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Meixner B, Nusser V, Koehler K, Sablain M, Boone J, Sperlich B. Reliability of power output, maximal rate of capillary blood lactate accumulation, and phosphagen contribution time following 15-s sprint cycling in amateur cyclists. Physiol Rep 2024; 12:e16086. [PMID: 38783143 PMCID: PMC11116165 DOI: 10.14814/phy2.16086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 05/03/2024] [Accepted: 05/10/2024] [Indexed: 05/25/2024] Open
Abstract
Based on Mader's mathematical model, the rate of capillary blood lactate concentration (νLamax) following intense exercise is thought to reflect the maximal glycolytic rate. We aimed to investigate the reliability of important variables of Mader's model (i.e. power output, lactate accumulation, predominant phosphagen contribution time frames (tP Cr)) and resulting νLamax values derived during and after a 15-s cycling sprint. Fifty cyclists performed a 15-s all-out sprint test on a Cyclus2 ergometer three times. The first sprint test was considered a familiarization trial. Capillary blood was sampled before and every minute (for 8 min) after the sprint to determine νLamax. Test-retest analysis between T2 and T3 revealed excellent reliability for power output (Pmean and Ppeak; ICC = 0.99, 0.99), ∆La and νLamax with tPCr of 3.5 s (ICC = 0.91, 0.91). νLamax calculated with tPCr = tP peak (ICC = 0.87) and tP Cr = tPpeak-3.5% (ICC = 0.79) revealed good reliability. tPpeak and tPpeak-3.5% revealed only poor and moderate reliability (ICC = 0.41, 0.52). Power output and ∆La are reliable parameters in the context of this test. Depending on tPCr, reliability of νLamax varies considerably with tP Cr of 3.5 s showing excellent reliability. We recommend standardization of this type of testing especially tP Cr.
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Affiliation(s)
- Benedikt Meixner
- Integrative and Experimental Exercise Science & TrainingJulius‐Maximilians‐Universität WürzburgWürzburgGermany
- Department of Sport Science and SportFriedrich‐Alexander‐Universität Erlangen‐NürnbergErlangenGermany
- Iq‐Move PG Lochmann & FraunbergerErlangenGermany
| | - Valentin Nusser
- TUM School of Medicine and Health, Department of Health and Sport ScienceTechnical University of MunichMunichGermany
| | - Karsten Koehler
- TUM School of Medicine and Health, Department of Health and Sport ScienceTechnical University of MunichMunichGermany
| | - Mattice Sablain
- Department of Movement and Sports SciencesGhent UniversityGhentBelgium
| | - Jan Boone
- Department of Movement and Sports SciencesGhent UniversityGhentBelgium
| | - Billy Sperlich
- Integrative and Experimental Exercise Science & TrainingJulius‐Maximilians‐Universität WürzburgWürzburgGermany
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Held S, Rappelt L, Brockherde J, Donath L. Reliability of the Maximal Lactate Accumulation Rate in Rowers. Int J Sports Med 2024; 45:238-244. [PMID: 38109898 PMCID: PMC10907110 DOI: 10.1055/a-2206-4959] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 10/12/2023] [Indexed: 12/20/2023]
Abstract
The maximal lactate accumulation rate (VLamax) has been linked to lactic anaerobic performance. Hence, accurate and reliable assessment is crucial in sport-specific performance testing. Thus, between-day reliability data of rowing-specific VLamax assessment was examined. Seventeen trained rowers (eight females and nine males; 19.5±5.2 yrs; 1.76±0.08 m; 70.2±8.9 kg; V̇O2max: 54±13 ml/min/kg) performed 20-s sprint tests on two separate days (one week apart) on a rowing ergometer. VLamax, peak lactate concentration, time to peak lactate, and mean rowing power were measured. Good to excellent intraclass correlation coefficients (ICCs), low standard error of measurement (SEM), and acceptable levels of agreement (LoAs; 90% confidence interval) for VLamax (ICC=0.85; SEM=0.02 mmol/L/s; LoA±0.09 mmol/L/s), peak lactate (ICC=0.88; SEM=0.3 mmol/L; LoA±1.4 mmol/l), time to peak lactate (ICC=0.92; SEM=0.1 min; LoA±0.5 min), and mean rowing power (ICC=0.98; SEM=3 W; LoA±39 W) were observed. In addition, VLamax was highly correlated (r=0.96; p≤0.001) to rowing power. Thus, VLamax and sprint performance parameters can be measured highly reliably using this sport-specific sprint test in rowing.
