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Baena-Raya A, Díez-Fernández DM, Martínez-Rubio C, Conceição F, López-Sagarra A. Kinetic and Kinematic Characteristics Underpinning Change of Direction Performance in Basketball: A Comparative Study Between Sexes and Tests. J Strength Cond Res 2024; 38:e182-e188. [PMID: 38300789 DOI: 10.1519/jsc.0000000000004693] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
ABSTRACT Baena-Raya, A, Díez-Fernández, DM, Martínez-Rubio, C, Conceição, F, and López-Sagarra, A. Kinetic and kinematic characteristics underpinning change of direction performance in basketball: A comparative study between sexes and tests. J Strength Cond Res 38(4): e182-e188, 2024-This study (a) evaluated the sex-specific kinetic and kinematic outcomes underpinning change of direction (COD) performance, (b) compared these outcomes across 3 different COD tests, and (c) examined the sex-specific and test-specific outcome most strongly related to COD performance in basketball players. Thirty young basketball players (17 males and 13 females) competing at the national level were assessed for the modified 505 test, modified T test, and V-cut test. The Local Positioning System technology (WIMU PRO, Realtrack Systems S.L., Almería, Spain) was used to measure the maximum values of acceleration (ACC max ), deceleration (DEC max ), velocity (VEL max ), and centripetal force (CentF max ) in each COD test. Male players displayed greater ACC max , VEL max , DEC max , and CentF max outputs for each section of the 505 test, T test, and V-cut test (all p < 0.05), resulting in a faster COD performance than females across tests (all ES > -1.42; 95% CI = -3.45 to -0.57). The 505 test demanded significantly greater kinematic outputs than T test and V-cut test for both sexes ( p < 0.01). The ACC max explained ∼26-58% of the variability in COD time for males across tests ( p < 0.05) and 40% in females' modified 505-test time ( p < 0.05). Likewise, in females, DEC max explained 38% of the modified T -test time variability, whereas VEL max explained 53% in the V-cut test time (both p < 0.05). These findings suggest that (a) COD data should not be used interchangeably across sexes, (b) test specificities should be considered for designing COD training, and (c) the kinematic outcomes explaining COD performance might vary across sexes.
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Affiliation(s)
- Andrés Baena-Raya
- Department of Education, Faculty of Education Sciences, University of Almería, Almería, Spain
- SPORT Research Group (CTS-1024), CERNEP Research Center, University of Almería, Almería, Spain
| | - David M Díez-Fernández
- Department of Education, Faculty of Education Sciences, University of Almería, Almería, Spain
- SPORT Research Group (CTS-1024), CERNEP Research Center, University of Almería, Almería, Spain
| | - Carlos Martínez-Rubio
- SPORT Research Group (CTS-1024), CERNEP Research Center, University of Almería, Almería, Spain
| | - Filipe Conceição
- Center of Research, Education, Innovation and Intervention in Sport, Faculty of Sports, University of Porto, Porto, Portugal; and
- LABIOMEP-Porto Biomechanics Laboratory, University of Porto, Porto, Portugal
| | - Andrés López-Sagarra
- SPORT Research Group (CTS-1024), CERNEP Research Center, University of Almería, Almería, Spain
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Ribeiro MTS, Conceição F, Pacheco MM. Proficiency Barrier in Track and Field: Adaptation and Generalization Processes. Sensors (Basel) 2024; 24:1000. [PMID: 38339717 PMCID: PMC10857757 DOI: 10.3390/s24031000] [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] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 01/22/2024] [Accepted: 02/02/2024] [Indexed: 02/12/2024]
Abstract
The literature on motor development and training assumes a hierarchy for learning skills-learning the "fundamentals"-that has yet to be empirically demonstrated. The present study addressed this issue by verifying (1) whether this strong hierarchy (i.e., the proficiency barrier) holds between three fundamental skills and three sport skills and (2) considering different transfer processes (generalization/adaptation) that would occur as a result of the existence of this strong hierarchy. Twenty-seven children/adolescents participated in performing the countermovement jump, standing long jump, leap, high jump, long jump, and hurdle transposition. We identified the proficiency barrier in two pairs of tasks (between the countermovement jump and high jump and between the standing long jump and long jump). Nonetheless, the transfer processes were not related to the proficiency barrier. We conclude that the proposed learning hierarchy holds for some tasks. The underlying reason for this is still unknown.
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Affiliation(s)
- M. Teresa S. Ribeiro
- Research Center in Sport Sciences, Health and Human Development (CIDESD), Physical Education and Sport Sciences Department, University of Maia, 4475-690 Maia, Portugal;
- Center for Investigation, Formation, Innovation and Intervention in Sports, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal;
| | - Filipe Conceição
- Center for Investigation, Formation, Innovation and Intervention in Sports, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal;
| | - Matheus M. Pacheco
- Center for Investigation, Formation, Innovation and Intervention in Sports, Faculty of Sport, University of Porto, 4200-450 Porto, Portugal;
- GEDEM, Department of Physical Education, Federal University of Rondônia, Porto Velho 78900-000, Brazil
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3
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Akl AR, Conceição F, Richards J. An exploration of muscle co-activation during different walking speeds and the association with lower limb joint stiffness. J Biomech 2023; 157:111715. [PMID: 37423119 DOI: 10.1016/j.jbiomech.2023.111715] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 06/28/2023] [Accepted: 07/03/2023] [Indexed: 07/11/2023]
Abstract
The aim of this study was to determine the muscle co-activations and joint stiffnesses around the hip, knee, and ankle during different walking speeds and to define the relationships between muscle co-activation and joint stiffness. Twenty-seven healthy subjects (age: 19.6 ± 2.2 years, height: 176.0 ± 6.0 cm, mass: 69.7 ± 8.9 kg) were recruited. Muscle co-activations (CoI) and lower limb joints stiffnesses were investigated during stance phase at different walking speeds using Repeated Measures ANOVA with Sidak post-hoc tests. Correlations between muscle co-activations, joints stiffnesses, and walking speeds were also investigated using Pearson Product Moment correlations. The results indicated that the hip and ankle joints stiffness increased with walking speed (p < 0.001) during the weight acceptance phase, and positive correlations were seen between walking speed and Rectus Femoris (RF) and Biceps Femoris (BF) CoI (p < 0.001), and a negative correlation was seen between walking speed and tibialis anterior (TA) and lateral gastrocnemius (LG) CoI (p < 0.001) during the weight acceptance phase, and the RF/BF CoI during pre-swing. These results provide new information on the variations in muscle co-activation around the hip, knee and ankle joints and their association with joint stiffness, and on the responses of stiffness and muscle co-activation to walking speed. The techniques presented could have further application and help our understanding of the effects of gait retraining and injury mechanisms.
