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1.
Graefes Arch Clin Exp Ophthalmol ; 261(11): 3193-3200, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37490105

RESUMO

PURPOSE: Central Serous Chorioretinopathy (CSCR) is a prevalent ocular disease classified in the pachychoroidal spectrum with an elevated morbidity. Although the pathogenesis is yet unclear, mineralocorticoid-mediated pathways seem to be implicated. Primary hyperaldosteronism (PA) is a relatively frequent, albeit underdiagnosed, cause of hypertension, and has a specific therapy. A previous study assessed the prevalence of CSCR-like signs in a cohort of patients diagnosed with PA and found signs in seven out of thirteen PA patients. The present study aims to study the contrary, screening for PA in a cohort of acute CSCR patients. METHODS: Between March 2017 and September 2018 all patients with acute CSCR were systematically referred to Endocrinology Department after complete ophthalmic evaluation was performed with visual acuity, spectral domain optical coherence tomography, fundus autofluorescence, fluorescein and indocyanine green angiography. The method applied for detection of PA was the 2-h 25 mg captopril challenge test (CCT). RESULTS: Of the nineteen patients screened, two of them had a CCT positive for PA (2-h plasma aldosterone/renin ratio > 50 and/or an aldosterone level of 130 pg/ml or higher), and were treated with mineralocorticoid receptor antagonists (MRA). No ophthalmic pattern was identified in them in terms of time to resolution, recurrences or features of the acute episode. The only differential feature in the fundus of PA patients was pathological arteriovenous crossings (AVC) as well as elevated BP levels. CONCLUSION: a high incidence of PA was found among acute CSCR patients. This preliminary study suggests a need for screening for PA in hypertensive CSCR patients in real clinical practice.

2.
J Sports Sci Med ; 18(4): 789-797, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31827364

RESUMO

The objective was to investigate the effects of functional (FT) and traditional (TT) training on trunk muscles maximal isometric strength, rate of force development and endurance with trained elderly women. Forty-five elderly women were directed into three groups: FT (n =1 6), TT (n = 14) and Control (n = 15). The FT (multi-planar, and multi-articular movements) and TT (primarily machine-based resistance exercises) performed mobility, muscle strength and power exercises. Both training groups also performed intermittent cardiometabolic activities. The maximum strength and endurance of the trunk muscles were verified, both at baseline and after 12 weeks of training (3xweek for 50 min each). Data were analyzed using a 2-way ANCOVA with contrast of adjusted mean values. FT significantly increased all variables: maximum trunk flexor strength (p = 0.002, 22%); rate of flexor force development (p = 0.001, 84%); trunk extensors maximal strength (p = 0.003, 17%); trunk extensor rate of force development (p = 0.05, 16%); trunk flexors (p = 0.001, 19%) and extensors (p = 0.017, 13%) endurance compared to baseline. TT showed an increase only in RFD of trunk extensors (p = 0.003, 53%), and flexors (p = 0.033, 42%), and trunk flexors endurance (p = 0.008, 11%). However, there was no statistically significant difference between groups. FT promoted improvement in all variables; strength, endurance and rate of force development of the trunk flexors and extensors of the elderly. On the other hand, TT improved only the rate of force development of trunk flexors and extensors and endurance of the trunk flexors. FT is recommended for elderly women as it improves a broader array of physiological parameters.


Assuntos
Força Muscular/fisiologia , Músculo Esquelético/fisiologia , Resistência Física/fisiologia , Treinamento Resistido/métodos , Atividades Cotidianas , Idoso , Feminino , Humanos , Contração Isométrica/fisiologia , Pessoa de Meia-Idade , Equilíbrio Postural/fisiologia , Traumatismos da Coluna Vertebral/prevenção & controle , Coluna Vertebral/fisiologia , Tronco
3.
Eur J Appl Physiol ; 118(9): 1941-1958, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-29978261

RESUMO

PURPOSE: Exercise-induced muscle pain is a self-limiting condition which impacts physical activity habits. Transcutaneous electrical nerve stimulation (TENS) promotes pain reduction and functional improvement in different pain conditions. We propose that applying TENS during exercise might reduce pain and improve physical performance. Thus, we aimed to investigate immediate effects of TENS applied during resistance exercise. METHODS: Healthy subjects of both sexes, irregularly active or sedentary were assigned into two groups: active (n = 24) or placebo (n = 22) TENS. The study was conducted over five moments: on day 0, subjects were recruited, on day 1 subjects performed the one-repetition maximum test (1RM); 72 h later, on day 2, 1RM was retested; 48 h later, on day 3, TENS was applied during a functional-resisted exercise protocol for upper limbs (bench press and rowing), with an intensity of 80% of 1RM; and 24 h after, on day 4, subjects were reevaluated. Assessment included pain intensity at rest and with movement, pressure pain thresholds, and muscle fatigue. RESULTS: TENS did not reduce pain intensity when compared to placebo (p > 0.05). TENS reduce PPT in the latissmus dorsi: p = 0.02 and anterior tibialis: p = 0.04 in immediate reassessment. Immediate effects of TENS were significant for fatigue perception at rest (p = 0.01) and number of maximum repetitions during exercise sets, starting from the 5th set of rowing exercise (p = 0.002). CONCLUSION: Our results show that TENS did not reduce pain perception in healthy individuals, but its use induced increased muscle action, contributing to a greater fatigue perception.


