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Duchene Y, Simon FR, Ertel GN, Maciejewski H, Gauchard GC, Mornieux G. The stroke rate influences performance, technique and core stability during rowing ergometer. Sports Biomech 2024:1-18. [PMID: 38205960 DOI: 10.1080/14763141.2024.2301992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024]
Abstract
The aim of this study is to determine the effect of stroke rate on performance, technique and core stability during rowing ergometer. Twenty-four high-level rowers performed maximal intensity one-minute bouts at 20, 28 and 34 spm on a RowPerfect3 ergometer. Power at the handle, legs, trunk and arms levels were determined, and core kinematics and neuromuscular activations were measured. The power at the handle was enhanced with a higher stroke rate in the first half of the drive phase due to higher segment's powers. This resulted in technical changes, as for instance greater mean to peak power ratio at each segment level. The higher trunk power preceded a delayed trunk extension but without significant increase in the erector spinae activation. This underlines the role of the core stability to transfer forces at a higher stroke rate. However, no co-activation parameters between trunk flexors and extensors helped further to understand this force transfer. Rowing at low stroke rate can be a training strategy to work on earlier trunk extension, while maintaining erectors spinae levels of activation. Training at higher stroke rate will induce a rowing technique closer to competition with greater neuromuscular activations, and maximise power production.
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Affiliation(s)
- Youri Duchene
- Université de Lorraine, DevAH, Nancy, France
- Université de Lorraine, CARE Grand Est, Nancy, France
| | - Frédéric R Simon
- Université de Lorraine, DevAH, Nancy, France
- Université de Lorraine, CARE Grand Est, Nancy, France
- Faculty of Sport Sciences, Université de Lorraine, Villers-lès-Nancy, France
| | - Geoffrey N Ertel
- Université de Lorraine, DevAH, Nancy, France
- Université de Lorraine, CARE Grand Est, Nancy, France
| | | | - Gérome C Gauchard
- Université de Lorraine, DevAH, Nancy, France
- Université de Lorraine, CARE Grand Est, Nancy, France
- Faculty of Sport Sciences, Université de Lorraine, Villers-lès-Nancy, France
| | - Guillaume Mornieux
- Université de Lorraine, DevAH, Nancy, France
- Université de Lorraine, CARE Grand Est, Nancy, France
- Faculty of Sport Sciences, Université de Lorraine, Villers-lès-Nancy, France
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Simon FR, Ertel GN, Duchene Y, Maciejewski H, Gauchard GC, Mornieux G. Prediction of rowing ergometer performance by technical and core stability parameters. J Sports Sci 2023:1-9. [PMID: 37253176 DOI: 10.1080/02640414.2023.2219076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The purpose of this study was to evaluate the influence of technical and core stability parameters on rowing ergometer performance defined as mean power at the handle. Twenty-four high-level rowers were evaluated at their competitive stroke rate on an instrumented RowPerfect 3 ergometer to determine leg, trunk and arm power output, while trunk and pelvis 3D kinematics were measured. Linear mixed models revealed that mean power at the handle was predicted by the power output of legs, trunk and arms (r2 = 0.99), with trunk power being the best predictor. Time to peak power, work ratio and mean to peak power ratio were relevant technical parameters significantly predicting the different segments' power. In addition, a greater trunk range of motion significantly influenced the power produced by this segment. Accordingly, achieving an earlier peak power together with enhanced work production at the trunk and arm levels, as well as distributing the segments power over the whole drive phase, could serve as recommendations for technical training of rowers on dynamic ergometers in order to produce higher power output. Furthermore, the trunk appears to play a major role as a power producer within the kinetic chain from the legs to the arms.
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Affiliation(s)
- Frédéric R Simon
- Développement, Adaptation et Handicap (DevAH), Faculté de Médecine, Université de Lorraine, Nancy, France
| | - Geoffrey N Ertel
- Développement, Adaptation et Handicap (DevAH), Faculté de Médecine, Université de Lorraine, Nancy, France
| | - Youri Duchene
- Développement, Adaptation et Handicap (DevAH), Faculté de Médecine, Université de Lorraine, Nancy, France
| | | | - Gérome C Gauchard
- Développement, Adaptation et Handicap (DevAH), Faculté de Médecine, Université de Lorraine, Nancy, France
- Université de Lorraine, Faculty of Sport Sciences, Nancy, France
| | - Guillaume Mornieux
- Développement, Adaptation et Handicap (DevAH), Faculté de Médecine, Université de Lorraine, Nancy, France
- Université de Lorraine, Faculty of Sport Sciences, Nancy, France
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Bardin J, Maciejewski H, Diry A, Droit-Volet S, Thomas C, Ratel S. Sex- and age-related differences in the rating of perceived exertion after high-intensity rowing exercise during childhood and adolescence. Psychophysiology 2023:e14296. [PMID: 36939076 DOI: 10.1111/psyp.14296] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 02/28/2023] [Accepted: 02/28/2023] [Indexed: 03/21/2023]
Abstract
The present study aimed to evaluate the effects of age and sex on the rating of perceived exertion (RPE) during high-intensity exercise and determine whether mechanical and physiological parameters could be predictors of RPE during childhood and adolescence. Forty-three boys and 36 girls performed a 60-s all-out test on a rowing ergometer and were categorized by age group (10.0-11.9; 12.0-13.9; 14.0-15.9; 16.0-17.9 years) and sex. Ratings of perceived exertion were assessed using the 6-20 RPE and CR-10 scales and analyzed with respect to mechanical work rate (Wtot ), post-exercise peak blood lactate concentration ([La]peak ), and peak minute ventilation (V̇Epeak ). Multilevel regression modeling revealed a significant influence of Wtot , [La]peak and V̇Epeak on 6-20 RPE and CR-10 scores (r2 = .34 and .36, p < .001, respectively). However, while boys perceived high-intensity exercise as being subjectively more difficult than girls at all ages (p < .05) except 12.0-13.9 years, significant higher mechanical work rate and greater associated metabolic responses in boys than girls were only found from the age of 14 years (Wtot and V̇Epeak ) or 16 years ([La]peak ), suggesting that the association between RPE and mechanical/physiological parameters could not be held before the age of 12 years. To conclude, RPE increased with increasing age, with boys exhibiting higher scores than girls at all ages except 12.0-13.9 years. This finding is probably explained by the higher Wtot and greater concomitant metabolic responses in boys at the time of puberty. However, other factors should be considered at least in children before the age of 12 years.