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Affiliation(s)
- Abdel-Rahman Akl
- Faculty of Physical Education (Abo Qir), Alexandria University, Abo Qir, 21913 Alexandria, Egypt; Porto Biomechanics Laboratory (LABIOMEP), Rua Dr. Placido ́ Costa, 91, 4200-450 Porto, Portugal.
| | - Filipe Conceição
- Porto Biomechanics Laboratory (LABIOMEP), Rua Dr. Placido ́ Costa, 91, 4200-450 Porto, Portugal; Center of Research, Education, Innovation and Intervention in Sport (CIFI2D), Faculty of Sport, University of Porto, Rua Dr. Placido ́ Costa, 91, 4200-450 Porto, Portugal
| | - Jim Richards
- Allied Health Research Unit, University of Central Lancashire, Preston, UK
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Leite I, Fonseca P, Ávila-Carvalho L, Vilas-Boas JP, Goethel M, Mochizuki L, Conceição F. THE STATE OF THE ART IN ACROBATIC GYMNASTICS: A BIBLIOMETRIC ANALYSIS. SGJ 2023. [DOI: 10.52165/sgj.15.1.47-63] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
Since acrobatic gymnastics is a recent gymnastics discipline, with only a few decades old, with only a few decades old, it is not yet much explored as a scientific research field. Despite its increasing popularity, and while science mapping has become an essential activity for all scientific disciplines, no bibliometric analysis on this topic was available. Therefore, this study aims to provide a static picture of the scientific research development in acrobatic gymnastics by collecting information about the main contributors as well as the main investigation topics, the publication dynamics and cooperative networks. A search conducted in the Web of Science and Scopus databases retrieved 37 journal articles between 2001-2021. Results suggest that the year of 2015 was a milestone for scientific research in acrobatic gymnastics since it marked the beginning of the dominance of authors from Spain, followed by Poland and Portugal. Countries are generally focused on their own territory and there is a limited scientific collaboration between different nations. The Spanish and the Polish research institutions are leading publishing in this sport. As a reference for future studies, our results suggest that although balance was identified as the niche investigation topic, there has been a lack of interest for the pyramids balance, which is a major feature of acrobatic gymnastics.
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Pereira PM, Baptista JS, Conceição F, Duarte J, Ferraz J, Costa JT. Patellofemoral Pain Syndrome Risk Associated with Squats: A Systematic Review. IJERPH 2022; 19:ijerph19159241. [PMID: 35954598 PMCID: PMC9367913 DOI: 10.3390/ijerph19159241] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/10/2022] [Accepted: 07/25/2022] [Indexed: 11/16/2022]
Abstract
Patellofemoral pain syndrome (PFPS) is highly prevalent; it can cause severe pain and evolve into progressive functional loss, leading to difficulties performing daily tasks such as climbing and descending stairs and squatting. This systematic review aimed to find evidence, in the literature, of squat movements that can cause or worsen PFPS. This work was based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) statement, and its protocol was registered in PROSPERO (CRD42019128711). From the 6570 collected records, 37 were included. From these 37 articles, 27 present a causal relationship between knee flexion and PFPS, 8 describe a relationship, considering the greater existence of muscle contractions, and one article did not describe this relationship in its results. The main limitations stem from the fact that different studies used different evaluation parameters to compare the force exerted on the patellofemoral joint. Furthermore, most studies are focused on sports populations. After analysing the included works, it was concluded that all squat exercises can cause tension overload in the knee, especially with a knee flexion between 60° and 90° degrees. The main causal/worsening factors of PFPS symptoms are the knee translocation forward the toes (on the same body side) when flexing the knee, and the muscle imbalance between the thigh muscles.
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Affiliation(s)
- Pablo Monteiro Pereira
- Associated Laboratory for Energy, Transports and Aeronautics (PROA/LAETA), Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal; (P.M.P.); (J.D.); (J.F.)
| | - João Santos Baptista
- Associated Laboratory for Energy, Transports and Aeronautics (PROA/LAETA), Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal; (P.M.P.); (J.D.); (J.F.)
- Correspondence:
| | - Filipe Conceição
- Center for Research, Education, Innovation and Intervention in Sport (CIFI2D/LABIOMEP), Faculty of Sports, University of Porto, 4200-450 Porto, Portugal;
| | - Joana Duarte
- Associated Laboratory for Energy, Transports and Aeronautics (PROA/LAETA), Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal; (P.M.P.); (J.D.); (J.F.)
| | - João Ferraz
- Associated Laboratory for Energy, Transports and Aeronautics (PROA/LAETA), Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal; (P.M.P.); (J.D.); (J.F.)
| | - José Torres Costa
- Associated Laboratory for Energy, Transports and Aeronautics (PROA/LAETA), Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal;
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Garcês Soares S, Medas R, Conceição F, Silva R, Paiva JA, Carneiro AC. Hepatic Glycogenosis: An Underdiagnosed Entity? Cureus 2022; 14:e23853. [PMID: 35530830 PMCID: PMC9072257 DOI: 10.7759/cureus.23853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/05/2022] [Indexed: 11/12/2022] Open
Abstract
Hepatic glycogenosis (HG) is a rare complication of long-standing poorly controlled type 1 diabetes mellitus (T1DM), which is often misdiagnosed as non-alcoholic fatty liver disease (NAFLD). Despite the existence of several reports in the literature, it still is underrecognized, even among gastroenterologists. Differential diagnosis between these entities is essential since they have different prognoses. We report a case of an 18-year-old female, with a medical history of poorly controlled T1DM, admitted to an intensive care unit with severe diabetic ketoacidosis (DKA). Upon admission, aminotransferases were significantly elevated; bilirubin and coagulation tests were normal. Despite adequate DKA treatment, she had persistently elevated aminotransferases and hyperlactacidemia. Imaging studies showed hepatomegaly and bright liver parenchyma. Extensive laboratory workup was negative for other causes of liver disease. So, a liver biopsy was performed, which was consistent with the diagnosis of HG. Under strict metabolic control, she had progressive improvement, achieving biochemical normalization within 6 months. This case highlights the need for clinicians to be aware of this condition due to non-negligible differences between HG and NAFLD, with the latter progressing to fibrosis, and ultimately cirrhosis and hepatocarcinoma. On the opposite, HG is considered a benign condition, associated with an excellent prognosis that can be reversible after adequate metabolic control. Liver biopsy remains the gold standard method for HG diagnosis since it can distinguish it from NAFLD.
