Document Detail


Impact of low-intensity isocapnic hyperpnoea on blood lactate disappearance after exhaustive arm exercise.
MedLine Citation:
PMID:  17502332     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVE: To investigate the impact of low-intensity isocapnic hyperpnoea (IH) on blood lactate disappearance after exhaustive arm exercise in comparison with passive and active recovery using the previously loaded muscle group.
DESIGN: Randomised, crossover trial.
SETTING: Institute for Sports Medicine.
PARTICIPANTS: 18 healthy non-smoking and physically active male subjects.
INTERVENTIONS: Subjects performed three arm cranking tests to volitional exhaustion on 3 different days at least 48 h apart. Arm exercise was randomly followed by 30 min of passive recovery (PR), active arm cranking (AC) at 30% of peak power output or ventilatory recovery (VR) by means of IH at 30% of 12 s maximal voluntary ventilation. Blood lactate concentrations were measured every 2 min during recovery. Main outcome measurements: Blood lactate disappearance during the three different recovery strategies.
RESULTS: No significant differences in blood lactate concentrations were found between interventions PR, AC and VR during the whole measurement period. Mean (SD) peak lactate concentrations were 11.09 (1.98) mmol/l for PR, 11.13 (1.44) mmol/l for AC and 11.25 (1.93) mmol/l for VR. At the end of the recovery period measured lactate concentrations were 4.35 (1.56) mmol/l for PR, 3.77 (1.60) mmol/l for AC and 4.09 (1.35) mmol/l for VR. Moreover, all other variables measured were not significantly different, with the exception of higher average recovery heart rates during AC (116 (9) bpm) and VR (111 (17) bpm) compared with PR (93 (11) bpm).
CONCLUSION: Low-intensity IH seems not to enhance blood lactate disappearance after exhaustive arm exercise compared with passive or active recovery using the previously loaded muscle group. The magnitude of the involved muscle mass appears critical to effective active recovery.
Authors:
Claudio Perret; Gabi Mueller
Publication Detail:
Type:  Journal Article; Randomized Controlled Trial     Date:  2007-05-14
Journal Detail:
Title:  British journal of sports medicine     Volume:  41     ISSN:  1473-0480     ISO Abbreviation:  Br J Sports Med     Publication Date:  2007 Sep 
Date Detail:
Created Date:  2007-08-29     Completed Date:  2007-09-28     Revised Date:  2013-06-06    
Medline Journal Info:
Nlm Unique ID:  0432520     Medline TA:  Br J Sports Med     Country:  England    
Other Details:
Languages:  eng     Pagination:  588-91; discussion 591     Citation Subset:  IM    
Affiliation:
Swiss Paraplegic Research, Nottwil, Switzerland. claudio.perret@paranet.ch
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MeSH Terms
Descriptor/Qualifier:
Adult
Arm*
Carbon Dioxide / blood,  metabolism*
Cross-Over Studies
Exercise / physiology*
Heart Rate / physiology
Humans
Lactic Acid / blood*
Male
Oxygen / blood
Oxygen Consumption / physiology
Physical Exertion / physiology*
Regional Blood Flow / physiology
Respiratory Function Tests
Respiratory Muscles / physiology
Chemical
Reg. No./Substance:
124-38-9/Carbon Dioxide; 50-21-5/Lactic Acid; 7782-44-7/Oxygen
Comments/Corrections

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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