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Affiliation(s)
- Joffrey Bardin
- French Institute of Sport (INSEP), Laboratory Sport, Exercise and Performance (EA7370), Paris, France
| | | | - Allison Diry
- French Institute of Sport (INSEP), Laboratory Sport, Exercise and Performance (EA7370), Paris, France.,French Rowing Federation, Nogent-sur-Marne, France
| | - Sylvie Droit-Volet
- Laboratoire de Psychologie Sociale et COgnitive (LAPSCO), CNRS, Clermont-Auvergne University, Clermont-Ferrand, France
| | - Claire Thomas
- LBEPS, Evry University, IRBA, Paris Saclay University, Evry, 91025, France
| | - Sébastien Ratel
- AME2P, Clermont-Auvergne University, Clermont-Ferrand, EA 3533, France
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Antero J, Golovkine S, Niffoi L, Meignié A, Chassard T, Delarochelambert Q, Duclos M, Maitre C, Maciejewski H, Diry A, Toussaint JF. Menstrual cycle and hormonal contraceptive phases' effect on elite rowers' training, performance and wellness. Front Physiol 2023; 14:1110526. [PMID: 36875020 PMCID: PMC9981658 DOI: 10.3389/fphys.2023.1110526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Accepted: 02/02/2023] [Indexed: 02/19/2023] Open
Abstract
Objectives: To investigate the effect of menstrual cycle (MC) and hormonal contraception (HC) phases in elite rowers training, performance and wellness monitoring. Methods: Twelve French elite rowers were follow-up for 4,2 cycles on average in their final preparation for the Olympics and Paralympics Games in Tokyo 2021 through an on-site longitudinal study based on repeated measures. Daily self-reported evaluation using Likert rating scales of wellness (sleep quality, fitness, mood, injuries' pain), menstrual symptoms and training parameters (perceived exertion and self-assessment of performance) were collected (n = 1,281) in parallel to a coach evaluation of rowers' performance (n = 136), blinded to theirs MC and HC phases. Salivary samples of estradiol and progesterone were collected in each cycle to help to classify the MC into 6 phases and HC into 2-3 phases depending on the pills' hormone concentration. A chi-square test normalized by each rower was used to compare the upper quintile scores of each studied variable across phases. A Bayesian ordinal logistic regression was applied to model the rowers' self-reported performance. Results: Rowers with a natural cycle, n = 6 ( + 1 amenorrhea) evaluate their performance and wellness with significant higher score indices at the middle of their cycle. Top assessments are rarer at the premenstrual and menses phases, when they more frequently experience menstrual symptoms which are negatively correlated with their performance. The HC rowers, n = 5, also better evaluate their performance when taking the pills and more frequently experience menstrual symptoms during the pill withdrawal. The athletes self-reported performance is correlated with their coach's evaluation. Conclusion: It seems important to integrate MC and HC data in the wellness and training monitoring of female athletes since these parameters vary across hormonal phases affecting training perception of both athlete and coach.
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Affiliation(s)
- Juliana Antero
- Institute for Research in BioMedicine and Epidemiology of Sport, IRMES at INSEP (Institut National du Sport, de l'Expertise et de la Performance), Paris, France
| | - Steven Golovkine
- Institute for Research in BioMedicine and Epidemiology of Sport, IRMES at INSEP (Institut National du Sport, de l'Expertise et de la Performance), Paris, France
| | - Louis Niffoi
- Institute for Research in BioMedicine and Epidemiology of Sport, IRMES at INSEP (Institut National du Sport, de l'Expertise et de la Performance), Paris, France
| | - Alice Meignié
- Institute for Research in BioMedicine and Epidemiology of Sport, IRMES at INSEP (Institut National du Sport, de l'Expertise et de la Performance), Paris, France
| | - Tom Chassard
- Institute for Research in BioMedicine and Epidemiology of Sport, IRMES at INSEP (Institut National du Sport, de l'Expertise et de la Performance), Paris, France
| | - Quentin Delarochelambert
- Institute for Research in BioMedicine and Epidemiology of Sport, IRMES at INSEP (Institut National du Sport, de l'Expertise et de la Performance), Paris, France
| | - Martine Duclos
- Department of Sport Medicine and Functional Exploration, University Hospital CHU G. Montpied, INRAE, UNH, CRNH Auvergne, Clermont Auvergne University, Clermont-Ferrand, France
| | - Carole Maitre
- Medical Department at INSEP (Institut National du Sport, de l'Expertise et de la Performance), Paris, France
| | | | - Allison Diry
- French Rowing Federation, Nogent-sur-Marne, France
| | - Jean-François Toussaint
- Institute for Research in BioMedicine and Epidemiology of Sport, IRMES at INSEP (Institut National du Sport, de l'Expertise et de la Performance), Paris, France.,URP 7329, Université Paris Cité, Paris, France.,Center for Investigation in Sport Medicine, CIMS Hôtel-Dieu, Assistance Publique-Hopitaux de Paris, Paris, France
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Diry A, Ratel S, Nevill A, Maciejewski H. What is the physiological impact of reducing the 2,000 m Olympic distance in rowing to 1,500 m and 1,000 m for French young competitive rowers? Insights from the energy system contribution. Front Physiol 2022; 13:896975. [PMID: 35923235 PMCID: PMC9340205 DOI: 10.3389/fphys.2022.896975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 06/28/2022] [Indexed: 11/13/2022] Open
Abstract
French rowing federation reduced the competition distance to 1,500 and 1,000 m in rowers under 16- (U16) and 14-year-old (U14) respectively, to prepare them progressively to the Olympic 2,000 m distance in under 18-year-old (U18). This study aimed to check the hypothesis that relative aerobic (%EAe) and anaerobic (%EAn) energy contributions would be comparable between the competition distances since the more oxidative profile of younger age categories could offset the greater anaerobic contribution induced by shorter rowing races. Thirty-one 12- to 17-year-old competitive rowers performed a race of 2,000, 1,500, or 1,000 m on a rowing ergometer according to their age category. %EAe and %EAn were estimated from oxygen consumption, changes in blood lactate concentration and their energy equivalents. %EAe was lower in U16 than U18 (84.7 vs. 87.0%, p < 0.01), and in U14 than U16 (80.6 vs. 84.7%, p < 0.001). %EAn was higher in U16 than U18 (15.3 vs. 13.0%, p < 0.01), and in U14 than U16 (19.4 vs. 15.3%, p < 0.01). The results did not confirm our initial hypothesis since %EAe and %EAn were significantly different between the race distances, and thus age categories. However, %EAn in U18, U16 and U14 were found to be in the range of values previously found in adult rowers over the 2,000 m Olympic distance (12–30%). Therefore, on a practical level, the strategy implemented by the French rowing federation to reduce the competition distance in the younger age categories could be relevant to progressively prepare them to the physiological requirements encountered over the Olympic distance.