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Ávila-Carvalho L, Conceição F, Escobar-Álvarez JA, Gondra B, Leite I, Rama L. The Effect of 16 Weeks of Lower-Limb Strength Training in Jumping Performance of Ballet Dancers. Front Physiol 2022; 12:774327. [PMID: 35095553 PMCID: PMC8790119 DOI: 10.3389/fphys.2021.774327] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 12/13/2021] [Indexed: 11/13/2022] Open
Abstract
Jumping ability is considered a determinant of performance success. It is identified as one of the predictors and talent identification in many sports and dance. This study aimed to investigate the effect of 16 weeks of lower-limb strength training on the jumping performance of ballet dancers. A total of 24 participants from the same dance school were randomly selected in the control group [CG; n = 10; aged 13.00 (1.49) years; 43.09 (9.48) kg and 1.53 (0.11) m] and the intervention group [IG; n = 14; aged 12.43 (1.45) years; 38.21 (4.38) kg and 1.51 (0.07) m], evaluated before and after the applied strength training program mainly using the body weight of each participant. Jump performance was assessed using MyJump2, a scientifically validated mobile phone app. Intergroup and intragroup comparisons were assessed, and the magnitude of change was calculated using the effect size (ES). While CG significantly decreased the relative power over time (p < 0.001, ES = −0.29: small), results from the intragroup comparisons suggest that IG significantly increased the countermovement jump (CMJ) height (p < 0.001, ES = 1.21: large), the relative force (p < 0.001, ES = 0.86: moderate), maximal velocity (p < 0.001, ES = 1.15: moderate), and relative power (p < 0.001, ES = 1.37: large). We concluded that a 16-week strength training program of lower limbs is an effective way to improve CMJ height in young dancers. Supplementary strength training appears to be the determinant for the improvement of the jumping performance of ballet dancers.
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Affiliation(s)
- Lurdes Ávila-Carvalho
- Faculty of Sports Science and Physical Education, University of Coimbra, Coimbra, Portugal
- Faculty of Sport, Center of Research, Education, Innovation and Intervention in Sport (CIFI2D), University of Porto, Porto, Portugal
- *Correspondence: Lurdes Ávila-Carvalho,
| | - Filipe Conceição
- Faculty of Sport, Center of Research, Education, Innovation and Intervention in Sport (CIFI2D), University of Porto, Porto, Portugal
- LABIOMEP, Porto Biomechanics Laboratory, University of Porto, Porto, Portugal
| | - Juan A. Escobar-Álvarez
- Faculty of Sport, Center of Research, Education, Innovation and Intervention in Sport (CIFI2D), University of Porto, Porto, Portugal
- School of Health and Life Sciences, University of the West of Scotland, Ayr, United Kingdom
| | - Beatriz Gondra
- Faculty of Sport, Center of Research, Education, Innovation and Intervention in Sport (CIFI2D), University of Porto, Porto, Portugal
| | - Isaura Leite
- Faculty of Sport, Center of Research, Education, Innovation and Intervention in Sport (CIFI2D), University of Porto, Porto, Portugal
| | - Luís Rama
- Faculty of Sports Science and Physical Education, University of Coimbra, Coimbra, Portugal
- Research Center for Sport and Physical Activity (CIDAF), Faculty of Sports Science and Physical Education, University of Coimbra, Coimbra, Portugal
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Fowler M, Van Klinken M, Conceição F, Crombez P, Hálfdánardóttir H. CN30 Development of an advocacy accreditation system for cancer nurses. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Santos JA, Affonso HO, Boullosa D, Pereira TMC, Fernandes RJ, Conceição F. Extreme blood lactate rising after very short efforts in top-level track and field male sprinters. Res Sports Med 2021; 30:566-572. [PMID: 33879003 DOI: 10.1080/15438627.2021.1917406] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Two top-level (10"04 and 10"13 in 100-m dash) and 2 sub-elite (10"97 and 11"44 in 100-m dash) male sprinters completed, after a standardised warm-up, various jump, sprint and weightlifting exercises in two consecutive days at the start of pre-season. Before and 30 s after the tests, the [La-] were measured with a portable lactate analyser. The top-level sprinters exhibited much larger [La-] than the sub-elite sprinters (< 5 mmol·L-1) after all the exercise tests. The maximum values recorded were 20.4 mmol·L-1 after the 20-m sprint tests for Athlete 1, and 22.4 mmol·L-1 after CMJ testing for Athlete 2. The greater Δ% were recorded after CMJ testing for Athlete 1 (from 1.9 to 13.6 mmol·L-1), and after the power clean test for Athlete 2 (from 1.4 to 17.6 mmol·L-1). These results suggest a different metabolic response to very short efforts (≤3 s) in top-level track and field sprinters. These findings reinforce the need to include lactate assessments, during training and evaluation sessions, to better understand the acute and chronic adaptations to training of sprinters of different levels.
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Affiliation(s)
- José A Santos
- Centre of Research, Education, Innovation and Intervention in Sport (CIFI2D) and Faculty of Sport, University of Porto, Porto, Portugal
| | - Hélvio O Affonso
- Pharmaceutical Sciences Graduate Program, Vila Velha University (UVV), Vila Velha, Brazil.,Physiology, Laboratory of Exercise, Nutrition and Sports Training, Vitoria, Brazil
| | - Daniel Boullosa
- INISA, Federal University of Mato Grosso do Sul, Campo Grande, Brazil.,Sport and Exercise Science, James Cook University, Townsville, Australia
| | - Thiago M C Pereira
- Pharmaceutical Sciences Graduate Program, Vila Velha University (UVV), Vila Velha, Brazil.,Federal Institute of Education, Science and Technology (IFES), Vila Velha, Brazil.,Pharmacology of Chronic Diseases (CDPHARMA), Molecular Medicine and Chronic Diseases Research Centre (CIMUS), University of Santiago De Compostela, Santiago de Compostela, Spain
| | - Ricardo J Fernandes
- Centre of Research, Education, Innovation and Intervention in Sport (CIFI2D) and Faculty of Sport, University of Porto, Porto, Portugal.,Porto Biomechanics Laboratory (LABIOMEP), University of Porto, Porto, Portugal
| | - Filipe Conceição
- Centre of Research, Education, Innovation and Intervention in Sport (CIFI2D) and Faculty of Sport, University of Porto, Porto, Portugal.,Porto Biomechanics Laboratory (LABIOMEP), University of Porto, Porto, Portugal
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Linhares D, Fonseca JA, Ribeiro da Silva M, Conceição F, Sousa A, Sousa-Pinto B, Neves N. Cost effectiveness of outpatient lumbar discectomy. Cost Eff Resour Alloc 2021; 19:19. [PMID: 33771175 PMCID: PMC8004396 DOI: 10.1186/s12962-021-00272-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 01/25/2021] [Accepted: 03/09/2021] [Indexed: 01/07/2023] Open
Abstract
Background Microdiscectomy is the most commonly performed spine surgery and the first transitioning for outpatient settings. However, this transition was never studied, in what comes to cost-utility assessment. Accordingly, this economic study aims to access the cost-effectiveness of outpatient lumbar microdiscectomy when compared with the inpatient procedure. Methods This is a cost utility study, adopting the hospital perspective. Direct medical costs were retrieved from the assessment of 20 patients undergoing outpatient lumbar microdiscectomy and 20 undergoing inpatient lumbar microdiscectomy Quality-adjusted life-years were calculated from Oswestry Disability Index values (ODI). ODI was prospectively assessed in outpatients in pre and 3- and 6-month post-operative evaluations. Inpatient ODI data were estimated from a meta-analysis. A probabilistic sensitivity analysis was performed and incremental cost-effectiveness ratio (ICER) calculated. Results Outpatient procedure was cost-saving in all models tested. At 3-month assessment ICER ranged from €135,753 to €345,755/QALY, higher than the predefined threshold of €60,000/QALY gained. At 6-month costs were lower and utilities were higher in outpatient, overpowering the inpatient procedure. Probabilistic sensitivity analysis showed that in 65% to 73% of simulations outpatient was the better option. The savings with outpatient were about 55% of inpatient values, with similar utility scores. No 30-day readmissions were recorded in either group. Conclusion This is the first economic study on cost-effectiveness of outpatient lumbar microdiscectomy, showing a significant reduction in costs, with a similar clinical outcome, proving it cost-effective. Supplementary Information The online version contains supplementary material available at 10.1186/s12962-021-00272-w.
