NDLI: Effects of negative air ions on oxygen uptake kinetics, recovery and performance in exercise: a randomized, double-blinded study

Content Provider	Springer Nature Link
Author	Nimmerichter, Alfred Holdhaus, Johann Mehnen, Lars Vidotto, Claudia Loidl, Markus Barker, Alan R.
Copyright Year	2013
Abstract	Limited research has suggested that acute exposure to negatively charged ions may enhance cardio-respiratory function, aerobic metabolism and recovery following exercise. To test the physiological effects of negatively charged air ions, 14 trained males (age: 32 ± 7 years; $$ \overset{\cdotp }{V}{\mathrm{O}}_{2 \max } $$ : 57 ± 7 mL min−1 kg−1) were exposed for 20 min to either a high-concentration of air ions (ION: 220 ± 30 × 103 ions cm−3) or normal room conditions (PLA: 0.1 ± 0.06 × 103 ions cm−3) in an ionization chamber in a double-blinded, randomized order, prior to performing: (1) a bout of severe-intensity cycling exercise for determining the time constant of the phase II $$ \overset{\cdotp }{V}{\mathrm{O}}_2 $$ response (τ) and the magnitude of the $$ \overset{\cdotp }{V}{\mathrm{O}}_2 $$ slow component (SC); and (2) a 30-s Wingate test that was preceded by three 30-s Wingate tests to measure plasma [adrenaline] (ADR), [nor-adrenaline] (N-ADR) and blood [lactate] (BLac) over 20 min during recovery in the ionization chamber. There was no difference between ION and PLA for the phase II $$ \overset{\cdotp }{V}{\mathrm{O}}_2 $$ τ (32 ± 14 s vs. 32 ± 14 s; P = 0.7) or $$ \overset{\cdotp }{V}{\mathrm{O}}_2 $$ SC (404 ± 214 mL vs 482 ± 217 mL; P = 0.17). No differences between ION and PLA were observed at any time-point for ADR, N-ADR and BLac as well as on peak and mean power output during the Wingate tests (all P > 0.05). A high-concentration of negatively charged air ions had no effect on aerobic metabolism during severe-intensity exercise or on performance or the recovery of the adrenergic and metabolic responses after repeated-sprint exercise in trained athletes.
Starting Page	1503
Ending Page	1512
Page Count	10
File Format	PDF
ISSN	00207128
Journal	International Journal of Biometeorology
Volume Number	58
Issue Number	7
e-ISSN	14321254
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-10-23
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Environmental physiology Central fatigue Catecholamine Ergogenic Environment Biophysics and Biological Physics Meteorology Animal Physiology Plant Physiology Environmental Health
Content Type	Text
Resource Type	Article
Subject	Ecology Health, Toxicology and Mutagenesis Atmospheric Science

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