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Affiliation(s)
| | - Sébastien Ratel
- AME2P—EA 3533, Clermont-Auvergne University, Clermont-Ferrand, France
| | - Alan Nevill
- Faculty of Education, Health and Wellbeing, University of Wolverhampton, Walsall Campus, Walsall, United Kingdom
| | - Hugo Maciejewski
- French Rowing Federation, Paris, France
- *Correspondence: Hugo Maciejewski,
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Bardin J, Maciejewski H, Diry A, Armstrong N, Thomas C, Ratel S. Authors' Reply to Dotan: "Sex-related differences in accumulated O 2 deficit incurred by high-intensity rowing exercise during childhood and adolescence". Eur J Appl Physiol 2021; 121:2651-2652. [PMID: 34052877 DOI: 10.1007/s00421-021-04722-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 05/20/2021] [Indexed: 10/20/2022]
Affiliation(s)
- Joffrey Bardin
- Laboratory Sport, Expertise, and Performance-EA 7370, Research Department, French Institute of Sport (INSEP), Paris, France
| | | | - Allison Diry
- Laboratory Sport, Expertise, and Performance-EA 7370, Research Department, French Institute of Sport (INSEP), Paris, France.,French Rowing Federation, Nogent-sur-Marne, France
| | - Neil Armstrong
- Children's Health and Exercise Research Centre, University of Exeter, Exeter, UK
| | - Claire Thomas
- LBEPS, Univ Evry, IRBA, Paris Saclay University, 91025, Evry, France
| | - Sébastien Ratel
- AME2P, EA 3533, Clermont-Auvergne University, Clermont-Ferrand, France.
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Bardin J, Maciejewski H, Diry A, Armstrong N, Thomas C, Ratel S. Authors' Reply to Januário da Silva et al.: "Sex-related differences in accumulated O 2 deficit incurred by high-intensity rowing exercise during childhood and adolescence". Eur J Appl Physiol 2021; 121:2367-2368. [PMID: 33934249 DOI: 10.1007/s00421-021-04702-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 04/26/2021] [Indexed: 10/21/2022]
Affiliation(s)
- Joffrey Bardin
- Research Department, Laboratory Sport, French Institute of Sport (INSEP), Expertise, and Performance, 7370, Paris, EA, France
| | | | - Allison Diry
- Research Department, Laboratory Sport, French Institute of Sport (INSEP), Expertise, and Performance, 7370, Paris, EA, France.,French Rowing Federation, Nogent-sur-Marne, France
| | - Neil Armstrong
- Children's Health and Exercise Research Centre, University of Exeter, Exeter, UK
| | - Claire Thomas
- LBEPS, Univ Evry, IRBA, Paris Saclay University, 91025, Evry, France
| | - Sébastien Ratel
- AME2P, Clermont-Auvergne University, 3533, Clermont-Ferrand, EA, France.
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Maciejewski H, Bourdin M, Féasson L, Dubouchaud H, Messonnier LA. Correction: Non-oxidative Energy Supply Correlates with Lactate Transport and
Removal in Trained Rowers. Int J Sports Med 2020. [DOI: 10.1055/a-1225-6741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
| | - Muriel Bourdin
- Laboratoire de Biomécanique et Mécanique des Chocs,
Université de Lyon, Université Lyon 1, Oullins Cedex,
France
| | - Léonard Féasson
- Myology Unit, Neuromuscular Rare Diseases Referent Center of
Rhone-Alps, CHU Saint-Etienne, Saint-Etienne, France
| | - Hervé Dubouchaud
- Laboratory of Fundamental and Applied Bioenergetics, Université
Grenoble Alpes, Grenoble, France
| | - Laurent André Messonnier
- Laboratoire Interuniversitaire de Biologie de la Motricité,
Université de Savoie, Le Bourget du Lac, France
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Diry A, Ratel S, Bardin J, Armstrong N, De Larochelambert Q, Thomas C, Maciejewski H. Importance of dimensional changes on glycolytic metabolism during growth. Eur J Appl Physiol 2020; 120:2137-2146. [PMID: 32725380 DOI: 10.1007/s00421-020-04436-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 07/10/2020] [Indexed: 11/28/2022]
Abstract
PURPOSE The aim of the present study was to investigate (i) how glycolytic metabolism assessed by accumulated oxygen deficit (AODgly) and blood metabolic responses (lactate and pH) resulting from high-intensity exercise change during growth, and (ii) how lean body mass (LBM) influences AODgly and its relationship with blood markers. METHODS Thirty-six 11- to 17-year olds performed a 60-s all-out test on a rowing ergometer. Allometric modelling was used to investigate the influence of LBM and LBM + maturity offset (MO) on AODgly and its relationship with the extreme post-exercise blood values of lactate ([La]max) and pH (pHmin) obtained during the recovery period. RESULTS AODgly and [La]max increased while pHmin decreased linearly with LBM and MO (r2 = 0.46 to 0.72, p < 0.001). Moreover, AODgly was positively correlated with [La]max (r2 = 0.75, p < 0.001) and negatively correlated with pHmin (r2 = 0.77, p < 0.001). When AODgly was scaled for LBM, the coefficients of the relationships with blood markers drastically decreased by three to four times ([La]max: r2 = 0.24, p = 0.002; pHmin: r2 = 0.30, p < 0.001). Furthermore, by scaling AODgly for LBM + MO, the correlation coefficients with blood markers became even lower ([La]max: r2 = 0.12, p = 0.037; pHmin: r2 = 0.18, p = 0.009). However, MO-related additional changes accounted much less than LBM for the relationships between AODgly and blood markers. CONCLUSION The results challenge previous reports of maturation-related differences in glycolytic energy turnover and suggest that changes in lean body mass are a more powerful influence than maturity status on glycolytic metabolism during growth.