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Affiliation(s)
- Steffen Held
- Department of Sport and Management, IST University of Applied Sciences,
Düsseldorf, Germany
- Department of Training Intervention Research, German Sport University
Cologne, Cologne, Germany
| | - Ludwig Rappelt
- Department of Training Intervention Research, German Sport University
Cologne, Cologne, Germany
- Department of Movement and Training Science, University of Wuppertal,
Wuppertal, Germany
| | - Julia Brockherde
- Department of Training Intervention Research, German Sport University
Cologne, Cologne, Germany
| | - Lars Donath
- Department of Training Intervention Research, German Sport University
Cologne, Cologne, Germany
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Mavroudi M, Kabasakalis A, Petridou A, Mougios V. Blood Lactate and Maximal Lactate Accumulation Rate at Three Sprint Swimming Distances in Highly Trained and Elite Swimmers. Sports (Basel) 2023; 11:sports11040087. [PMID: 37104161 PMCID: PMC10146159 DOI: 10.3390/sports11040087] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/08/2023] [Accepted: 04/12/2023] [Indexed: 04/28/2023] Open
Abstract
We examined the blood lactate response, in terms of the maximal post-exercise concentration (Lamax), time to reach Lamax, and maximal lactate accumulation rate (VLamax), to swimming sprints of 25, 35, and 50 m. A total of 14 highly trained and elite swimmers (8 male and 6 female), aged 14-32, completed the 3 sprints in their specialization stroke with 30 min of passive rest in between. The blood lactate was measured right before and continually (every minute) after each sprint to detect the Lamax. The VLamax, a potential index of anaerobic lactic power, was calculated. The blood lactate concentration, swimming speed, and VLamax differed between the sprints (p < 0.001). The Lamax was highest after 50 m (13.8 ± 2.6 mmol·L-1, mean ± SD throughout), while the swimming speed and VLamax were highest at 25 m (2.16 ± 0.25 m·s-1 and 0.75 ± 0.18 mmol·L-1·s-1). The lactate peaked approximately 2 min after all the sprints. The VLamax in each sprint correlated positively with the speed and with each other. In conclusion, the correlation of the swimming speed with the VLamax suggests that the VLamax is an index of anaerobic lactic power and that it is possible to improve performance by augmenting the VLamax through appropriate training. To accurately measure the Lamax and, hence, the VLamax, we recommend starting blood sampling one minute after exercise.
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Affiliation(s)
- Maria Mavroudi
- Laboratory of Evaluation of Human Biological Performance, School of Physical Education and Sport Science at Thessaloniki, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - Athanasios Kabasakalis
- Laboratory of Evaluation of Human Biological Performance, School of Physical Education and Sport Science at Thessaloniki, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - Anatoli Petridou
- Laboratory of Evaluation of Human Biological Performance, School of Physical Education and Sport Science at Thessaloniki, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
| | - Vassilis Mougios
- Laboratory of Evaluation of Human Biological Performance, School of Physical Education and Sport Science at Thessaloniki, Aristotle University of Thessaloniki, 541 24 Thessaloniki, Greece
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Quittmann OJ, Lenatz B, Bartsch P, Lenatz F, Foitschik T, Abel T. Case Report: Training Monitoring and Performance Development of a Triathlete With Spinal Cord Injury and Chronic Myeloid Leukemia During a Paralympic Cycle. FRONTIERS IN REHABILITATION SCIENCES 2022; 3:867089. [PMID: 36188916 PMCID: PMC9487515 DOI: 10.3389/fresc.2022.867089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 05/20/2022] [Indexed: 11/16/2022]
Abstract
Introduction Paratriathlon allows competition for athletes with various physical impairments. The wheelchair category stands out from other paratriathlon categories, since competing in swimming, handcycling, and wheelchair racing entails substantial demands on the upper extremity. Therefore, knowledge about exercise testing and training is needed to improve performance and avoid overuse injuries. We described the training monitoring and performance development throughout a Paralympic cycle of an elite triathlete with spinal cord injury (SCI) and a recent diagnosis of chronic myeloid leukemia (CML). Case Presentation/Methods A 30-year-old wheelchair athlete with 10-years experience in wheelchair basketball contacted us for guidance regarding testing and training in paratriathlon. Laboratory and field tests were modified from protocols used for testing non-disabled athletes to examine their physical abilities. In handcycling, incremental tests were used to monitor performance development by means of lactate threshold (POBLA) and define heart rate-based training zones. All-out sprint tests were applied to calculate maximal lactate accumulation rate (V˙Lamax) as a measure of glycolytic capabilities in all disciplines. From 2017 to 2020, training was monitored to quantify training load (TL) and training intensity distribution (TID). Results From 2016 to 2019, the athlete was ranked within the top ten at the European and World Championships. From 2017 to 2019, annual TL increased from 414 to 604 h and demonstrated a shift in TID from 77-17-6% to 88-8-4%. In this period, POBLA increased from 101 to 158 W and V˙Lamax decreased from 0.56 to 0.36 mmol·l−1·s−1. TL was highest during training camps. In 2020, after he received his CML diagnosis, TL, TID, and POBLA were 317 h, 94-5-1%, and 108 W, respectively. Discussion TL and TID demonstrated similar values when compared with previous studies in para-swimming and long-distance paratriathlon, respectively. In contrast, relative TL during training camps exceeded those described in the literature and was accompanied by physical stress. Increased volumes at low intensity are assumed to increase POBLA and decrease V˙Lamax over time. CML treatment and side effects drastically decreased TL, intensity, and performance, which ultimately hindered a qualification for Tokyo 2020/21. In conclusion, there is a need for careful training prescription and monitoring in wheelchair triathletes to improve performance and avoid non-functional overreaching.
