Table 1.

Group mean MIP values at pre-RMU, baseline (post-RMU), post-IMF and post-PF (T_lim) for the four protocols (mean ±s.d.)

Protocol	Pre-RMU	Baseline MIP (cmH2O)	Post-IMF	Post-PF
IMF + PF	120 ± 31.7*	135 ± 31.3	100 ± 26.0‡§.	131 ± 28.6‡¶#
IMFrest + PF	129 ± 34.1*	137 ± 32.4	97 ± 30.8‡§.	130 ± 33.3‡¶#
IMFpre + PF	141 ± 29.1*†	161 ± 32.0†	130 ± 25.0‡	148 ± 27.3‡¶
IMFpost+ PF	141 ± 32.0*†	163 ± 29.9†	114 ± 23.4‡	138 ± 24.1‡¶

^*Significantly lower than baseline (P ≤ 0.01)

^†significantly higher compared to pre-IMT values (IMF + PF and IMF_pre + PF, P ≤ 0.01)

^‡significantly lower than baseline (P ≤ 0.01)

^¶significantly higher than post-IMF (P ≤ 0.01)

^§significantly lower than IMF_pre + PF for post-IMF values (P ≤ 0.01)

^#significantly lower than IMF_pre + PF for post-PF values (P ≤ 0.05). During the IMF_pre + PF protocol, the IMF load was equivalent to 60% of the pre-IMT MIP, which equated to 50% of the post-IMT MIP. During the IMF_post+ PF protocol, IMF load was equivalent to 60% of the post-IMT MIP.