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Affiliation(s)
- Allison Diry
- French Rowing Federation, 17, boulevard de la Marne, 94130, Nogent-sur-Marne, France.,Laboratory Sport, Expertise, and Performance - EA 7370, Research Department, French Institute of Sport (INSEP), Paris, France
| | - Sébastien Ratel
- AME2P - EA 3533, Clermont-Auvergne University, Clermont-Ferrand, France
| | - Joffrey Bardin
- Laboratory Sport, Expertise, and Performance - EA 7370, Research Department, French Institute of Sport (INSEP), Paris, France
| | - Neil Armstrong
- Children's Health and Exercise Research Centre, University of Exeter, Exeter, UK
| | - Quentin De Larochelambert
- French Institute of Sport (INSEP), IRMES (Institut de Recherche bioMédicale et d'Épidémiologie du Sport) - EA 7329, Paris, France
| | - Claire Thomas
- LBEPS - University of Évry Val d'Essonne, IRBA - Université Paris Saclay, Évry, France
| | - Hugo Maciejewski
- French Rowing Federation, 17, boulevard de la Marne, 94130, Nogent-sur-Marne, France. .,LBEPS - University of Évry Val d'Essonne, IRBA - Université Paris Saclay, Évry, France.
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Maciejewski H, Bourdin M, Féasson L, Dubouchaud H, Messonnier LA. Non-oxidative Energy Supply Correlates with Lactate Transport and Removal in Trained Rowers. Int J Sports Med 2020; 41:936-943. [PMID: 32643774 DOI: 10.1055/a-1186-1761] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
This study aimed to test if the non-oxidative energy supply (estimated by the accumulated oxygen deficit) is associated with an index of muscle lactate accumulation during exercise, muscle monocarboxylate transporter content and the lactate removal ability during recovery in well-trained rowers. Seventeen rowers completed a 3-min all-out exercise on rowing ergometer to estimate the accumulated oxygen deficit. Blood lactate samples were collected during the subsequent passive recovery to assess individual blood lactate curves, which were fitted to the bi-exponential time function: La(t)= [La](0)+A1·(1-e-γ 1 t)+A2·(1-e-γ 2 t), where the velocity constants γ1 and γ2 (min-1) denote the lactate exchange and removal abilities during recovery, respectively. The accumulated oxygen deficit was correlated with the net amount of lactate released from the previously active muscles (r =0.58, P<0.05), the monocarboxylate transporters MCT1 and MCT4 (r=0.63, P<0.05) and γ2 (r=0.55, P<0.05). γ2 and the lactate release rate at exercise completion were negatively correlated with citrate synthase activity. These findings suggest that the capacity to supply non-oxidative energy during supramaximal rowing exercise is associated with muscle lactate accumulation and transport, as well as lactate removal ability.
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Affiliation(s)
| | - Muriel Bourdin
- Laboratoire de Biomécanique et Mécanique des Chocs, Université de Lyon, Université Lyon 1, Oullins Cedex, France
| | - Léonard Féasson
- Myology Unit, Neuromuscular Rare Diseases Referent Center of Rhone-Alps, CHU Saint-Etienne, Saint-Etienne, France
| | - Hervé Dubouchaud
- Laboratory of Fundamental and Applied Bioenergetics, Université Grenoble Alpes, Grenoble, France
| | - Laurent André Messonnier
- Laboratoire Interuniversitaire de Biologie de la Motricité, Université de Savoie, Le Bourget du Lac, France
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Birat A, Bourdier P, Piponnier E, Blazevich AJ, Maciejewski H, Duché P, Ratel S. Metabolic and Fatigue Profiles Are Comparable Between Prepubertal Children and Well-Trained Adult Endurance Athletes. Front Physiol 2018; 9:387. [PMID: 29740332 PMCID: PMC5928424 DOI: 10.3389/fphys.2018.00387] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 03/28/2018] [Indexed: 11/13/2022] Open
Abstract
The aim of this study was to determine whether prepubertal children are metabolically comparable to well-trained adult endurance athletes and if this translates into similar fatigue rates during high-intensity exercise in both populations. On two different occasions, 12 prepubertal boys (10.5 ± 1.1 y), 12 untrained men (21.2 ± 1.5 y), and 13 endurance male athletes (21.5 ± 2.7 y) completed an incremental test to determine the power output at VO2max (PVO2max) and a Wingate test to evaluate the maximal anaerobic power (Pmax) and relative decrement in power output (i.e., the fatigue index, FI). Furthermore, oxygen uptake (VO2), heart rate (HR), and capillary blood lactate concentration ([La]) were measured to determine (i) the net aerobic contribution at 5-s intervals during the Wingate test, and (ii) the post-exercise recovery kinetics of VO2, HR, and [La]. The Pmax-to-PVO2max ratio was not significantly different between children (1.9 ± 0.5) and endurance athletes (2.1 ± 0.2) but lower than untrained men (3.2 ± 0.3, p < 0.001 for both). The relative energy contribution derived from oxidative metabolism was also similar in children and endurance athletes but greater than untrained men over the second half of the Wingate test (p < 0.001 for both). Furthermore, the post-exercise recovery kinetics of VO2, HR, and [La] in children and endurance athletes were faster than those of untrained men. Finally, FI was comparable between children and endurance athletes (-35.2 ± 9.6 vs. -41.8 ± 9.4%, respectively) but lower than untrained men (-51.8 ± 4.1%, p < 0.01). To conclude, prepubertal children were observed to be metabolically comparable to well-trained adult endurance athletes, and were thus less fatigable during high-intensity exercise than untrained adults.
