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Mohammadalizadeh M, Jaiswal S, Semken S, Mikkola A. Kinematic and Physiological Analysis of Medieval Combat Sport Using Motion Analysis, Blood Lactate Measurement, and Heart Rate Monitoring: A Case Study. SENSORS (BASEL, SWITZERLAND) 2024; 24:3443. [PMID: 38894234 PMCID: PMC11174425 DOI: 10.3390/s24113443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 05/15/2024] [Accepted: 05/23/2024] [Indexed: 06/21/2024]
Abstract
Medieval combat sport is a form of mixed martial art in which combatants engage in fighting using offensive and defensive equipment while dressed in full armor. The sport is considered extremely taxing, making it nearly impossible to maintain the same level of performance. However, this form of sport has not been thoroughly analyzed, and its impact on human physical response is largely unknown. To address this gap, the study reported here aimed to introduce and test a procedure for analyzing human physical responses within the framework of the sport. To accomplish this, two experienced combatants were asked to engage in a series of strikes, performed in the form of a set duel simulating a professional fight competition. The kinematic aspect of the procedure was examined using motion analysis with the help of an IMU suit, while the physiological aspect was evaluated based on blood lactate levels and heart rate measurements. Furthermore, an ergometer test conducted in a laboratory setting aimed to determine the lactate threshold. The duel results showed noticeable decreases in the kinematic aspects of the strikes, such as the velocity of impact, and a dramatic rise in physiological aspects, such as heart rate and blood lactate levels. During the duel sets, the blood lactate surpassed the threshold level, and at the end, the heart rate exceeded the maximum age-related level. Practicing medieval combat sport has been shown to impose an extreme physical load on the bodies of combatants, noticeably affecting their performance levels.
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Affiliation(s)
- Mojtaba Mohammadalizadeh
- Laboratory of Machine Design, Department of Mechanical Engineering, LUT University, 53850 Lappeenranta, Finland; (S.J.); (S.S.); (A.M.)
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Thron M, Woll A, Doller L, Quittmann OJ, Härtel S, Ruf L, Altmann S. Physiological and Locomotor Profiling Enables to Differentiate Between Sprinters, 400-m Runners, and Middle-Distance Runners. J Strength Cond Res 2024:00124278-990000000-00449. [PMID: 38787757 DOI: 10.1519/jsc.0000000000004801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2024]
Abstract
ABSTRACT Thron, M, Woll, A, Doller, L, Quittmann, OJ, Härtel, S, Ruf, L, and Altmann, S. Physiological and locomotor profiling enables to differentiate between sprinters, 400-m runners, and middle-distance runners. J Strength Cond Res XX(X): 000-000, 2024-Different approaches exist for characterizing athletes, e.g., physiological and locomotor profiling. The aims of this study were to generate and compare physiological and locomotor profiles of male and female runners and to evaluate relationships between the different approaches. Thirty-four highly trained adolescent and young adult female and male athletes (n = 11 sprinters; n = 11,400-m runners; n = 12 middle-distance runners) performed two 100-m sprints on a running track to determine maximal sprinting speed (MSS) and maximal lactate accumulation rate (ċLamax). A cardiopulmonary exercise test was performed on a treadmill to determine maximal aerobic speed (MAS) and maximal oxygen uptake (V̇o2max). Anaerobic speed reserve (ASR) was calculated as the difference between MSS and MAS. Group comparisons were conducted with a 2-way ANOVA (discipline × sex; p < 0.05) and Bonferroni post hoc tests and Cohen's d as effect size. Parameters were correlated by Pearson's correlation coefficients. Maximal aerobic speed and V̇o2max were higher in 400-m and middle-distance runners compared with sprinters (p ≤ 0.02; -2.24 ≤ d ≤ -1.29). Maximal sprinting speed and ċLamax were higher in sprinters and 400-m runners compared with middle-distance runners (0.03 ≤ p ≤ 0.28; 0.73 ≤ d ≤ 1.23). Anaerobic speed reserve was highest in sprinters and lowest in middle-distance runners (p ≤ 0.03; 1.24 ≤ d ≤ 2.79). High correlations were found between ASR and MAS, MSS, and ċLamax (p < 0.01; -0.55 ≤ r ≤ 0.91) and between ċLamax and MSS (p < 0.01; r = 0.74). Our results indicate that athletes of different sprinting and running disciplines show differing physiological and locomotor profiles, and that the parameters of these approaches are related to each other. This can be of interest for assessing strengths and weaknesses (e.g., for talent identification) or training prescription in these disciplines.