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Affiliation(s)
- Oliver J. Quittmann
- Department IV: Movement Rehabilitation, Neuromechanics and Paralympic Sport, Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany
- European Research Group in Disability Sport (ERGiDS), Bonn, Germany
- *Correspondence: Oliver J. Quittmann
| | - Benjamin Lenatz
- Department IV: Movement Rehabilitation, Neuromechanics and Paralympic Sport, Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany
| | | | - Frauke Lenatz
- Department IV: Movement Rehabilitation, Neuromechanics and Paralympic Sport, Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany
| | - Tina Foitschik
- Department IV: Movement Rehabilitation, Neuromechanics and Paralympic Sport, Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany
| | - Thomas Abel
- Department IV: Movement Rehabilitation, Neuromechanics and Paralympic Sport, Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany
- European Research Group in Disability Sport (ERGiDS), Bonn, Germany
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Szanto S, Mody T, Gyurcsik Z, Babjak LB, Somogyi V, Barath B, Varga A, Matrai AA, Nemeth N. Alterations of Selected Hemorheological and Metabolic Parameters Induced by Physical Activity in Untrained Men and Sportsmen. Metabolites 2021; 11:metabo11120870. [PMID: 34940627 PMCID: PMC8706578 DOI: 10.3390/metabo11120870] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Revised: 12/06/2021] [Accepted: 12/13/2021] [Indexed: 02/06/2023] Open
Abstract
Optimal tissue oxygen supply is essential for proper athletic performance and endurance. It also depends on perfusion, so on hemorheological properties and microcirculation. Regular exercise is beneficial to the rheological status, depending on its type, intensity, and duration. We aimed to investigate macro and microrheological changes due to short, high-intensity exercise in professional athletes (soccer and ice hockey players) and untrained individuals. The exercise was performed on a treadmill ergometer during a spiroergometry examination. Blood samples were taken before and after exercise to analyze lactate concentration, hematological parameters, blood and plasma viscosity, and red blood cell (RBC) deformability and aggregation. Leukocyte, RBC and platelet counts, and blood viscosity increased with exercise, by the largest magnitude in the untrained group. RBC deformability slightly impaired after exercise, but showed better values in ice hockey versus soccer players. RBC aggregation increased with exercise, dominantly in ice hockey players. Lactate increased mostly in soccer players, and the respiratory exchange rate was the lowest in ice hockey players. Overall, short, high-intensity exercise altered macro and microrheological parameters, mostly in the untrained group. Significant differences were found between the two sports. The data can be useful in training status monitoring, selection, and in revealing the causes of physical loading symptoms.
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Affiliation(s)
- Sandor Szanto
- Department of Sports Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei Park 12, H-4032 Debrecen, Hungary; (S.S.); (T.M.); (Z.G.)
| | - Tobias Mody
- Department of Sports Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei Park 12, H-4032 Debrecen, Hungary; (S.S.); (T.M.); (Z.G.)