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Affiliation(s)
- Anthony Birat
- AME2P, UFR STAPS, Clermont-Auvergne University, Clermont-Ferrand, France
| | - Pierre Bourdier
- AME2P, UFR STAPS, Clermont-Auvergne University, Clermont-Ferrand, France
| | - Enzo Piponnier
- AME2P, UFR STAPS, Clermont-Auvergne University, Clermont-Ferrand, France
| | - Anthony J Blazevich
- Centre for Exercise and Sports Science Research, School of Exercise and Health Sciences, Edith Cowan University, Joondalup, WA, Australia
| | | | - Pascale Duché
- AME2P, UFR STAPS, Clermont-Auvergne University, Clermont-Ferrand, France
| | - Sébastien Ratel
- AME2P, UFR STAPS, Clermont-Auvergne University, Clermont-Ferrand, France
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Maciejewski H, Rahmani A, Chorin F, Lardy J, Samozino P, Ratel S. Methodological Considerations on the Relationship Between the 1,500-m Rowing Ergometer Performance and Vertical Jump in National-Level Adolescent Rowers. J Strength Cond Res 2018. [PMID: 29533359 DOI: 10.1519/jsc.0000000000002406] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Maciejewski, H, Rahmani, A, Chorin, F, Lardy, J, Samozino, P, and Ratel, S. Methodological considerations on the relationship between the 1,500-m rowing ergometer performance and vertical jump in national-level adolescent rowers. J Strength Cond Res 33(11): 3000-3007, 2019-The purpose of this study was to investigate whether 3 different approaches for evaluating squat jump performance were correlated with rowing ergometer performance in elite adolescent rowers. Fourteen young male competitive rowers (15.3 ± 0.6 years), who took part in the French rowing national championships, performed a 1,500-m all-out rowing ergometer performance (P1500) and a squat jump (SJ) test. The performance in SJ was determined by calculating the jump height (HSJ in cm), a jump index (ISJ = HSJ·body mass·gravity, in J), and the mean power output (PSJ in W) from the Samozino et al.'s method. Furthermore, allometric modeling procedures were used to consider the importance of body mass (BM) in the relationships between P1500 and jump scores. P1500 was significantly correlated with HSJ (r = 0.29, p ≤ 0.05), ISJ (r = 0.72, p < 0.0001), and PSJ (r = 0.86, p < 0.0001). Furthermore, BM explained at least 96% of the relationships between SJ and rowing performances. However, the similarity between both allometric exponents for PSJ and P1500 (1.15 and 1.04, respectively) indicates that BM could influence jump and rowing ergometer performances at the same rate, and that PSJ could be the best correlate of P1500. Therefore, the calculation of power seems to be more relevant than HSJ and ISJ to (a) evaluate jump performance and (b) infer the capacity of adolescent rowers to perform 1,500-m all-out rowing ergometer performance, irrespective of their body mass. This could help coaches to improve their training program and potentially identify talented young rowers.
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Affiliation(s)
- Hugo Maciejewski
- French Rowing Federation, Nogent-sur-Marne, France.,Inter-university Laboratory of Human Movement Biology, Savoie Mont Blanc University, Le Bourget-du-Lac, France
| | - Abderrahmane Rahmani
- Laboratory of "Motricity, Interactions, Performance," Le Mans University, Le Mans, France
| | - Frédéric Chorin
- Laboratory of "Motricity, Interactions, Performance," Le Mans University, Le Mans, France.,Center for Innovation and Uses in Health, Nice, France
| | - Julien Lardy
- Laboratory of "Motricity, Interactions, Performance," Le Mans University, Le Mans, France
| | - Pierre Samozino
- Inter-university Laboratory of Human Movement Biology, Savoie Mont Blanc University, Le Bourget-du-Lac, France
| | - Sébastien Ratel
- Laboratory of Metabolic Adaptations During Exercise in Physiological and Pathological Conditions, Blaise Pascal University, Clermont-Ferrand, France
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13
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Januszewski R, Dutkiewicz M, Maciejewski H, Marciniec B. Synthesis and characterization of phosphorus-containing, silicone rubber based flame retardant coatings. REACT FUNCT POLYM 2018. [DOI: 10.1016/j.reactfunctpolym.2017.12.006] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Giroux C, Maciejewski H, Ben-Abdessamie A, Chorin F, Lardy J, Ratel S, Rahmani A. Correction: Relationship between Force-Velocity Profiles and 1,500-m Ergometer Performance in Young Rowers. Int J Sports Med 2018; 38:e4. [PMID: 29361644 DOI: 10.1055/s-0044-100693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Caroline Giroux
- Le Mans University, Laboratory 'Movement, Interactions, Performance' (EA 4334), Faculty of Sciences and Technologies, Department of Sports Siences, Le Mans, France.,University of Paris-Est Créteil, Laboratory 'Bioingenierie, Tissus et Neuroplasiticité' (EA 7377), Créteil, France
| | | | - Amal Ben-Abdessamie
- Le Mans University, Laboratory 'Movement, Interactions, Performance' (EA 4334), Faculty of Sciences and Technologies, Department of Sports Siences, Le Mans, France
| | - Frédéric Chorin
- Pôle Réhabilitation Autonomie Vieillissement, CHU de Cimiez, Nice, France.,LAMHESS - Laboratoire Motricité Humaine, Expertise, Sport, Santé, UFR STAPS, Nice, France
| | - Julien Lardy
- Le Mans University, Laboratory 'Movement, Interactions, Performance' (EA 4334), Faculty of Sciences and Technologies, Department of Sports Siences, Le Mans, France
| | - Sebastien Ratel
- Blaise-Pascal University, Laboratory AME2P, UFR STAPS, Aubière, France
| | - Abderrahmane Rahmani
- Le Mans University, Laboratory 'Movement, Interactions, Performance' (EA 4334), Faculty of Sciences and Technologies, Department of Sports Siences, Le Mans, France
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15
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Jankowska-Wajda M, Kukawka R, Smiglak M, Maciejewski H. The effect of the catalyst and the type of ionic liquid on the hydrosilylation process under batch and continuous reaction conditions. NEW J CHEM 2018. [DOI: 10.1039/c7nj04396a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We present a simplified method for performing the hydrosilylation reaction in a heterogeneous catalytic system with the use of ionic liquids and microreactor systems.
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Affiliation(s)
| | - R. Kukawka
- Adam Mickiewicz, University
- Faculty of Chemistry
- 61-614 Poznan
- Poland
- Adam Mickiewicz University Foundation
| | - M. Smiglak
- Adam Mickiewicz, University
- Faculty of Chemistry
- 61-614 Poznan
- Poland
- Adam Mickiewicz University Foundation
| | - H. Maciejewski
- Adam Mickiewicz, University
- Faculty of Chemistry
- 61-614 Poznan
- Poland
- Adam Mickiewicz University Foundation
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16
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Giroux C, Maciejewski H, Ben-Abdessamie A, Chorin F, Lardy J, Ratel S, Rahmani A. Relationship between Force-Velocity Profiles and 1,500-m Ergometer Performance in Young Rowers. Int J Sports Med 2017; 38:992-1000. [PMID: 28965345 DOI: 10.1055/s-0043-117608] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Rowing races require developing high level of force and power output at high contraction velocity. This study determined the force-velocity and power-velocity (F-P-V) profiles of lower and upper limbs of adolescent rowers and their relationships with a 1,500-m rowing ergometer performance. The power developed during the 1,500-m (P1500) was evaluated in fourteen national-level male rowers (age: 15.3±0.6 yrs). F-P-V profiles were assessed during bench pull (BP) and squat jump (SJ) exercises. The theoretical maximal values of force (F0), velocity (V0), power output (Pmax) and the F-V relationship slope (S FV ) were determined. The body mass (BM) influence on these relationships was considered using an allometric approach. F0 was 720±144 and 2146±405 N, V0 was 1.8±0.1 and 1.8±0.3 m·s-1, Pmax was 333±83 and 968±204 W and SFV was -391±54 and -1,200±260 N·s·m-1 for BP and SJ, respectively. Upper and lower limb F0 and Pmax were significantly related. P1500 was significantly (P<0.05) correlated to V0-BP, F0-BP, SFV-BP, Pmax-BP, F0-SJ and Pmax-SJ (r²=0.29 to 0.79). BM accounted for more than 90% of these relationships. Rowers' F-P-V profiles reflect adaptations to chronic rowing practice. F-P-V profiles and rowing performance correlations suggest that BP and SJ exercises are relevant to evaluate young rowers' explosive abilities.