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Affiliation(s)
- Maximiliane Thron
- Institute of Sports and Sports Science, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Alexander Woll
- Institute of Sports and Sports Science, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Lukas Doller
- Institute of Sports and Sports Science, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Oliver Jan Quittmann
- Institute of Movement and Neurosciences, German Sport University Cologne, Cologne, Germany
| | | | - Ludwig Ruf
- TSG ResearchLab gGmbH, Zuzenhausen, Germany
| | - Stefan Altmann
- Institute of Sports and Sports Science, Karlsruhe Institute of Technology, Karlsruhe, Germany
- TSG ResearchLab gGmbH, Zuzenhausen, Germany
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Watanabe T, Inaba T, van Rassel CR, MacInnis MJ, Kakinoki K, Hatta H. Identifying physiological determinants of 800 m running performance using post-exercise blood lactate kinetics. Eur J Appl Physiol 2024:10.1007/s00421-024-05504-4. [PMID: 38761193 DOI: 10.1007/s00421-024-05504-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 05/08/2024] [Indexed: 05/20/2024]
Abstract
PURPOSE The aims of the present study were to investigate blood lactate kinetics following high intensity exercise and identify the physiological determinants of 800 m running performance. METHODS Fourteen competitive 800 m runners performed two running tests. First, participants performed a multistage graded exercise test to determine physiological indicators related to endurance performance. Second, participants performed four to six 30-s high intensity running bouts to determine post-exercise blood lactate kinetics. Using a biexponential time function, lactate exchange ability (γ1), lactate removal ability (γ2), and the quantity of lactate accumulated (QLaA) were calculated from individual blood lactate recovery data. RESULTS 800 m running performance was significantly correlated with peak oxygen consumption (r = -0.794), γ1 and γ2 at 800 m race pace (r = -0.604 and -0.845, respectively), and QLaA at maximal running speed (r = -0.657). V ˙ O2peak and γ2 at 800 m race pace explained 83% of the variance in 800 m running performance. CONCLUSION Our results indicate that (1) a high capacity to exchange and remove lactate, (2) a high capacity for short-term lactate accumulation and, (3) peak oxygen consumption, are critical elements of 800 m running performance. Accordingly, while lactate has primarily been utilized as a performance indicator for long-distance running, post-exercise lactate kinetics may also prove valuable as a performance determinant in middle-distance running.
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Affiliation(s)
- Takuya Watanabe
- Department of Sports Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo, 153-8902, Japan
- Faculty of Kinesiology, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Takeru Inaba
- Department of Sports Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo, 153-8902, Japan
| | - Cody R van Rassel
- Faculty of Kinesiology, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | - Martin J MacInnis
- Faculty of Kinesiology, University of Calgary, Calgary, AB, T2N 1N4, Canada
| | | | - Hideo Hatta
- Department of Sports Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo, 153-8902, Japan.