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Affiliation(s)
- Daniela Linhares
- Orthopedics Department, Centro Hospitalar e Universitário de São João, Porto, Portugal. .,MEDCIDS - Department of Community Medicine, Information and Health Decision Sciences, Faculty of Medicine, University of Porto, Porto, Portugal. .,CINTESIS, Center for Research in Health Technology and Information Systems, Faculty of Medicine, University of Porto, Porto, Portugal.
| | - João A Fonseca
- MEDCIDS - Department of Community Medicine, Information and Health Decision Sciences, Faculty of Medicine, University of Porto, Porto, Portugal.,CINTESIS, Center for Research in Health Technology and Information Systems, Faculty of Medicine, University of Porto, Porto, Portugal.,CUF Porto Hospital, Porto, Portugal
| | - Manuel Ribeiro da Silva
- Orthopedics Department, Centro Hospitalar e Universitário de São João, Porto, Portugal.,CUF Porto Hospital, Porto, Portugal.,i3S - Instituto de Investigação e Inovação Em Saúde, University of Porto, Porto, Portugal.,INEB - Instituto Nacional de Engenharia Biomédica, University of Porto, Porto, Portugal
| | - Filipe Conceição
- Surgery Unit, Centro Hospitalar E Universitário de São João, Porto, Portugal
| | - António Sousa
- Orthopedics Department, Centro Hospitalar e Universitário de São João, Porto, Portugal.,CUF Porto Hospital, Porto, Portugal
| | - Bernardo Sousa-Pinto
- MEDCIDS - Department of Community Medicine, Information and Health Decision Sciences, Faculty of Medicine, University of Porto, Porto, Portugal.,CINTESIS, Center for Research in Health Technology and Information Systems, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Nuno Neves
- Orthopedics Department, Centro Hospitalar e Universitário de São João, Porto, Portugal.,CUF Porto Hospital, Porto, Portugal.,i3S - Instituto de Investigação e Inovação Em Saúde, University of Porto, Porto, Portugal.,INEB - Instituto Nacional de Engenharia Biomédica, University of Porto, Porto, Portugal.,Surgery and Physiology Department, Faculty of Medicine, University of Porto, Porto, Portugal
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Baena-Raya A, Soriano-Maldonado A, Conceição F, Jiménez-Reyes P, Rodríguez-Pérez MA. Association of the vertical and horizontal force-velocity profile and acceleration with change of direction ability in various sports. Eur J Sport Sci 2021; 21:1659-1667. [PMID: 33241736 DOI: 10.1080/17461391.2020.1856934] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
This study aimed to assess the association of the mechanical variables derived from the force-velocity (FV) profile (i.e. theoretical maximal force [F0], velocity [V0] and maximal power output [Pmax]) with change of direction (COD) performance in soccer, basketball and tennis players. Fifty-four male athletes (soccer n = 23; tennis n = 16; basketball n = 15) were assessed for the vertical (Vrt) and horizontal (Hzt) FV profiles, COD with the dominant (D) and nondominant (ND) legs, using the modified 505 test, and sprint. Hzt FV profile parameters showed stronger associations with performance than Vrt FV profile in the three sports. Specifically, the Hzt parameter most strongly associated with COD performance was F0 in tennis (r = -0.83; p<0.001) and Pmax in soccer and basketball (r = -0.79; p<0.001). Associations between sprint times and COD test ranged from (r = 0.73-0.82) in soccer players, (r = 0.74-0.87) in tennis players and (r = 0.62-0.85) in basketball players, respectively (p<0.05). Considering the whole sample and the random effect of the type of sports, an improvement in sprint acceleration (i.e. one N/kg increase in F0 and one W/kg in Pmax) was associated with -0.15 s and -0.04 s to complete the 505 test, respectively. In conclusion, our results suggest the potential usefulness of assessing the Hzt FV profile to maximize acceleration capabilities through training interventions which, in turn, may translate into improved COD performance. However, further longitudinal and experimental research is needed to confirm this hypothesis.