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Affiliation(s)
- Caroline Giroux
- Le Mans University, Laboratory ‛Movement, Interactions, Performance' (EA 4334), Faculty of Sciences and Technologies, Department of Sport Sciences, Le Mans, France
| | - Hugo Maciejewski
- University of Paris-Est Créteil, Laboratory ‛Bioingenierie, Tissus et Neuroplasticité' (EA 7377), Créteil, France.,Laboratory of Biomechanics and Human Modelling,Faculty of Medicine Lyon-Sud, Oullins cedex, France.,French Rowing Federation, Nogent-sur-Marne, France
| | - Amal Ben-Abdessamie
- Le Mans University, Laboratory ‛Movement, Interactions, Performance' (EA 4334), Faculty of Sciences and Technologies, Department of Sport Sciences, Le Mans, France
| | - Frédéric Chorin
- Le Mans University, Laboratory ‛Movement, Interactions, Performance' (EA 4334), Faculty of Sciences and Technologies, Department of Sport Sciences, Le Mans, France
| | - Julien Lardy
- Le Mans University, Laboratory ‛Movement, Interactions, Performance' (EA 4334), Faculty of Sciences and Technologies, Department of Sport Sciences, Le Mans, France
| | - Sebastien Ratel
- Laboratory of Biomechanics and Human Modelling,Faculty of Medicine Lyon-Sud, Oullins cedex, France.,Blaise-Pascal University, Laboratory AME2P, UFR STAPS, Aubière, France
| | - Abderrahmane Rahmani
- French Rowing Federation, Nogent-sur-Marne, France.,University of Paris-Est Créteil, Laboratory ‛Bioingenierie, Tissus et Neuroplasticité' (EA 7377), Créteil, France
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17
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Garncarz M, Hulanicka M, Maciejewski H, Parzeniecka-Jaworska M, Jank M. Correlation between peripheral blood cell transcriptomic profile and clinical parameters of chronic mitral valve disease in Dachshunds. Pol J Vet Sci 2016; 19:849-857. [DOI: 10.1515/pjvs-2016-0106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Studies identifying specific pathologically expressed genes have been performed on diseased myocardial tissue samples, however less invasive studies on gene expression of peripheral blood mononucleated cells give promising results. This study assessed transcriptomic data that may be used to evaluate Dachshunds with chronic mitral valve disease. Dachshunds with different stages of heart disease were compared to a control, healthy group. Microarray data analysis revealed clusters of patients with similar expression profiles. The clusters were compared to the clinical classification scheme. Unsupervised classification of the studied groups showed three clusters. Clinical and laboratory parameters of patients from the cluster 1 were in accordance with those found in patients without heart disease. Data obtained from patients from the cluster 3 were typical of advanced heart failure patients. Comparison of the cluster 1 and 3 groups revealed 1133 differentially expressed probes, 7 significantly regulated process pathways and 2 significantly regulated Ariadne Metabolic Pathways. This study may serve as a guideline for directing future research on gene expression in chronic mitral valve disease.
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18
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Maciejewski H, Bourdin M, Féasson L, Dubouchaud H, Denis C, Freund H, Messonnier LA. Muscle MCT4 Content Is Correlated with the Lactate Removal Ability during Recovery Following All-Out Supramaximal Exercise in Highly-Trained Rowers. Front Physiol 2016; 7:223. [PMID: 27375499 PMCID: PMC4901069 DOI: 10.3389/fphys.2016.00223] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Accepted: 05/27/2016] [Indexed: 11/18/2022] Open
Abstract
The purpose of this study was to test if the lactate exchange (γ1) and removal (γ2) abilities during recovery following short all-out supramaximal exercise correlate with the muscle content of MCT1 and MCT4, the two isoforms of the monocarboxylate transporters family involved in lactate and H+ co-transport in skeletal muscle. Eighteen lightweight rowers completed a 3-min all-out exercise on rowing ergometer. Blood lactate samples were collected during the subsequent passive recovery to assess an individual blood lactate curve (IBLC). IBLC were fitted to the bi-exponential time function: La(t) = [La](0) + A1(1 − e-γ1t) + A2(1 − e-γ2t) where [La](0) is the blood lactate concentration at exercise completion and the velocity constants γ1 and γ2 denote the lactate exchange and removal abilities, respectively. An application of the bi-compartmental model of lactate distribution space allowed estimation of the lactate removal rate at exercise completion [LRR(0)]. Biopsy of the right vastus lateralis was taken at rest to measure muscle MCT1 and MCT4 content. Fiber type distribution, activity of key enzymes and capillary density (CD) were also assessed. γ1 was correlated with [La](0) (r = −0.54, P < 0.05) but not with MCT1, MCT4 or CD. γ2 and LRR(0) were correlated with MCT4 (r = 0.63, P < 0.01 and r = 0.73, P < 0.001, respectively) but not with MCT1 or cytochrome c oxidase activity. These findings suggest that the lactate exchange ability is highly dependent on the milieu so that the importance of the muscle MCT1 and MCT4 content in γ1 was hidden in the present study. Our results also suggest that during recovery following all-out supramaximal exercise in well-trained rowers, MCT4 might play a significant role in the distribution and delivery of lactate for its subsequent removal.