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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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Zhang Y, Diao P, Wang J, Li S, Fan Q, Han Y, Liang Y, Wang Z, Del Coso J. The Effect of Post-Activation Potentiation Enhancement Alone or in Combination with Caffeine on Anaerobic Performance in Boxers: A Double-Blind, Randomized Crossover Study. Nutrients 2024; 16:235. [PMID: 38257128 PMCID: PMC10820078 DOI: 10.3390/nu16020235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/08/2024] [Accepted: 01/10/2024] [Indexed: 01/24/2024] Open
Abstract
Post-activation performance enhancement (PAPE) is a physiological phenomenon that refers to an acute excitation of the neuromuscular system following intense exercise that ends in enhanced physical performance in a subsequent bout of exercise. The scientific literature has primarily examined the effectiveness of PAPE alone or combined with caffeine (CAF) intake in all-out tests lasting ≤10 s, as the effect of PAPE is transitory. The aim of the present study was to determine the effect of a protocol to induce PAPE alone or in combination with caffeine intake on the 30 s Wingate Anaerobic Test in highly trained boxers. Twenty-five male and highly trained boxers (mean age: 20 ± 1 years) participated in a double-blind, randomized crossover study consisting of three different experimental conditions: (i) control (CON), with no substance intake and no PAPE protocol before the Wingate Anaerobic Test; (ii) PAPE + PLA, involving the intake of a placebo 60 min before and a PAPE protocol comprising a 10 s cycling sprint overloaded with 8.5% of the participants' body weight 10 min before the Wingate Anaerobic Test; and (iii) PAPE + CAF, involving the intake of 3 mg/kg of caffeine 60 min before and the same PAPE protocol used in the (ii) protocol before the Wingate Anaerobic Test. In all conditions, the participants performed the 30 s version of the Wingate Anaerobic Test with a load equivalent to 7.5% of their body weight, while the cycle ergometer setting was replicated. Immediately following the Wingate test, heart rate (HR), the rating of perceived exertion (RPE), and blood lactate concentration (Bla) were measured. In comparison to CON, PAPE + PLA enhanced mean power (p = 0.024; Effect size [ES] = 0.37) and total work (p = 0.022; ES = 0.38) during the Wingate test, accompanied by an increase in post-test blood lactate concentration (p < 0.01; ES = 0.83). In comparison to CON, PAPE + CAF enhanced mean power (p = 0.001; ES = 0.57), peak power (p = 0.013; ES = 0.57), total work (p = 0.001; ES = 0.53), post-test blood lactate concentration (p < 0.001; ES = 1.43) and participants' subjective perception of power (p = 0.041). There were no differences in any variable between PAPE + PLA and PAPE + CAF. In summary, a PAPE protocol that involves a 10 s all-out sprint 10 min before the Wingate Anaerobic Test was effective in enhancing Wingate mean power in highly trained boxers. The addition of 3 mg/kg of caffeine to the PAPE protocol produced an effect on mean power of a higher magnitude than PAPE alone, and it enhanced peak power along with participants' subjective perception of power. From a practical point of view, PAPE before exercise seems to be an effective approach for increasing Wingate performance in highly trained boxers, while the addition of caffeine can increase some benefits, especially peak power.
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Affiliation(s)
- Yinkai Zhang
- China Wushu School, Beijing Sport University, Beijing 100084, China
| | - Penglin Diao
- China Swimming College, Beijing Sport University, Beijing 100084, China
| | - Jie Wang
- Sports Coaching College, Beijing Sport University, Beijing 100084, China
| | - Shiying Li
- Wushu Instructor Training Base for International Promotion of Chinese Language, Beijing Sport University, Beijing 100084, China
| | - Qingmin Fan
- Sports Coaching College, Beijing Sport University, Beijing 100084, China
| | - Yunzhi Han
- School of Humanities, Beijing Sport University, Beijing 100084, China
| | - Yapu Liang
- School of Strength and Conditioning Training, Beijing Sport University, Beijing 100084, China
| | - Ziyu Wang
- China Swimming College, Beijing Sport University, Beijing 100084, China
| | - Juan Del Coso
- Sport Sciences Research Centre, Rey Juan Carlos University, 28943 Fuenlabrada, Spain;
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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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Yang WH, Park SY, Kim T, Jeon HJ, Heine O, Gehlert S. A modified formula using energy system contributions to calculate pure maximal rate of lactate accumulation during a maximal sprint cycling test. Front Physiol 2023; 14:1147321. [PMID: 37123252 PMCID: PMC10133696 DOI: 10.3389/fphys.2023.1147321] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 03/27/2023] [Indexed: 05/02/2023] Open
