Effect of heavy load carriage on cardiorespiratory responses with varying gradients and modes of carriage

Table 2 Comparison between mode and gradient with their significance, pairwise comparison, P value and F value for the different parameters

Dependent variable	Independent variable	F value	P value	Post hoc Bonferroni test (pairwise comparison)
HR (beats/min)	Mode	F_{(2, 10)} = 50.92	0.000^*	M₁-M₂^* (0.001)
	Mode	F_{(2, 10)} = 50.92	0.000^*	M₂-M₃, NS
	Gradient	F_{(4, 20)} = 275.55	0.000^*	G₁- G₃^*(0.000)
				G₁- G₄^*(0.000)
				G₁- G₅^*(0.000)
				G₂- G₃^*(0.025)
				G₂- G₄^*(0.001)
				G₂- G₅^*(0.000)
				G₃- G₄^*(0.000)
				G₃- G₅^*(0.000)
				G₄- G₅^*(0.001)
	Mode × Gradient	F_{(8, 40)} = 12.015	0.000^*	–
RF (breaths/min)	Mode	F_{(1.112, 5.560)} = 17.104	0.000^*	M₁-M₂^*(0.000)
	Mode	F_{(1.112, 5.560)} = 17.104	0.000^*	M₂-M₃, NS
	Gradient	F_{(4, 20)} = 19.679	0.001^*	G₂- G₅^*(0.022)
				G₃- G₅^*(0.027)
				G₄- G₅^*(0.004)
	Mode × Gradient	F_{(8, 40)} = 5.137	0.000^*	–
VO₂ [ml/(min·kg)]	Mode	F_{(2, 10)} = 4.991	0.000^*	M₁-M₂, NS
	Mode	F_{(2, 10)} = 4.991	0.000^*	M₂-M₃, NS
	Gradient	F_{(4, 20)} = 963.97	0.031^*	G₁- G₃^*(0.000)
				G₁- G₄^*(0.000)
				G₁- G₅^*(0.000)
				G₂- G₃^*(0.000)
				G₂- G₄^*(0.000)
				G₂- G₅^*(0.000)
				G₃- G₄^*(0.000)
				G₃- G₅^*(0.000)
				G₄- G₅^*(0.000)
	Mode × Gradient	F_{(8, 40)} = 5.663	0.000^*	–
EE (kcal/min)	Mode	F_{(2, 10)} = 4.802	0.000^*	M₁-M₂, NS
	Mode	F_{(2, 10)} = 4.802	0.000^*	M₂-M₃, NS
	Gradient	F_{(4, 20)} = 957.28	0.035^*	G₁- G₃^*(0.000)
				G₁- G₄^*(0.000)
				G₁- G₅^*(0.000)
				G₂- G₃^*(0.000)
				G₂- G₄^*(0.000)
				G₂- G₅^*(0.000)
				G₃- G₄^*(0.000)
				G₃- G₅^*(0.000)
				G₄- G₅^*(0.000)
	Mode × Gradient	F_{(8, 40)} = 6.789	0.000^*	–

HR Heart rate, VO₂ Oxygen consumption, EE Energy expenditure, RF Respiratory frequency; ^*P < 0.05; NS Not significant, G₁. Grade 1, −10%; G₂. Grade 2, −5%; G₃. Grade 3, 0%; G₄. Grade 4, 5%; G₅. Grade 5, 10%; M₁. Mode 1, NL; M₂. Mode 2, distributed mode; M₃. Mode 3, compact mode; “-”. No data

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