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Affiliation(s)
- Hugo Maciejewski
- Inter-University Laboratory of Human Movement Biology, University of Savoy Mont BlancLe Bourget-du-Lac, France; French Rowing FederationNogent-sur-Marne, France
| | - Muriel Bourdin
- IFSTTAR, LBMC UMR_T9406, Claude Bernard University Lyon 1 Oullins, France
| | - Léonard Féasson
- Myology Unit, Neuromuscular Rare Diseases Referent Center of Rhone-AlpsCHU Saint-Etienne, France; Inter-University Laboratory of Human Movement Biology, University of LyonSaint-Etienne, France
| | - Hervé Dubouchaud
- Laboratory of Fundamental and Applied Bioenergetics, Grenoble Alpes UniversityGrenoble, France; Institut National de la Santé et de la Recherche Médicale, U1055Grenoble, France
| | - Christian Denis
- Myology Unit, Neuromuscular Rare Diseases Referent Center of Rhone-AlpsCHU Saint-Etienne, France; Inter-University Laboratory of Human Movement Biology, University of LyonSaint-Etienne, France
| | - Hubert Freund
- Inter-University Laboratory of Human Movement Biology, University of Savoy Mont Blanc Le Bourget-du-Lac, France
| | - Laurent A Messonnier
- Inter-University Laboratory of Human Movement Biology, University of Savoy Mont Blanc Le Bourget-du-Lac, France
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19
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Kukawka R, Pawlowska-Zygarowicz A, Dutkiewicz M, Maciejewski H, Smiglak M. New approach to hydrosilylation reaction in ionic liquids as solvent in microreactor system. RSC Adv 2016. [DOI: 10.1039/c6ra08278e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Continuous flow-through reactors on a micro scale (microreactors) are being investigated as a new approach to chemical synthesis, due to larger surface-to-volume ratios and micro-structured internal volumes, which allow for efficient heat exchange.
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Affiliation(s)
- R. Kukawka
- Faculty of Chemistry
- Adam Mickiewicz University in Poznań
- Poznan
- Poland
| | | | - M. Dutkiewicz
- Center for Advanced Technologies
- Adam Mickiewicz University in Poznań
- Poznan
- Poland
- Poznan Science and Technology Park
| | - H. Maciejewski
- Faculty of Chemistry
- Adam Mickiewicz University in Poznań
- Poznan
- Poland
- Poznan Science and Technology Park
| | - M. Smiglak
- Faculty of Chemistry
- Adam Mickiewicz University in Poznań
- Poznan
- Poland
- Poznan Science and Technology Park
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20
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Dopierała K, Bojakowska K, Karasiewicz J, Maciejewski H, Prochaska K. Interfacial behaviour of cubic silsesquioxane and silica nanoparticles in Langmuir and Langmuir–Blodgett films. RSC Adv 2016. [DOI: 10.1039/c6ra18255k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Fluorinated polyhedral oligomeric silsesquioxanes (POSS) have been established as useful for the fabrication of superhydrophobic coatings, however little attention has been paid to their use for making ultrathin film by the Langmuir–Blodgett method.
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Affiliation(s)
- K. Dopierała
- Institute of Chemical Technology and Engineering
- Poznan University of Technology
- 60-965 Poznań
- Poland
| | - K. Bojakowska
- Institute of Chemical Technology and Engineering
- Poznan University of Technology
- 60-965 Poznań
- Poland
| | - J. Karasiewicz
- Faculty of Chemistry
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
| | - H. Maciejewski
- Faculty of Chemistry
- Adam Mickiewicz University
- 61-614 Poznań
- Poland
| | - K. Prochaska
- Institute of Chemical Technology and Engineering
- Poznan University of Technology
- 60-965 Poznań
- Poland
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21
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Rahmani A, Giroux C, Ben Abdessamie A, Chorin F, Lardy J, Maciejewski H. Anaerobic physical evaluation of young national rowers. Comput Methods Biomech Biomed Engin 2015; 18 Suppl 1:2034-5. [PMID: 26237417 DOI: 10.1080/10255842.2015.1069609] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- A Rahmani
- a Laboratoire 'Motricité, Interactions, Performance' (EA 4334), Université Le Mans , Le Mans , France
| | - C Giroux
- a Laboratoire 'Motricité, Interactions, Performance' (EA 4334), Université Le Mans , Le Mans , France
| | - A Ben Abdessamie
- a Laboratoire 'Motricité, Interactions, Performance' (EA 4334), Université Le Mans , Le Mans , France
| | - F Chorin
- a Laboratoire 'Motricité, Interactions, Performance' (EA 4334), Université Le Mans , Le Mans , France.,b Centre d'Innovation et d'Usages en Santé, CIU-Santé , Nice , France
| | - J Lardy
- a Laboratoire 'Motricité, Interactions, Performance' (EA 4334), Université Le Mans , Le Mans , France
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22
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Smigiel R, Lebioda A, Blaszczyński M, Korecka K, Czauderna P, Korlacki W, Jakubiak A, Bednarczyk D, Maciejewski H, Wizinska P, Sasiadek MM, Patkowski D. Alternations in genes expression of pathway signaling in esophageal tissue with atresia: results of expression microarray profiling. Dis Esophagus 2015; 28:229-33. [PMID: 24460849 DOI: 10.1111/dote.12173] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Esophageal atresia (EA) is a congenital defect of the esophagus involving the interruption of the esophagus with or without connection to the trachea (tracheoesophageal fistula [TEF]). EA/TEF may occur as an isolated anomaly, may be part of a complex of congenital defects (syndromic), or may develop within the context of a known syndrome or association. The molecular mechanisms underlying the development of EA are poorly understood. It is supposed that a combination of multigenic factors and epigenetic modification of genes play a role in its etiology. The aim of our work was to assess the human gene expression microarray study in esophageal tissue samples. Total RNA was extracted from 26 lower pouches of esophageal tissue collected during thoracoscopic EA repair in neonates with the isolated (IEA) and the syndromic form (SEA). We identified 787 downregulated and 841 upregulated transcripts between SEA and controls, and about 817 downregulated and 765 upregulated probes between IEA and controls. Fifty percent of these genes showed differential expression specific for either IEA or SEA. Functional pathway analysis revealed substantial enrichment for Wnt and Sonic hedgehog, as well as cytokine and chemokine signaling pathways. Moreover, we performed reverse transcription polymerase chain reaction study in a group of SHH and Wnt pathways genes with differential expression in microarray profiling to confirm the microarray expression results. We verified the altered expression in SFRP2 gene from the Wnt pathway as well as SHH, GLI1, GLI2, and GLI3 from the Sonic hedgehog pathway. The results suggest an important role of these pathways and genes for EA/TEF etiology.
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Affiliation(s)
- R Smigiel
- Department of Genetics, Wroclaw Medical University, Wrocław, Poland
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23
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Maciejewski H, Karasiewicz J, Dutkiewicz M, Nowicki M, Majchrzycki Ł. Effect of the type of fluorofunctional organosilicon compounds and the method of their application onto the surface on its hydrophobic properties. RSC Adv 2014. [DOI: 10.1039/c4ra07392d] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Different fluorofunctional organosilicon compounds were used for glass surface modification and the influence of their structure on the surface hydrophobic properties was investigated.