- Doctoral School of Clinical Medicine, University of Debrecen, Nagyerdei krt. 98, H-4032 Debrecen, Hungary
| | - Zsuzsanna Gyurcsik
- Department of Sports Medicine, Faculty of Medicine, University of Debrecen, Nagyerdei Park 12, H-4032 Debrecen, Hungary; (S.S.); (T.M.); (Z.G.)
| | - Laszlo Balint Babjak
- Department of Operative Techniques and Surgical Research, Faculty of Medicine, University of Debrecen, Moricz Zsigmond u. 22, H-4002 Debrecen, Hungary; (L.B.B.); (V.S.); (B.B.); (A.V.); (A.A.M.)
| | - Viktoria Somogyi
- Department of Operative Techniques and Surgical Research, Faculty of Medicine, University of Debrecen, Moricz Zsigmond u. 22, H-4002 Debrecen, Hungary; (L.B.B.); (V.S.); (B.B.); (A.V.); (A.A.M.)
| | - Barbara Barath
- Department of Operative Techniques and Surgical Research, Faculty of Medicine, University of Debrecen, Moricz Zsigmond u. 22, H-4002 Debrecen, Hungary; (L.B.B.); (V.S.); (B.B.); (A.V.); (A.A.M.)
| | - Adam Varga
- Department of Operative Techniques and Surgical Research, Faculty of Medicine, University of Debrecen, Moricz Zsigmond u. 22, H-4002 Debrecen, Hungary; (L.B.B.); (V.S.); (B.B.); (A.V.); (A.A.M.)
| | - Adam Attila Matrai
- Department of Operative Techniques and Surgical Research, Faculty of Medicine, University of Debrecen, Moricz Zsigmond u. 22, H-4002 Debrecen, Hungary; (L.B.B.); (V.S.); (B.B.); (A.V.); (A.A.M.)
| | - Norbert Nemeth
- Department of Operative Techniques and Surgical Research, Faculty of Medicine, University of Debrecen, Moricz Zsigmond u. 22, H-4002 Debrecen, Hungary; (L.B.B.); (V.S.); (B.B.); (A.V.); (A.A.M.)
- Correspondence: ; Tel./Fax: +36-52-416-915
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Maximal Lactate Accumulation Rate in All-out Exercise Differs between Cycling and Running. Int J Sports Med 2020; 42:314-322. [PMID: 33137832 DOI: 10.1055/a-1273-7589] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
This study aims to compare maximal lactate accumulation rate (V̇ Lamax) and power output (Pmax) between cycling and running in terms of reliability, differences between, and correlations among modalities. Eighteen competitive triathletes performed a 15-s all-out exercise test in cycling and a 100-m sprint test in running. Each test was performed twice and separated by one week. Exercise tests in cycling were performed on an ergometer whereas sprint tests in running were performed on an indoor track. Differences between trials and exercise modality were analyzed using two-way ANOVA. V̇ Lamax (ICC=0.894, ICC=0.868) and Pmax (ICC=0.907, ICC=0.965) attained 'good' to 'excellent' reliability in both cycling and running, respectively. V̇ Lamax was higher in running (d=0.709, p=0.016) whereas Pmax was lower in running (d=-0.862, p < 0.001). For V̇ Lamax, limits of agreement between modalities ranged from -0.224 to +0.437 mmol·l-1·s-1. Pmax correlated between modalities (r=0.811, p < 0.001), whereas no correlation was found in V̇ Lamax (r=0.418, p=0.084). V̇ Lamax is highly reliable in both modalities and higher in running compared to cycling. Since V̇ Lamax does not correlate between cycling and running, it should be determined sport-specifically.
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Stephenson BT, Stone B, Mason BS, Goosey‐Tolfrey VL. Physiology of handcycling: A current sports perspective. Scand J Med Sci Sports 2020; 31:4-20. [DOI: 10.1111/sms.13835] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/28/2020] [Accepted: 09/15/2020] [Indexed: 12/29/2022]
Affiliation(s)
- Ben T. Stephenson
- Peter Harrison Centre for Disability Sport School of Sport, Exercise and Health Sciences Loughborough University Loughborough UK
- English Institute of Sport Performance Centre Loughborough University Loughborough UK
| | - Benjamin Stone
- Peter Harrison Centre for Disability Sport School of Sport, Exercise and Health Sciences Loughborough University Loughborough UK
| | - Barry S. Mason
- Peter Harrison Centre for Disability Sport School of Sport, Exercise and Health Sciences Loughborough University Loughborough UK
| | - Victoria L. Goosey‐Tolfrey
- Peter Harrison Centre for Disability Sport School of Sport, Exercise and Health Sciences Loughborough University Loughborough UK
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