	161	163	1.2	2.46	2.26	−8.1	34.8	45.1	29.6	C
[20]	16	16	57.8	57.4	−0.7	28.2	29	2.8	161	157	−2.5	2.8	2.5	−10.7	35.3	43.8	24.1	C
[11]	11	15	48	52	8.3	28.8	29.3	1.7	169	160	−5.3	3.2	2.5	−21.9	26.8	41.6	55.2	C
[21]	11	8	49	53	8.2	27.5	28.7	4.4	175	169	−3.4	2.83	2.31	−18.4	—	—	—	C
Mean	12.8	13.3	51.6	54.1	5.3	28.3	29.4	4.1	166.5	162.3	−2.5	2.8	2.4	−14.8	32.3	43.5	36.3

Mixed (4 F/6 M), untrained, <60 y
[22]	10	10	51	50	−2.0	27	30	11.1	161	153	−5.0	2.3	1.9	−17.4	—	—	—	T

Adult male, untrained, >60 y
[23]	12	12	62	65	4.8	28.4	29.2	2.8	—	—		2.72	1.98	−27.2	41	43	4.9	C
[11]	10	18	64	64	0.0	28.2	30.3	7.4	156	154	−1.3	2.7	2.4	−11.1	40.5	41.1	1.5	C

Adult female, untrained (UT) and trained (T), <60 y
[24]	9 (UT)	8 (UT)	37	43	16.2	30.3	30.9	2.0	167	166	−0.6	1.74	1.42	−18.4	27.7	47.7	72.2	C
[24]	9 (T)	8 (T)	37	43	16.2	31.8	30.5	−4.1	164	164	0.0	1.86	1.75	−5.9	18.9	37.4	97.9	C

Adolescents
[25]	10	8	15.2	14.9	−2.0	31.1	38.3	23.2	186	172	−7.5	2.07	2.18	5.3	—	—	—	C
[14]	27	13	15.1	15.4	2.0	35.5	36.5	2.8	175.7	174.2	−0.9	2.2	2.12	−3.6	—	—	—	C