Table 3. Maximal handgrip strengths of baseline, the subliminal point of dyspnea, and the supraliminal point of dyspnea.

Baseline (kg)	Subliminal point (kg)	Supraliminal point (kg)
28.1 ± 4.5	27.2 ± 5.5	25.9 ± 5.1*†

* significant difference between the subliminal and supraliminal points (p < 0.03). † significant difference between baseline and the supraliminal point (p < 0.001). The subliminal point is the subliminal point of dyspnea which was estimated as the 50% threshold time of dyspnea induced by breath-holding. The supraliminal point is the supraliminal point of dyspnea which was estimated as the 50% DRT point.