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Affiliation(s)
- Andrés Baena-Raya
- Department of Education, Faculty of Education Sciences, University of Almería, Almería, Spain.,SPORT Research Group (CTS-1024), CERNEP Research Center, University of Almería, Almería, Spain
| | - Alberto Soriano-Maldonado
- Department of Education, Faculty of Education Sciences, University of Almería, Almería, Spain.,SPORT Research Group (CTS-1024), CERNEP Research Center, University of Almería, Almería, Spain
| | - Filipe Conceição
- Faculty of Sports, Centre of Research, Education, Innovation and Intervention in Sport, University of Porto, Porto, Portugal.,LABIOMEP-Porto Biomechanics Laboratory, University of Porto, Porto, Portugal
| | | | - Manuel A Rodríguez-Pérez
- Department of Education, Faculty of Education Sciences, University of Almería, Almería, Spain.,SPORT Research Group (CTS-1024), CERNEP Research Center, University of Almería, Almería, Spain
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12
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Moura J, Baylina P, Logarinho J, Conceição F, Simão RS, Alves C. Exploring direct costs of primary hip and knee arthroplasties healthcare-associated infections: A retrospective study. International Journal of Healthcare Management 2020. [DOI: 10.1080/20479700.2018.1531607] [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: 10/28/2022]
Affiliation(s)
- João Moura
- Associação de Politécnicos do Norte, Instituto Politécnico do Porto, Porto, Portugal
| | - Pilar Baylina
- Escola Superior de Saúde do Porto, Instituto Politécnico do Porto, Porto, Portugal
| | - João Logarinho
- UAG Cirurgia, Centro Hospitalar de São João EPE, Porto, Portugal
| | - Filipe Conceição
- UAG Cirurgia, Centro Hospitalar de São João EPE, Porto, Portugal
| | - Ricardo São Simão
- Serviço de Ortopedia, Centro Hospitalar de São João EPE, Porto, Portugal
| | - Carlos Alves
- Unidade de Prevenção e Controlo de Infeção e Resistências aos Antimicrobianos, Centro Hospitalar de São João EPE, Porto, Portugal
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13
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Akl AR, Baca A, Richards J, Conceição F. Leg and lower limb dynamic joint stiffness during different walking speeds in healthy adults. Gait Posture 2020; 82:294-300. [PMID: 33007686 DOI: 10.1016/j.gaitpost.2020.09.023] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 10/06/2019] [Revised: 09/03/2020] [Accepted: 09/23/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND The differences and relationship between joint stiffness and leg stiffness can be used to characterize the lower limb behavior during different walking speeds. RESEARCH QUESTION This study aimed to investigate the differences in whole leg and lower limb joint stiffness at different walking speeds and the interactions between leg and lower limb joint stiffness. METHODS Twenty-seven healthy adults, seventeen males (age: 19.6 ± 2.2 years, height: 176.0 ± 6.0 cm, mass: 69.7 ± 8.9 kg), and ten females (age: 19.1 ± 1.9 years, height: 164.0 ± 3.0 cm, mass: 59.6 ± 3.8 kg), were recruited. Dynamic leg and joint stiffness were calculated during eccentric loading from data recorded using 3D infrared motion analysis and force plates at slow, normal, and fast walking speeds. Differences in dynamic stiffness, joint angles and moments were explored between the walking speeds using Repeated Measures ANOVA with Sidak post-hoc tests. Correlations between leg, joint stiffness, and walking speed were also explored. RESULTS The results indicated that the leg dynamic stiffness is decreased by walking speed, however, hip and ankle joint stiffness were increased (p < 0.001) and knee stiffness was unaffected. Leg stiffness showed no correlation with hip, knee, or ankle stiffness. A positive significant correlation was seen between hip and ankle stiffness (p < 0.01) and between knee and ankle stiffness (p < 0.001), however, no correlation was seen between hip and knee stiffness. SIGNIFICANCE These results suggest leg stiffness is not associated with lower limb joint stiffness during eccentric loading. This provides new information on the responses of ankle, knee and hip joint stiffness to walking speed.
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Affiliation(s)
- Abdel-Rahman Akl
- Faculty of Physical Education (Abo Qir), Alexandria University, Abo Qir, 21913, Alexandria, Egypt; Porto Biomechanics Laboratory (LABIOMEP), Rua Dr. Plácido Costa, 91, 4200-450, Porto, Portugal; University of Vienna, Department of Biomechanics, Kinesiology and Applied Computer Science, Austria.
| | - Arnold Baca
- University of Vienna, Department of Biomechanics, Kinesiology and Applied Computer Science, Austria
| | - Jim Richards
- Allied Health Research Unit, University of Central Lancashire, Preston, UK
| | - Filipe Conceição
- Porto Biomechanics Laboratory (LABIOMEP), Rua Dr. Plácido Costa, 91, 4200-450, Porto, Portugal; Center of Research, Education, Innovation and Intervention in Sport (CIFI2D), Faculty of Sport, University of Porto, Rua Dr. Plácido Costa, 91, 4200-450, Porto, Portugal
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14
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Alves CJ, Couto M, Sousa DM, Magalhães A, Neto E, Leitão L, Conceição F, Monteiro AC, Ribeiro-da-Silva M, Lamghari M. Nociceptive mechanisms driving pain in a post-traumatic osteoarthritis mouse model. Sci Rep 2020; 10:15271. [PMID: 32943744 PMCID: PMC7499425 DOI: 10.1038/s41598-020-72227-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [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: 02/19/2020] [Accepted: 08/20/2020] [Indexed: 11/29/2022] Open
Abstract
In osteoarthritis (OA), pain is the dominant clinical symptom, yet the therapeutic approaches remain inadequate. The knowledge of the nociceptive mechanisms in OA, which will allow to develop effective therapies for OA pain, is of utmost need. In this study, we investigated the nociceptive mechanisms involved in post-traumatic OA pain, using the destabilization of the medial meniscus (DMM) mouse model. Our results revealed the development of peripheral pain sensitization, reflected by augmented mechanical allodynia. Along with the development of pain behaviour, we observed an increase in the expression of calcitonin gene-related peptide (CGRP) in both the sensory nerve fibers of the periosteum and the dorsal root ganglia. Interestingly, we also observed that other nociceptive mechanisms commonly described in non-traumatic OA phenotypes, such as infiltration of the synovium by immune cells, neuropathic mechanisms and also central sensitization were not present. Overall, our results suggest that CGRP in the sensory nervous system is underlying the peripheral sensitization observed after traumatic knee injury in the DMM model, highlighting the CGRP as a putative therapeutic target to treat pain in post-traumatic OA. Moreover, our findings suggest that the nociceptive mechanisms involved in driving pain in post-traumatic OA are considerably different from those in non-traumatic OA.
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Affiliation(s)
- C J Alves
- Neuro-Skeletal Circuits Group, Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal. .,Instituto de Engenharia Biomédica (INEB), Universidade do Porto, Porto, Portugal.