Abstract
Purpose: This study aimed at comparing previous calculating formulas of maximal lactate accumulation rate ( ν La.max) and a modified formula of pure ν La.max (P ν La.max) during a 15-s all-out sprint cycling test (ASCT) to analyze their relationships. Methods: Thirty male national-level track cyclists participated in this study (n = 30) and performed a 15-s ASCT. The anaerobic power output (Wpeak and Wmean), oxygen uptake, and blood lactate concentrations (La-) were measured. These parameters were used for different calculations of ν La.max and three energy contributions (phosphagen, W PCr; glycolytic, W Gly; and oxidative, W Oxi). The P ν La.max calculation considered delta La-, time until Wpeak (tPCr-peak), and the time contributed by the oxidative system (tOxi). Other ν La.max levels without tOxi were calculated using decreasing time by 3.5% from Wpeak (tPCr -3.5%) and tPCr-peak. Results: The absolute and relative W PCr were higher than W Gly and W Oxi (p < 0.0001, respectively), and the absolute and relative W Gly were significantly higher than W Oxi (p < 0.0001, respectively); ν La.max (tPCr -3.5%) was significantly higher than P ν La.max and ν La.max (tPCr-peak), while ν La.max (tPCr-peak) was lower than P ν La.max (p < 0.0001, respectively). P ν La.max and ν La.max (tPCr-peak) were highly correlated (r = 0.99; R 2 = 0.98). This correlation was higher than the relationship between P ν La.max and ν La.max (tPCr -3.5%) (r = 0.87; R 2 = 0.77). ν La.max (tPCr-peak), P ν La.max, and ν La.max (tPCr -3.5%) were found to correlate with absolute Wmean and W Gly. Conclusion: P ν La.max as a modified calculation of ν La.max provides more detailed insights into the inter-individual differences in energy and glycolytic metabolism than ν La.max (tPCr-peak) and ν La.max (tPCr -3.5%). Because W Oxi and W PCr can differ remarkably between athletes, implementing their values in P ν La.max can establish more optimized individual profiling for elite track cyclists.
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Affiliation(s)
- Woo-Hwi Yang
- Graduate School of Sports Medicine, CHA University, Pocheon-si, Gyeonggi-do, Republic of Korea
- Department of Medicine, General Graduate School, CHA University, Pocheon-si, Gyeonggi-do, Republic of Korea
| | - So-Young Park
- Graduate School of Sports Medicine, CHA University, Pocheon-si, Gyeonggi-do, Republic of Korea
| | - Taenam Kim
- Graduate School of Sports Medicine, CHA University, Pocheon-si, Gyeonggi-do, Republic of Korea
| | - Hyung-Jin Jeon
- Department of Medicine, General Graduate School, CHA University, Pocheon-si, Gyeonggi-do, Republic of Korea
| | | | - Sebastian Gehlert
- Department for Biosciences of Sports, Institute of Sports Science, University of Hildesheim, Hildesheim, Germany
- Institute of Cardiovascular Research and Sports Medicine, German Sport University Cologne, Cologne, Germany
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Quittmann OJ, Foitschik T, Vafa R, Freitag FJ, Sparmann N, Nolte S, Abel T. Is Maximal Lactate Accumulation Rate Promising for Improving 5000-m
Prediction in Running? Int J Sports Med 2022; 44:268-279. [PMID: 36529130 PMCID: PMC10072929 DOI: 10.1055/a-1958-3876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
AbstractEndurance running performance can be predicted by maximal oxygen uptake
(V̇O2max), the fractional utilisation of oxygen uptake
(%V̇O2max) and running economy at lactate
threshold (REOBLA). This study aims to assess maximal lactate
accumulation rate (ċLamax) in terms of improving running
performance prediction in trained athletes. Forty-four competitive female and
male runners/triathletes performed an incremental step test, a 100-m
sprint test and a ramp test to determine their metabolic profile. Stepwise
linear regression was used to predict 5000-m time trial performance. Split times
were recorded every 200-m to examine the ‘finishing kick’.
Females had a slower t5k and a lower V̇O2max,
ċLamax, ‘finishing kick’ and
REOBLA. Augmenting Joyner’s model by means of
ċLamax explained an additional 4.4% of variance
in performance. When performing the same analysis exclusively for males,
ċLamax was not included. ċLamax
significantly correlated with %V̇O2max
(r=-0.439, p=0.003) and the ‘finishing kick’
(r=0.389, p=0.010). ċLamax allows for
significant (yet minor) improvements in 5000-m performance prediction in a
mixed-sex group. This margin of improvement might differ in middle-distance
events. Due to the relationship to the ‘finishing kick’,
ċLamax might be related to individual pacing strategies,
which should be assessed in future research.
