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International Journal of Biometeorology

, Volume 58, Issue 7, pp 1503–1512 | Cite as

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

  • Alfred NimmerichterEmail author
  • Johann Holdhaus
  • Lars Mehnen
  • Claudia Vidotto
  • Markus Loidl
  • Alan R. Barker
Original Paper

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.

Keywords

Environmental physiology Central fatigue Catecholamine Ergogenic 

Notes

Acknowledgments

The authors acknowledge the commitment of the participants in this study.

Conflict of interest

No conflicts of interest, financial or otherwise, are declared by the authors.

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Copyright information

© ISB 2013

Authors and Affiliations

  • Alfred Nimmerichter
    • 1
    • 2
    Email author
  • Johann Holdhaus
    • 1
  • Lars Mehnen
    • 3
  • Claudia Vidotto
    • 4
  • Markus Loidl
    • 1
  • Alan R. Barker
    • 5
  1. 1.Institute for Sports Medicine and Science, Olympic CenterIMSB AustriaMaria EnzersdorfAustria
  2. 2.Sport and Exercise SciencesUniversity of Applied SciencesWiener NeustadtAustria
  3. 3.Department of Biomedical Engineering, Technikum WienUniversity of Applied SciencesViennaAustria
  4. 4.BKW Laboratory MedicineViennaAustria
  5. 5.Sport and Health Sciences, College of Life and Environmental SciencesUniversity of ExeterExeterUK

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