| | - M Couto
- Neuro-Skeletal Circuits Group, Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,Instituto de Engenharia Biomédica (INEB), Universidade do Porto, Porto, Portugal
| | - D M Sousa
- Neuro-Skeletal Circuits Group, Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,Instituto de Engenharia Biomédica (INEB), Universidade do Porto, Porto, Portugal
| | - A Magalhães
- Neuro-Skeletal Circuits Group, Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,Instituto de Biologia Molecular e Celular (IBMC), Universidade do Porto, Porto, Portugal
| | - E Neto
- Neuro-Skeletal Circuits Group, Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,Instituto de Engenharia Biomédica (INEB), Universidade do Porto, Porto, Portugal
| | - L Leitão
- Neuro-Skeletal Circuits Group, Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,Instituto de Engenharia Biomédica (INEB), Universidade do Porto, Porto, Portugal.,Instituto Ciências Biomédicas Abel Salazar (ICBAS), Universidade de Porto, Porto, Portugal
| | - F Conceição
- Neuro-Skeletal Circuits Group, Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,Instituto de Engenharia Biomédica (INEB), Universidade do Porto, Porto, Portugal.,Instituto Ciências Biomédicas Abel Salazar (ICBAS), Universidade de Porto, Porto, Portugal
| | - A C Monteiro
- Neuro-Skeletal Circuits Group, Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,Instituto de Engenharia Biomédica (INEB), Universidade do Porto, Porto, Portugal
| | - M Ribeiro-da-Silva
- Neuro-Skeletal Circuits Group, Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,Instituto de Engenharia Biomédica (INEB), Universidade do Porto, Porto, Portugal.,Faculdade de Medicina, Universidade do Porto (FMUP), Porto, Portugal.,Serviço de Ortopedia e Traumatologia, Centro Hospitalar São João, Porto, Portugal
| | - M Lamghari
- Neuro-Skeletal Circuits Group, Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Rua Alfredo Allen, 208, 4200-135, Porto, Portugal.,Instituto de Engenharia Biomédica (INEB), Universidade do Porto, Porto, Portugal.,Instituto Ciências Biomédicas Abel Salazar (ICBAS), Universidade de Porto, Porto, Portugal
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15
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Gomes BB, Ramos NV, Conceição F, Sanders R, Vaz M, Vilas-Boas JP. Paddling time parameters and paddling efficiency with the increase in stroke rate in kayaking. Sports Biomech 2020; 21:1303-1311. [DOI: 10.1080/14763141.2020.1789204] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Beatriz B. Gomes
- Research Unit for Sport and Physical Activity, Faculty of Sport Sciences and Physical Education, University of Coimbra, Coimbra, Portugal
| | - Nuno V. Ramos
- Faculty of Engineering, Institute of Science and Innovation in Mechanical and Industrial Engineering, Porto Biomechanics Laboratory, University of Porto, Porto, Portugal
| | - Filipe Conceição
- Faculty of Sports, Centre of Research, Education, Innovation and Intervention in Sport, Porto Biomechanics Laboratory, University of Porto, Porto, Portugal
| | - Ross Sanders
- Exercise and Sport Science, Faculty of Health Sciences, The University of Sydney, Sydney, Australia
| | - Mário Vaz
- Faculty of Engineering, Institute of Science and Innovation in Mechanical and Industrial Engineering, Porto Biomechanics Laboratory, University of Porto, Porto, Portugal
| | - João Paulo Vilas-Boas
- Faculty of Sports, Centre of Research, Education, Innovation and Intervention in Sport, Porto Biomechanics Laboratory, University of Porto, Porto, Portugal
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16
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Escobar Álvarez JA, Reyes PJ, Pérez Sousa MÁ, Conceição F, Fuentes García JP. Analysis of the Force-Velocity Profile in Female Ballet Dancers. J Dance Med Sci 2020; 24:59-65. [PMID: 32456760 DOI: 10.12678/1089-313x.24.2.59] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Jumping ability has been identified as one of the best predictors of dance performance. The latest findings in strength and conditioning research suggest that the relationship between force and velocity mechanical capabilities, known as the force-velocity profile, is a relevant parameter for the assessment of jumping ability. In addition, previous investigations have suggested the existence of an optimal force-velocity profile for each individual that maximizes jump performance. Given the abundance of ballistic actions in ballet (e.g., jumps and changes of direction), quantification of the mechanical variables of the force-velocity profile could be beneficial for dancers as a guide to specific training regimens that can result in improvement of either maximal force or velocity capabilities. The aim of this study was to compare the mechanical variables of the force-velocity profile during jumping in different company ranks of ballet dancers. Eighty-seven female professional ballet dancers (age: 18.94 ± 1.32 years; height: 164.41 ± 8.20 cm; weight: 56.3 ± 5.86 kg) showed high force deficits (> 40%) or low force deficits (10% to 40%) regardless of their company rank. Our results suggest that dance training mainly develops velocity capabilities, and due to the high number of dramatic elevations that dance performance requires, supplemental individualized force training may be beneficial for dancers. The individualization of training programs addressed to the direction of each individual's imbalance (high force or low force) could help dancers and their teachers to improve jump height and therefore dance performance.
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Affiliation(s)
| | | | - Miguel Ángel Pérez Sousa
- Faculty of Education, Psychology and Sport Science, University of Huelva, Huelva, Spain; and Faculty of Sport Science, University of Extremadura, Cáceres, Spain
| | - Filipe Conceição
- LABIOMEP, Porto Biomechanics, Laboratory, University of Porto, Porto, Portugal
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17
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Mendiguchia J, Conceição F, Edouard P, Fonseca M, Pereira R, Lopes H, Morin JB, Jiménez-Reyes P. Sprint versus isolated eccentric training: Comparative effects on hamstring architecture and performance in soccer players. PLoS One 2020; 15:e0228283. [PMID: 32045411 PMCID: PMC7012429 DOI: 10.1371/journal.pone.0228283] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Accepted: 01/10/2020] [Indexed: 01/22/2023] Open
Abstract
AIMS The purpose of this study was to compare the effects of hamstring eccentric (NHE) strength training versus sprint training programmed as complements to regular soccer practice, on sprint performance and its mechanical underpinnings, as well as biceps femoris long head (BFlh) architecture. METHODS In this prospective interventional control study, sprint performance, sprint mechanics and BFlh architecture variables were compared before versus after six weeks of training during the first six preseason weeks, and between three different random match-pair groups of soccer players: "Soccer group" (n = 10), "Nordic group" (n = 12) and "Sprint group" (n = 10). RESULTS For sprint performance and mechanics, small to large pre-post improvements were reported in "Sprint group" (except maximal running velocity), whereas only trivial to small negative changes were reported in "Soccer group" and "Nordic group". For BFlh architecture variables, "Sprint" group showed moderate increase in fascicle length compared to smaller augment for the "Nordic" group with trivial changes for "Soccer group". Only "Nordic" group presented small increases at pennation angle. CONCLUSIONS The results suggest that sprint training was superior to NHE in order to increase BFlh fascicle length although only the sprint training was able to both provide a preventive stimulus (increase fascicle length) and at the same time improve both sprint performance and mechanics. Further studies with advanced imaging techniques are needed to confirm the validity of the findings.
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Affiliation(s)
- Jurdan Mendiguchia
- Department of Physical Therapy, ZENTRUM Rehab and Performance Center, Barañain, Spain
| | - Filipe Conceição
- Center of Research, Education, Innovation and Intervention in Sport, Faculty of Sports, University of Porto, Porto, Portugal
- LABIOMEP—Porto Biomechanics Laboratory, University of Porto, Porto, Portugal
| | - Pascal Edouard
- Inter‐university Laboratory of Human Movement Biology (LIBM EA 7424), University of Lyon, University Jean Monnet, Saint Etienne, France
- Department of Clinical and Exercise Physiology, Faculty of medicine, Sports Medicine Unity, University Hospital of Saint-Etienne, Saint-Etienne, France
- Medical Commission, French Athletics Federation (FFA), Paris, France
| | - Marco Fonseca
- Center of Research, Education, Innovation and Intervention in Sport, Faculty of Sports, University of Porto, Porto, Portugal
- LABIOMEP—Porto Biomechanics Laboratory, University of Porto, Porto, Portugal
- Health and Performance Unit of Portuguese Football Federation, Portugal
| | - Rogerio Pereira
- Clínica do Dragão, Espregueira-Mendes Sports Centre–FIFA Medical centre of Excellence, Porto, Portugal
| | - Hernani Lopes
- DEM-ISEP, School of Engineering, Polytechnic of Porto, Porto, Portugal
| | | | - Pedro Jiménez-Reyes
- Centre for Sport Studies, Rey Juan Carlos University, Madrid, Spain
- * E-mail: ,
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18
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Silva F, Andrade S, Vilaça J, Paulo C, Conceição F. Endocarditis, Meningitis and Pneumocystis Pneumonia. Eur J Case Rep Intern Med 2016; 4:000535. [PMID: 30755926 PMCID: PMC6346874 DOI: 10.12890/2016_000535] [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: 11/15/2016] [Accepted: 12/04/2016] [Indexed: 11/30/2022] Open
Abstract
Infective endocarditis (IE) is associated with high morbidity and mortality despite advances in antibiotic and surgical treatment. Systemic embolism occurs in up to 49% of IE patients and may involve the major arteries, limb arteries, viscera and the central nervous system. In this report we describe a 60-year-old female patient with a history of acute lymphoblastic leukaemia who presented with endocarditis manifesting as stroke, acute limb ischaemia and meningitis. Early diagnosis is essential since treatment lowers the risk of embolism, with most events occurring within 2 weeks of treatment initiation.