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Affiliation(s)
- Oliver Jan Quittmann
- Institute of Movement and Neurosciences, German Sport University
Cologne, Cologne, Germany
- European Research Group in Disability Sport (ERGiDS)
| | - Tina Foitschik
- Institute of Movement and Neurosciences, German Sport University
Cologne, Cologne, Germany
| | - Ramin Vafa
- Institute of Movement and Neurosciences, German Sport University
Cologne, Cologne, Germany
| | - Finn Jannis Freitag
- Institute of Movement and Neurosciences, German Sport University
Cologne, Cologne, Germany
| | - Nordin Sparmann
- Institute of Movement and Neurosciences, German Sport University
Cologne, Cologne, Germany
| | - Simon Nolte
- Institute of Movement and Neurosciences, German Sport University
Cologne, Cologne, Germany
| | - Thomas Abel
- Institute of Movement and Neurosciences, German Sport University
Cologne, Cologne, Germany
- European Research Group in Disability Sport (ERGiDS)
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Szurko A, Kasprzyk-Kucewicz T, Cholewka A, Kazior M, Sieroń K, Stanek A, Morawiec T. Thermovision as a Tool for Athletes to Verify the Symmetry of Work of Individual Muscle Segments. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph19148490. [PMID: 35886342 PMCID: PMC9324238 DOI: 10.3390/ijerph19148490] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/04/2022] [Accepted: 07/08/2022] [Indexed: 12/31/2022]
Abstract
In the presented research, we characterised the temperature profiles and the degree of preparation for exercise of individual muscle groups of athletes We hypothesise that by means of thermal imaging studies, the effectiveness of the warm-up can be monitored to determine whether the effort of individual muscles is equal and symmetrical, which can help to avoid a potential injury. In the study, thermographic imaging was performed on a group of athletes exercising on a rowing ergometer involving almost 80% of the muscle parts of the human body for intense and symmetrical exercise. Thermovision studies have confirmed, based on the increased temperature of the muscle areas, that the rowing ergometer involves many muscle groups in training. Moreover, based on the shape of the temperature function obtained from individual body regions of interest, it was shown that conventional exercise on a rowing ergometer causes almost symmetrical work of the right and left sides of the body. Obtained temperature changes in most of the studied muscle areas showed minimum temperature reached the beginning of training—mostly phases 1 and 2. During the subsequent phases, the temperature increase was monitored, stopping at resting temperature. Significantly, temperature variations did not exceed 0.5 °C in all post-training phases. Statistical analyses did not show any significant differences in the symmetry of right and left muscle areas corresponding to the muscle location temperature. Thermal imaging may be an innovative wholly non-invasive and safe method, because checking induces adaptation processes, which may become indicators of an athlete’s efficiency. The imaging can be continuously repeated, and automatic comparison of average temperature or temperature difference may provide some clues that protect athletes from overtraining or serious injuries.
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Affiliation(s)
- Agnieszka Szurko
- Faculty of Science and Technology, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland; (T.K.-K.); (A.C.); (M.K.)
- Correspondence: ; Tel.: +32-349-75-86
| | - Teresa Kasprzyk-Kucewicz
- Faculty of Science and Technology, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland; (T.K.-K.); (A.C.); (M.K.)
| | - Armand Cholewka
- Faculty of Science and Technology, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland; (T.K.-K.); (A.C.); (M.K.)
| | - Maksymilian Kazior
- Faculty of Science and Technology, University of Silesia, 75 Pułku Piechoty 1A, 41-500 Chorzów, Poland; (T.K.-K.); (A.C.); (M.K.)
