Aerobic capacity in swimming, cycling and arm cranking in swimmers aged 11–13 years

Table 2 Maximum pulmonary gas exchange indicators under specific and non-specific testing conditions

	SW	CE	ACE	%diff SW vs CE	%diff SW vs ACE	%diff CE vs ACE
V̇O₂peak (L^/min)	2.213 ± 0.508 ^##	2.408 ± 0.415 ^**	1.766 ± 0.407 ^**##	− 8%	+ 20%	+ 27%
V̇_Epeak (L/min)	84.940 ± 12.629 ^##	98.421 ± 15.406 ^**	69.412 ± 18.195 ^**##	− 14%	+ 18%	+ 29%
V̇_Tpeak (L)	1.776 ± 0.453 ^##	1.969 ± 0.547 ^**	1.620 ± 0.455 ^*##	− 10%	+ 9%	+ 18%
BFpeak (bpm)	62.6 ± 8.1	61.2 ± 12.3	53.4 ± 10.5 ^**#	+ 2%	+ 15%	+ 13%
RERpeak	1.06 ± 0.03 ^##	1.18 ± 0.05	1.08 ± 0.04 ^##	–10%	–2%	+ 8%

%diff Percentage difference among different testing conditions, SW Swimming test, CE Cycle ergometer test, ACE Arm crank ergometer test, V̇O₂ Oxygen uptake, V̇_E Min ventilation, V_T Tidal volume, BF Breathing frequency, RER Respiratory exchange ratio, bpm breaths per min
^*P < 0.05, differences from SW
^**P < 0.01, differences from SW
^#P < 0.05, differences from CE
^##P < 0.01, differences from CE

ISSN: 2052-1847