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Affiliation(s)
- Filipa Silva
- Internal Medicine Department, Centro Hospitalar São João, Porto
| | - Sérgio Andrade
- Intermediate Care Unit of Emergency Department, Centro Hospitalar de São João, Porto
| | - João Vilaça
- Intermediate Care Unit of Emergency Department, Centro Hospitalar de São João, Porto
| | - Cristiana Paulo
- Intermediate Care Unit of Emergency Department, Centro Hospitalar de São João, Porto
| | - Filipe Conceição
- Intermediate Care Unit of Emergency Department, Centro Hospitalar de São João, Porto
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19
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Lemos LF, Martins C, Silva G, Conceição F. Analysis of the Horizontal Ground Reaction Forces in Sprinters. Med Sci Sports Exerc 2016. [DOI: 10.1249/01.mss.0000488249.04550.b4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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20
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Conceição F, Fernandes J, Lewis M, Gonzaléz-Badillo JJ, Jimenéz-Reyes P. Movement velocity as a measure of exercise intensity in three lower limb exercises. J Sports Sci 2015; 34:1099-106. [PMID: 26395837 DOI: 10.1080/02640414.2015.1090010] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The purpose of this study was to investigate the relationship between movement velocity and relative load in three lower limbs exercises commonly used to develop strength: leg press, full squat and half squat. The percentage of one repetition maximum (%1RM) has typically been used as the main parameter to control resistance training; however, more recent research has proposed movement velocity as an alternative. Fifteen participants performed a load progression with a range of loads until they reached their 1RM. Maximum instantaneous velocity (Vmax) and mean propulsive velocity (MPV) of the knee extension phase of each exercise were assessed. For all exercises, a strong relationship between Vmax and the %1RM was found: leg press (r(2)adj = 0.96; 95% CI for slope is [-0.0244, -0.0258], P < 0.0001), full squat (r(2)adj = 0.94; 95% CI for slope is [-0.0144, -0.0139], P < 0.0001) and half squat (r(2)adj = 0.97; 95% CI for slope is [-0.0135, -0.00143], P < 0.0001); for MPV, leg press (r(2)adj = 0.96; 95% CI for slope is [-0.0169, -0.0175], P < 0.0001, full squat (r(2)adj = 0.95; 95% CI for slope is [-0.0136, -0.0128], P < 0.0001) and half squat (r(2)adj = 0.96; 95% CI for slope is [-0.0116, 0.0124], P < 0.0001). The 1RM was attained with a MPV and Vmax of 0.21 ± 0.06 m s(-1) and 0.63 ± 0.15 m s(-1), 0.29 ± 0.05 m s(-1) and 0.89 ± 0.17 m s(-1), 0.33 ± 0.05 m s(-1) and 0.95 ± 0.13 m s(-1) for leg press, full squat and half squat, respectively. Results indicate that it is possible to determine an exercise-specific %1RM by measuring movement velocity for that exercise.
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Affiliation(s)
- Filipe Conceição
- a Faculdade de Desporto , Universidade do Porto , Porto , Portugal.,b Laboratório de Biomecânica , Universidade do Porto , Porto , Portugal
| | | | - Martin Lewis
- c College of Arts and Science , School of Science & Technology, Nottingham Trent University , Nottingham , UK
| | | | - Pedro Jimenéz-Reyes
- e Faculty of Physical Sciences and Sport , Catholic University of San Antonio , Murcia , Spain
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21
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Garcia J, Costa VM, Costa AE, Andrade S, Carneiro AC, Conceição F, Paiva JA, de Pinho PG, Baptista P, de Lourdes Bastos M, Carvalho F. Co-ingestion of amatoxins and isoxazoles-containing mushrooms and successful treatment: A case report. Toxicon 2015; 103:55-9. [PMID: 26091874 DOI: 10.1016/j.toxicon.2015.06.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2015] [Revised: 05/29/2015] [Accepted: 06/08/2015] [Indexed: 11/30/2022]
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22
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Jiménez-Reyes P, Samozino P, Cuadrado-Peñafiel V, Conceição F, González-Badillo JJ, Morin JB. Effect of countermovement on power-force-velocity profile. Eur J Appl Physiol 2014; 114:2281-8. [PMID: 25048073 DOI: 10.1007/s00421-014-2947-1] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Accepted: 06/25/2014] [Indexed: 11/29/2022]
Abstract
PURPOSE To study the effect of a countermovement on the lower limb force-velocity (F-v) mechanical profile and to experimentally test the influence of F-v mechanical profile on countermovement jump (CMJ) performance, independently from the effect of maximal power output (P max). METHODS Fifty-four high-level sprinters and jumpers performed vertical maximal CMJ and squat jump (SJ) against five to eight additional loads ranging from 17 to 87 kg. Vertical ground reaction force data were recorded (1,000 Hz) and used to compute center of mass vertical displacement. For each condition, mean force, velocity, and power output were determined over the entire push-off phase of the best trial, and used to determine individual linear F-v relationships and P max. From a previously validated biomechanical model, the optimal F-v profile maximizing jumping performance was determined for each subject and used to compute the individual mechanical F-v imbalance (Fv IMB) as the difference between actual and optimal F-v profiles. RESULTS A multiple regression analysis clearly showed (r(2) = 0.952, P < 0.001, SEE 0.011 m) that P max, Fv IMB and lower limb extension range (h PO) explained a significant part of the interindividual differences in CMJ performance (P < 0.001) with positive regression coefficients for P max and h PO and a negative one for Fv IMB. CONCLUSION Compared to SJ, F-v relationships were shifted to the right in CMJ, with higher P max, maximal theoretical force and velocity (+35.8, 20.6 and 13.3%, respectively). As in SJ, CMJ performance depends on Fv IMB, independently from the effect of P max, with the existence of an individual optimal F-v profile (Fv IMB having an even larger influence in CMJ).