| | - Karolina Sieroń
- Department of Internal Diseases, Oncology, with Department of Gastroenterology, Cardiology, and Angiology, Hospital MSWiA in Katowice, 40-752 Katowice, Poland;
| | - Agata Stanek
- Department and Clinic of Internal Medicine, Angiology and Physical Medicine, Faculty of Medical Sciences in Zabrze, Medical University of Silesia, Batorego 15, 41-902 Bytom, Poland;
| | - Tadeusz Morawiec
- Division of Medicine and Dentistry, Department of Oral Surgery, Medical University of Silesia, Pl. Akademicki 17, 41-902 Bytom, Poland;
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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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Ji S, Sommer A, Bloch W, Wahl P. Comparison and Performance Validation of Calculated and Established Anaerobic Lactate Thresholds in Running. ACTA ACUST UNITED AC 2021; 57:medicina57101117. [PMID: 34684154 PMCID: PMC8541599 DOI: 10.3390/medicina57101117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/04/2021] [Accepted: 10/12/2021] [Indexed: 11/25/2022]
Abstract
Background and Objectives: This study aimed to compare the calculated running velocity at the anaerobic lactate threshold (cLTAn), determined by a mathematical model for metabolic simulation, with two established threshold concepts (onset of blood lactate accumulation (OBLA; 4 mmol∙L−1) and modified maximal deviation method (mDmax)). Additionally, all threshold concepts were correlated with performance in different endurance running events. Materials and Methods: Ten sub-elite runners performed a 30 s sprint test on a cycle ergometer adjusted to an isokinetic mode set to a cadence of 120 rpm to determine maximal lactate production rate (VLamax), and a graded exercise test on a treadmill to determine maximal oxygen uptake (VO2max). Running velocities at OBLA, mDmax, and cLTAn were then compared with each other, and further correlated with running performance over various distances (3000 m, 5000 m, and 10,000 m). Results: The mean difference in cLTAn was −0.13 ± 0.43 m∙s−1 and −0.32 ± 0.39 m∙s−1 compared to mDmax (p = 0.49) and OBLA (p < 0.01), respectively. cLTAn indicated moderate to good concordance with the established threshold concepts (mDmax: ICC = 0.87, OBLA: ICC = 0.74). In comparison with other threshold concepts, cLTAn exhibited comparable correlations with the assessed running performances (cLTAn: r = 0.61–0.76, mDmax: r = 0.69–0.79, OBLA: r = 0.56–0.69). Conclusion: Our data show that cLTAn can be applied for determining endurance performance during running. Due to the consideration of individual physiological profiles, cLTAn offers a physiologically justified approach to assess an athlete’s endurance performance.
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Affiliation(s)
- Sanghyeon Ji
- The German Research Centre of Elite Sport, German Sport University Cologne, 50933 Cologne, Germany; (S.J.); (A.S.); (W.B.)
- Department of Sports Medicine and Exercise Physiology, Institute of Sport Sciences, Goethe University Frankfurt, 60487 Frankfurt, Germany
| | - Aldo Sommer
- The German Research Centre of Elite Sport, German Sport University Cologne, 50933 Cologne, Germany; (S.J.); (A.S.); (W.B.)
- Department of Molecular and Cellular Sport Medicine, Institute of Cardiology and Sports Medicine, German Sport University Cologne, 50933 Cologne, Germany
| | - Wilhelm Bloch
- The German Research Centre of Elite Sport, German Sport University Cologne, 50933 Cologne, Germany; (S.J.); (A.S.); (W.B.)