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Affiliation(s)
- H. Maciejewski
- Adam Mickiewicz University
- Faculty of Chemistry
- Poznań 61-614, Poland
- Adam Mickiewicz University Foundation
- Poznań Science and Technology Park
| | - J. Karasiewicz
- Adam Mickiewicz University Foundation
- Poznań Science and Technology Park
- Poznań 61-612, Poland
| | - M. Dutkiewicz
- Wielkopolska Centre of Advanced Technologies
- Poznań 61-614, Poland
| | - M. Nowicki
- Institute of Physics
- Poznań University of Technology
- Poznań 60-965, Poland
| | - Ł. Majchrzycki
- Wielkopolska Centre of Advanced Technologies
- Poznań 61-614, Poland
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24
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Walkowicz E, Unold O, Maciejewski H, Skrobanek P. The influence of Schweres Warmblut breed stallions on the exterior of Silesian breed horses. J Anim Feed Sci 2013. [DOI: 10.22358/jafs/65996/2013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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25
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Maciejewski H, Bourdin M, Lacour JR, Denis C, Moyen B, Messonnier L. Lactate accumulation in response to supramaximal exercise in rowers. Scand J Med Sci Sports 2012; 23:585-92. [PMID: 22288604 DOI: 10.1111/j.1600-0838.2011.01423.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/04/2011] [Indexed: 11/30/2022]
Abstract
The aim of this study was to test (a) three methods to estimate the quantity of lactate accumulated (QLaA ) in response to supramaximal exercise and (b) correlations between QLaA and the nonoxidative energy supply assessed by the accumulated oxygen deficit (AOD). Nine rowers performed a 3-min all-out test on a rowing ergometer to estimate AOD and lactate accumulation in response to exercise. Peak blood lactate concentration [(La)peak ] during recovery was assessed, allowing QLaA(m1) to be estimated by the method of Margaria et al. Application of a bicompartmental model of lactate distribution space to the blood lactate recovery curves allowed estimation of (a) the net amount of lactate released during recovery from the active muscles (NALR max ), and (b) QLaA according to two methods (QLaA(m2) and QLaA(m3)). (La)peak did not correlate with AOD. QLaA(m1), QLaA(m2) and QLaA(m3) correlated with AOD (r = 0.70, r = 0.85 and r = 0.92, respectively). These results confirm that (La)peak does not provide reliable information on nonoxidative energy supply during supramaximal exercise. The correlations between AOD and QLaA(m2) and QLaA(m3) support the concept of studying blood lactate recovery curves to estimate lactate accumulation and thus the contribution of nonoxidative pathway to energy supply during supramaximal exercise.
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Affiliation(s)
- H Maciejewski
- University of Lyon, University Lyon 1, IFSTTAR, LBMC UMR_T 9406, Oullins, France; French Rowing Federation (FFSA), Nogent-sur-Marne, France
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26
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Wieteska-Skrzeczynska W, Grzelkowska-Kowalczyk K, Jank M, Maciejewski H. Transcriptional dysregulation of skeletal muscle protein metabolism in streptozotocin-diabetic mice. J Physiol Pharmacol 2009; 60 Suppl 1:29-36. [PMID: 19609011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 01/09/2009] [Accepted: 04/15/2009] [Indexed: 05/28/2023]
Abstract
The purpose of the study was to evaluate potential changes in expression of genes involved in protein metabolism and myogenic differentiation markers in skeletal muscle of streptozotocin-diabetic mice. Microarray analysis revealed alterations in the expression of 84 gene transcripts in gastrocnemius muscle of diabetic mice. Regarding protein metabolism a marked downregulation in gene transcripts for: general transcription factor IIA1 (-1.88, P=0.016309), TATA box binding protein (-2.17, P=0.037373), eukaryotic translation initiation factor 4E nuclear import factor 1 (-1.61, P=0.037373), eukaryotic translation elongation factor Ibeta2 (-1.95, P=0.010406), ubiquitin-like 5 (-1.67, P=0.024975) and ubiquitin conjugating enzyme 7 interacting protein 1 (-1.68, P=0.016309) was observed. STZ-diabetes caused a drop in the expression of myogenin, whereas myostatin level was significantly elevated. In conclusion, 1) STZ-diabetes attenuates expression of gene transcripts involved in the process of transcription and translation, which may affect skeletal muscle protein synthesis and lead to nitrogen imbalance, 2) impaired expression of gene transcripts involved in the regulation and activity of the ubiquitin-proteasome pathway may contribute to attenuation of mechanisms eliminating damaged proteins in STZ-diabetes, 3) changes in the expression of key myogenic factors, manifested by a decrease in myogenin level and enhancement of myostatin expression may be one of the mechanisms limiting skeletal muscle growth and regeneration associated with diabetes.
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Affiliation(s)
- W Wieteska-Skrzeczynska
- Department of Physiological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Nowoursynowska 159, 02-776 Warsaw, Poland
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Abstract
The purpose of the present study was to test the hypothesis that large increases in blood lactate concentration ([La] (b)) and/or body temperature may occur during an endurance training on a rowing ergometer and disrupt training. The influence of an increase in air convection on the capacity to perform a prolonged exercise was also explored. Ten trained oarsmen were asked to undergo twice, in control (C) and increased air ventilation (AV) conditions, two 30-min trainings on a rowing ergometer at a work rate corresponding to 2.5 mmol . L (-1) of [La] (b) determined during a previous incremental exercise (P (2.5)). Four subjects did not complete the training session in C despite a steady state in [La] (b) in two of them. In these four subjects, the end of the exercise was associated with the highest measured rectal temperatures (T (re), 39.4 +/- 0.1 degrees C) and rate of perceived exertion (RPE, 17.8 +/- 0.3). Regarding the six other subjects, their heart rate, oxygen uptake, RPE, T (re) and water loss values were lower (p < 0.05) in AV than in C. [La] (b) displayed the same profile in C and AV. This study suggests that i) high body temperature may constitute a significant factor of perceived exertion and disrupt indoor training session, and ii) capacity to perform an endurance training on a rowing ergometer was improved by increasing air convection.
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Affiliation(s)
- H Maciejewski
- Laboratory of Biomechanics and Human Modelling, Faculty of Medicine Lyon-Sud, Oullins cedex, France.
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