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Affiliation(s)
- Pedro Jiménez-Reyes
- Faculty of Physical Sciences and Sport, Catholic University of San Antonio, Murcia, Spain,
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Martins S, Conceição F, Paiva JA, Simões MR, Fernandes L. Delirium recognition by family: European Portuguese validation study of the family confusion assessment method. J Am Geriatr Soc 2014; 62:1748-52. [PMID: 25039562 DOI: 10.1111/jgs.12973] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To present the validation study of the European Portuguese version of the Family Confusion Assessment Method (FAM-CAM) and to assess the level of psychological distress in families and caregivers of elderly hospitalized adults with delirium. DESIGN Validation study. SETTING Intermediate care unit of the Intensive Medicine Service of the São João Hospital Center, Porto, Portugal. PARTICIPANTS Families and caregivers of elderly hospitalized adults (≥48 hours). Inclusion criteria were sufficient knowledge about the individual to enable reporting on his or her mental and physical abilities and staying at the individual's bedside daily during hospitalization. Families and caregivers younger than 18 and those who did not speak Portuguese were excluded. MEASUREMENTS A trained researcher translated the FAM-CAM according to International Society For Pharmacoeconomics and Outcomes Research guidelines. All individuals were assessed using the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision (DSM-IV-TR) (reference standard) and the Confusion Assessment Method (CAM). A trained researcher administered the FAM-CAM to families and caregivers. The level of family-perceived distress was evaluated on a numerical rating scale from 0 to 4. RESULTS The sample included 40 families and caregivers (58% adult children). According to the DSM-IV-TR, 20% of individuals had delirium. The FAM-CAM had moderate sensitivity (75%) and good specificity (91%) when assessed against the DSM-IV-TR and better sensitivity (86%) and specificity (91%) than the CAM. Fifty-seven percent of families and caregivers classified delirium as an extremely distressing experience. CONCLUSION These preliminary results suggest that FAM-CAM is a sensitive screening tool for family detection of delirium in elderly hospitalized adults. The high level of psychological distress found corroborated previous studies. Future studies with larger samples will be needed for further validation and to allow the analysis of other psychometric properties.
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Affiliation(s)
- Sónia Martins
- Research and Education Unit on Aging, University of Porto, Porto, Portugal
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Jiménez-Reyes P, Samozino P, Cuadrado-Peñafiel V, Conceição F, González-Badillo JJ, Morin JB. OC9 A simple method to measure force-velocity profile in counter movement jump. Br J Sports Med 2014. [DOI: 10.1136/bjsports-2014-094245.9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Martins S, Conceição F, Paiva J, Simões M, Fernandes L. EPA-0740 – Delirium screening using the family confusion assessment method (fam-cam): preliminary results of portuguese validation study. Eur Psychiatry 2014. [DOI: 10.1016/s0924-9338(14)78090-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Tavares ABW, Micmacher E, Biesek S, Assumpção R, Redorat R, Veloso U, Vaisman M, Farinatti PTV, Conceição F. Effects of Growth Hormone Administration on Muscle Strength in Men over 50 Years Old. Int J Endocrinol 2013; 2013:942030. [PMID: 24382963 PMCID: PMC3870652 DOI: 10.1155/2013/942030] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 10/16/2013] [Accepted: 11/21/2013] [Indexed: 11/18/2022] Open
Abstract
Growth hormone (GH) use has been speculated to improve physical capacity in subjects without GH deficiency (GHD) through stimulation of collagen synthesis in the tendon and skeletal muscle, which leads to better exercise training and increased muscle strength. In this context, the use of GH in healthy elderly should be an option for increasing muscle strength. Our aim was to evaluate the effect of GH therapy on muscle strength in healthy men over 50 years old. Fourteen healthy men aged 50-70 years were evaluated at baseline for body composition and muscle strength (evaluated by leg press and bench press exercises, which focus primarily on quadriceps-lower body part and pectoralis major-upper body part-muscles, resp.). Subjects were randomised into 2 groups: GH therapy (7 subjects) and placebo (7 subjects) and reevaluated after 6 months of therapy. Thirteen subjects completed the study (6 subjects in the placebo group and 7 subjects in the GH group). Subjects of both groups were not different at baseline. After 6 months of therapy, muscle strength in the bench press responsive muscles did not increase in both groups and showed a statistically significant increase in the leg press responsive muscles in the GH group. Our study demonstrated an increase in muscle strength in the lower body part after GH therapy in healthy men. This finding must be considered and tested in frail older populations, whose physical incapacity is primarily caused by proximal muscle weakness. The trial was registered with NCT01853566.
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Affiliation(s)
- A. B. W. Tavares
- Endocrine Service, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro, Rua Barão de Lucena, 135/202 Botafogo, 22260-020 Rio de Janeiro, RJ, Brazil
- *A. B. W. Tavares:
| | - E. Micmacher
- Endocrine Service, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro, Rua Barão de Lucena, 135/202 Botafogo, 22260-020 Rio de Janeiro, RJ, Brazil
| | - S. Biesek
- Physical Activity and Health Promotion Laboratory (LABSAU), Rio de Janeiro State University, Rio de Janeiro, RJ, Brazil
| | - R. Assumpção
- Endocrine Service, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro, Rua Barão de Lucena, 135/202 Botafogo, 22260-020 Rio de Janeiro, RJ, Brazil
| | - R. Redorat
- Endocrine Service, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro, Rua Barão de Lucena, 135/202 Botafogo, 22260-020 Rio de Janeiro, RJ, Brazil
| | - U. Veloso
- Physical Activity and Health Promotion Laboratory (LABSAU), Rio de Janeiro State University, Rio de Janeiro, RJ, Brazil
| | - M. Vaisman
- Endocrine Service, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro, Rua Barão de Lucena, 135/202 Botafogo, 22260-020 Rio de Janeiro, RJ, Brazil
| | - P. T. V. Farinatti
- Physical Activity and Health Promotion Laboratory (LABSAU), Rio de Janeiro State University, Rio de Janeiro, RJ, Brazil
- Salgado de Oliveira University, Rio de Janeiro, RJ, Brazil
| | - F. Conceição
- Endocrine Service, Clementino Fraga Filho University Hospital, Federal University of Rio de Janeiro, Rua Barão de Lucena, 135/202 Botafogo, 22260-020 Rio de Janeiro, RJ, Brazil
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Magina S, Lisboa C, Gonçalves E, Conceição F, Leal V, Mesquita-Guimarães J. A case of toxic epidermal necrolysis treated with intravenous immunoglobin. Br J Dermatol 2000; 142:191-2. [PMID: 10819555 DOI: 10.1046/j.1365-2133.2000.03276.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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