- Department of Molecular and Cellular Sport Medicine, Institute of Cardiology and Sports Medicine, German Sport University Cologne, 50933 Cologne, Germany
| | - Patrick Wahl
- Institute of Interdisciplinary Exercise Science and Sports Medicine, Medical School Hamburg, 20457 Hamburg, Germany
- Correspondence: ; Tel.: +49-40-361-226-43209
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High-Intensity Warm-Up Increases Anaerobic Energy Contribution during 100-m Sprint. BIOLOGY 2021; 10:biology10030198. [PMID: 33807665 PMCID: PMC7998547 DOI: 10.3390/biology10030198] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 02/26/2021] [Accepted: 03/02/2021] [Indexed: 12/25/2022]
Abstract
Simple Summary Certain exercise performances or movements cause sudden changes (or increases) in metabolic response. Track and field running events that require explosive energy in the shortest time, such as a 100-m sprint, need an immediate energy supply. Referring to the relevant studies to date, metabolic responses to submaximal exercise have been well documented, while information on the metabolic responses of short-term sprint performance is relatively insufficient. In this regard, based on the evidence that the human body relies on anaerobic energy metabolism during intense, short-term exercise, we investigated anaerobic energy contributions following the acute effect of a high-intensity warm-up during a 100 m-sprint. The main finding of our study revealed that a high-intensity warm-up (HIW) increases the contribution of the anaerobic system, probably by activating key regulatory enzymes related to anaerobic energy metabolism, compared to a low-intensity warm-up, for a 100-m sprint. Therefore, an HIW is effective in increasing anaerobic energy contribution during a 100-m sprint, which can be a useful strategy for coaches and athletes in the field. Abstract This study aimed to evaluate the effects of warm-up intensity on energetic contribution and performance during a 100-m sprint. Ten young male sprinters performed 100-m sprints following both a high-intensity warm-up (HIW) and a low-intensity warm-up (LIW). Both the HIW and LIW were included in common baseline warm-ups and interventional warm-ups (eight 60-m runs, HIW; 60 to 95%, LIW; 40% alone). Blood lactate concentration [La−], time trial, and oxygen uptake (VO2) were measured. The different energy system contribution was calculated by using physiological variables. [La−1]Max following HIW was significantly higher than in LIW (11.86 ± 2.52 vs. 9.24 ± 1.61 mmol·L−1; p < 0.01, respectively). The 100-m sprint time trial was not significantly different between HIW and LIW (11.83 ± 0.57 vs. 12.10 ± 0.63 s; p > 0.05, respectively). The relative (%) phosphagen system contribution was higher in the HIW compared to the LIW (70 vs. 61%; p < 0.01, respectively). These results indicate that an HIW increases phosphagen and glycolytic system contributions as compared to an LIW for the 100-m sprint. Furthermore, an HIW prior to short-term intense exercise has no effect on a 100-m sprint time trial; however, it tends to improve times (decreased 100-m time trial; −0.27 s in HIW vs. LIW).
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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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Zwingmann L, Hoppstock M, Wahl P. Power profile, physiological characteristics and their correlation in elite canoe polo players. J Sports Med Phys Fitness 2020; 60:1194-1201. [PMID: 32406389 DOI: 10.23736/s0022-4707.20.10801-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
BACKGROUND This study aimed to examine the physical capabilities of elite canoe polo players and to identify interrelationships between anthropometric or physiological characteristics and performance on a kayak ergometer. METHODS Eight male participants (age 24.6±4.8 years, weight 84.1±5.3 kg, height 180.0±5.9 cm) completed four all-out time trials (15 s, 180 s, 420 s, 900 s) to determine peak power output (PPO), mean power output (MPO), maximal oxygen uptake (VO<inf>2max</inf>), maximal rate of lactate accumulation (VLa<inf>max</inf>), and maximal lactate steady-state (cMLSS). Critical power (CP) and work that can be performed above CP (W') were assessed using a linear power model. Further, the 30-second end-test power (EP) and work done above EP (WEP) were derived from the 180 s time trial. Finally, indices were calculated from the metabolic and power data. The level of significance was set at P≤0.05. RESULTS Weak to moderate correlations were found for body weight and height compared to PPO and MPOs. VO<inf>2max</inf> correlated strongly with MPO180 and MPO420. VLa<inf>max</inf> correlated moderately with PPO and MPO15. While the calculations of CP, EP, and cMLSS correlated moderately to strongly, their means differed significantly. W' and WEP also differed significantly with a mean difference of 10.2±2.5 kJ. CONCLUSIONS Canoe polo players are similar to sprint paddlers in their constitution, although VO<inf>2max</inf> and PPO are lower. The high correlation between physiological and power parameters also shows that simple tests that do not require blood or gas sampling can be established quickly in daily training practice.
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Affiliation(s)
- Lukas Zwingmann
- Department of Molecular and Cellular Sports Medicine, Institute of Cardiology and Sports Medicine, German Sport University Cologne, Cologne, Germany - .,German Research Center of Elite Sport Cologne, German Sport University Cologne, Cologne, Germany -
| | | | - Patrick Wahl
- Department of Molecular and Cellular Sports Medicine, Institute of Cardiology and Sports Medicine, German Sport University Cologne, Cologne, Germany.,German Research Center of Elite Sport Cologne, German Sport University Cologne, Cologne, Germany
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