NDLI: Differences in lactate exchange and removal abilities between high-level African and Caucasian 400-m track runners

Content Provider	Springer Nature Link
Author	Bret, Carine Lacour, Jean René Bourdin, Muriel Locatelli, Elio Angelis, Marco Faina, Marcello Rahmani, Abderrehmane Messonnier, Laurent
Copyright Year	2012
Abstract	The present study aimed to investigate (1) whether high-level 400-m track runners of different ethnic origin displayed divergent post-run blood lactate concentrations (p400m[La]) and (2) if this discrepancy was based on differences in lactate exchange and removal abilities. Twenty male African (n = 12) and Caucasian (n = 8) runners, paired in terms of personal record, performed (1) an all-out 400-m run to measure p400m[La] at 3, 5 and 7 min into recovery and (2) a 1-min 25.2 km h−1 running (not maximal but standardized) exercise followed by 90-min passive recovery to determine individual blood lactate recovery curves (IBLRC). IBLRCs were fitted to a bi-exponential time function: $$ {\text{La(}}t )= {\text{La(}}0 )+ {{\text{A}}_1}( 1-{{\text{e}}^{ - {\gamma_ 1}t}}) + {{\text{A}}_ 2}( 1-{{\text{e}}^{ - {\gamma_ 2}t}}) $$ where γ 1 and γ 2 denote lactate exchange ability between the previously worked muscles and blood, and overall ability for lactate removal, respectively. The quantity of lactate accumulated at the end of the 1-min exercise (Q LaA) was also estimated. Our study showed that after the all-out 400-m run, p400m[La] was lower in African than in Caucasian runners at 3 and 5 min but not at 7 min into recovery. After the standardized exercise, γ 1 and γ 2 were lower (p < 0.01) and Q LaA was higher (p < 0.05) in African than in Caucasian runners. These data suggest that for similar performance levels, ethnicity involves differences in lactate accumulation, exchange and removal.
Starting Page	1489
Ending Page	1498
Page Count	10
File Format	PDF
ISSN	14396319
Journal	European Journal of Applied Physiology
Volume Number	113
Issue Number	6
e-ISSN	14396327
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-12-27
Publisher Place	Berlin/Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Supramaximal exercise Ethnicity Sprint Bicompartmental model Human Physiology Occupational Medicine/Industrial Medicine Sports Medicine
Content Type	Text
Resource Type	Article
Subject	Orthopedics and Sports Medicine Physiology (medical) Public Health, Environmental and Occupational Health Sports Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Metabolic and respiratory adaptations during intense exercise following long-sprint training of short duration

Strength training improves supramaximal cycling but not anaerobic capacity

The effect of different first 200-m pacing strategies on blood lactate and biomechanical parameters of the 400-m sprint

Blood lactate exchange and removal abilities after relative high-intensity exercise: effects of training in normoxia and hypoxia

Role of muscle mass on sprint performance: gender differences?

Effect of training and detraining on catecholamine responses to sprint exercise in adolescent girls

Performance and metabolism in repeated sprint exercise: effect of recovery intensity

Adaptation of left ventricular morphology to long−term training in sprint− and endurance−trained elite runners

Effects of low and high levels of moderate hypoxia on anaerobic energy release during supramaximal cycle exercise

Differences in lactate exchange and removal abilities between high-level African and Caucasian 400-m track runners

Similar Documents

Metabolic and respiratory adaptations during intense exercise following long-sprint training of short duration

Strength training improves supramaximal cycling but not anaerobic capacity

The effect of different first 200-m pacing strategies on blood lactate and biomechanical parameters of the 400-m sprint

Blood lactate exchange and removal abilities after relative high-intensity exercise: effects of training in normoxia and hypoxia

Role of muscle mass on sprint performance: gender differences?

Effect of training and detraining on catecholamine responses to sprint exercise in adolescent girls

Performance and metabolism in repeated sprint exercise: effect of recovery intensity

Adaptation of left ventricular morphology to long−term training in sprint− and endurance−trained elite runners

Effects of low and high levels of moderate hypoxia on anaerobic energy release during supramaximal cycle exercise

Differences in lactate exchange and removal abilities between high-level African and Caucasian 400-m track runners