The Company of Biologists

Table 1.

Regression equations describing the relationship between measured cardiorespiratory variables and swimming velocity (U)

y	Temperature (°C)	N	n	a	b	LL_a	UL_a	S_b	r²	P
Exponential regressions
Ṁ_O2 (mg min⁻¹ kg⁻¹)	20^*	10	32	1.55	0.85	1.48	1.63	0.04	0.94	<0.01
	25	2	9	3.31	0.61	3.21	3.42	0.03	0.99	<0.01
(Ca_O2-Cv̄_O2)(mg ml⁻¹)	20	4	14	0.06	0.67	0.06	0.07	0.05	0.93	<0.01
	25	2	9	0.08	0.52	0.07	0.08	0.06	0.92	<0.01

y	Temperature (°C)	N	n	a	b	LL_a	UL_a	S_b	r²	P
Exponential regressions
Ṁ_O2 (mg min⁻¹ kg⁻¹)	20^*	10	32	1.55	0.85	1.48	1.63	0.04	0.94	<0.01
	25	2	9	3.31	0.61	3.21	3.42	0.03	0.99	<0.01
(Ca_O2-Cv̄_O2)(mg ml⁻¹)	20	4	14	0.06	0.67	0.06	0.07	0.05	0.93	<0.01
	25	2	9	0.08	0.52	0.07	0.08	0.06	0.92	<0.01

y	Temperature (°C)	N	n	a	b	S_a	S_b	S_YX	r²	P
Linear regressions
V̇_b (ml min⁻¹ kg⁻¹)	20	4	14	29.17	3.67	1.78	1.41	2.94	0.36	0.02
	25	2	9	43.31	4.07	2.06	1.77	3.19	0.43	0.05
f_H (beats min⁻¹)	20	4	14	77.06	7.76	4.61	3.66	7.64	0.27	0.05
	25	2	9	117.14	12.14	7.45	6.41	11.52	0.34	0.10
V_S (ml beat⁻¹ kg⁻¹)	20	4	14	0.38	0.01	0.02	0.02	0.03	0.01	0.69
	25	2	9	0.37	0.00	0.02	0.02	0.03	0.01	0.84

y	Temperature (°C)	N	n	a	b	S_a	S_b	S_YX	r²	P
Linear regressions
V̇_b (ml min⁻¹ kg⁻¹)	20	4	14	29.17	3.67	1.78	1.41	2.94	0.36	0.02
	25	2	9	43.31	4.07	2.06	1.77	3.19	0.43	0.05
f_H (beats min⁻¹)	20	4	14	77.06	7.76	4.61	3.66	7.64	0.27	0.05
	25	2	9	117.14	12.14	7.45	6.41	11.52	0.34	0.10
V_S (ml beat⁻¹ kg⁻¹)	20	4	14	0.38	0.01	0.02	0.02	0.03	0.01	0.69
	25	2	9	0.37	0.00	0.02	0.02	0.03	0.01	0.84

Relationships were determined over a velocity range of approximately 0.3-2.3 BL s⁻¹; ^* velocity range 0-2.3 BL s⁻¹.

Exponential regression equations expressed as y=ae^bU;linear regression equations expressed as y=a+bU. S_a=s.e.m. of a; S_b=s.e.m. of b; S_YX=s.e.m. of estimate; error intervals for a in exponential equations were asymmetric, thus lower limits (LL) and upper limits (UL) are given. Pvalues were determined by ANOVA.

View Large

This Feature Is Available To Subscribers Only