Aggravation of pulmonary diffusing capacity in highly trained athletes by 6 weeks of low-volume, low-intensity training.
Int J Sports Physiol Perform
; 8(6): 648-62, 2013 Nov.
Article
in En
| MEDLINE
| ID: mdl-23538395
ABSTRACT
PURPOSE:
Postexercise alveolar-capillary membrane-diffusing capacity (DLco) often decreases in highly trained endurance athletes and seems linked to their training status. To test the hypothesis that training status influences postexercise DLco, 13 male and 2 female triathletes (20.2 ± 4.4 y old, 175.2 ± 6.7 cm tall; weight in a range of 66.6 ± 7.4 kg to 67.4 ± 7.8 kg during the 1-y study) were randomized into experimental (n = 7) and control (n = 8) groups and performed VO(2max) cycle tests and simulated cycle-run successions (CR) of 30 min + 20 min after 3 periods in the competitive season.METHODS:
Both groups were tested before (pre- HTP) and after a 30-wk high-training period (HTP) with high training volume, intensity, and frequency. The experimental group was then also tested after a 6-wk low-training period (LTP) with low training volume, intensity, and frequency, while the control group continued training according to the HTP schedule for these 6 wk. Ventilatory data were collected continuously. DLco testing was performed before and 30, 60, and 120 min after the CR trials.RESULTS:
Whatever the period or group, DLco was significantly decreased 30 min after CR, with a significantly greater decrease in the experimental group than the control group in LTP (-15.7% and -9.3% of DLco, respectively).CONCLUSIONS:
Six weeks of low training volume and intensity were sufficient to reverse the effects of high training volume and intensity on the alveolar-capillary membrane after a CR succession in competitive triathletes.
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Collection:
01-internacional
Database:
MEDLINE
Main subject:
Pulmonary Diffusing Capacity
/
Athletes
/
Physical Conditioning, Human
Type of study:
Clinical_trials
Limits:
Adult
/
Female
/
Humans
/
Male
Language:
En
Journal:
Int J Sports Physiol Perform
Journal subject:
FISIOLOGIA
/
MEDICINA ESPORTIVA
Year:
2013
Document type:
Article
Affiliation country:
Francia