Effects of negative air ions on oxygen uptake kinetics, recovery and performance in exercise: a randomized, double-blinded study
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; V · O 2 max : 57 ± 7 mL mi...
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| Published in: | International journal of biometeorology Vol. 58; no. 7; pp. 1503 - 1512 |
|---|---|
| Main Authors: | , , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Berlin/Heidelberg
Springer Berlin Heidelberg
01-09-2014
Springer Nature B.V |
| Subjects: | |
| Online Access: | Get full text |
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| Summary: | 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;
V
·
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 × 10
3
ions cm
−3
) or normal room conditions (PLA: 0.1 ± 0.06 × 10
3
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
V
·
O
2
response (
τ
) and the magnitude of the
V
·
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] (B
Lac
) over 20 min during recovery in the ionization chamber. There was no difference between ION and PLA for the phase II
V
·
O
2
τ
(32 ± 14 s vs. 32 ± 14 s;
P
= 0.7) or
V
·
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 B
Lac
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. |
|---|---|
| Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-News-1 ObjectType-Feature-3 content type line 23 ObjectType-Article-1 ObjectType-Feature-2 |
| ISSN: | 0020-7128 1432-1254 |
| DOI: | 10.1007/s00484-013-0754-8 |