Assuntos
Exercício Físico/fisiologia , Movimento/fisiologia , Fadiga Muscular/fisiologia , Músculo Esquelético/fisiologia , Estimulação Elétrica Nervosa Transcutânea , Adulto , Terapia por Exercício/métodos , Feminino , Voluntários Saudáveis , Humanos , Masculino , Medição da Dor/métodos , Limiar da Dor/fisiologia , Estimulação Elétrica Nervosa Transcutânea/métodos , Adulto Jovem
4.
Int J Sports Med ; 39(7): 527-534, 2018 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-29775988

RESUMO

AIM: This study compared the effect of different resistance training (RT) frequencies on total, android, gynoid and trunk body fat in overweight/obese older women. METHODS: Fifty-seven overweight/obese older women (66.9±5.3 years and 39.9±4.9% body fat) were randomly assigned to one of three groups: a group performing RT twice a week (G2X), a group performing RT three times a week (G3X), or a non-exercise control group (CG). Both training groups performed the same 12-week RT program consisting of 8 exercises that trained all major muscle groups. Dual-energy X-ray absorptiometry was used to assess body composition. RESULTS: After the intervention period, both G2X and G3X demonstrated significant (P<0.05) reductions in adiposity compared to the CG for total body fat (G2X=-1.7%, G3X=-2.7%, CG=+2.1%), android fat (G2X=-6.2%, G3X=-7.0%, CG=+8.6%), gynoid fat (G2X=-2.5%, G3X=-2.9%, CG=+1.0%), and trunk fat (G2X=-2.5%, G3X=-3.0%, CG=+2.9%), with no significant differences between training groups. CONCLUSION: These results demonstrate that a low-volume 12-week RT program performed two or three times per week causes decreases in total and regional fat deposition with the greatest reductions occurring in the android region.


Assuntos
Distribuição da Gordura Corporal , Obesidade/terapia , Sobrepeso/terapia , Treinamento Resistido/métodos , Absorciometria de Fóton , Idoso , Índice de Massa Corporal , Dieta Redutora , Feminino , Humanos , Obesidade/fisiopatologia , Sobrepeso/fisiopatologia , Fatores de Tempo
6.
Arch Soc Esp Oftalmol (Engl Ed) ; 99(1): 23-32, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37661041

RESUMO

The treatment of dark circles is one of the most common request from the patients attending to the esthetics clinic. A tired, sad or aged appearance is perceived by our patients. Moreover, it is a multifactorial problem and we could treat it with a wide range of treatments. With this systematic review, we want to check the best available evidence regarding the treatment of periorbital hyperpigmentation using light devices. We have reviewed 208 papers, including 14 of them for full consideration. Several light sources have demonstrated to be effective treating pigmented dark circles. The best results have been reported using intense pulsed light and rubi laser together with depigmenting substances. If we want to treat periocular hyperpigmentation, soft wrinkles, rhytides and skin density we should use carbo dioxide laser or Erbium:Yttrium Scandium Gallium Garnet. The Neodymium-Doped Yttrium Aluminium Garnet, alexandrite and diode lasers were the ones giving the worst outcome regarding pigmentation treatment. The concomitant use of depigmenting treatment may help getting better results and reducing the rate of post inflammatory hyperpigmentation. A better standardization and measuring of the obtained results is needed regarding pigmentation changes. We must keep on investigating on this topic with new clinical trials measuring objective results and combining different light devices for a multifactorial treatment of the dark circles.


Assuntos
Hiperpigmentação , Envelhecimento da Pele , Humanos , Idoso , Hiperpigmentação/etiologia , Hiperpigmentação/terapia , Pele , Resultado do Tratamento , Ítrio
7.
Arch Soc Esp Oftalmol (Engl Ed) ; 98(7): 367-376, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37285959

RESUMO

The recent release of brolucizumab and the development of new antiangiogenic molecules as abicipar pegol has increased the interest towards inflammatory complications after intravitreal drug injection. Those drugs are associated to a higher rate of inflammatory adverse events compared to classic drugs. In this context it is essential to differentiate between sterile and infectious cases for a fast and effective treatment. The clinical similarities between infectious and sterile cases, the high rate of culture negative patients and the heterogeneity in the terminology used are obstacles for a correct diagnosis and report of these complications. Sterile cases appear early after the injection, before 48 h; or 20 days after in brolucizumab-related vasculitis cases. Infectious cases show up around the third day after injection and up to a week after it. A severe visual impairment, severe pain, severe hyperemia, hypopyon and a more severe intraocular inflammatory process are signs of a likely infectious origin. If the cause of the inflammation is uncertain we must follow up the patient closely or "tap and inject" antimicrobial agents in order to prevent the eventual complications of an infectious endophthalmitis. On the other hand, sterile endophthalmitis might be observed in mild cases or treated with steroids according to the severity of the inflammation.


Assuntos
Endoftalmite , Degeneração Macular , Humanos , Diagnóstico Diferencial , Estudos Retrospectivos , Endoftalmite/diagnóstico , Degeneração Macular/complicações , Injeções Intravítreas , Inflamação/diagnóstico , Inflamação/tratamento farmacológico , Inflamação/etiologia
8.
Arch Soc Esp Oftalmol (Engl Ed) ; 98(11): 633-639, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37748684

RESUMO

PURPOSE: To assess the impact on the quality of life (QoL) among different retinal diseases such as diabetic macular edema (DME), retinal vein occlusion (RVO), pathologic myopia (PM), neovascular age-related macular degeneration (nAMD) and central serous chorioretinopathy (CSC). METHODS: A cross-sectional study was carried out in 241 patients, affected by DME (n=44), RVO (n=41), PM (n=34) and nAMD (n=85) receiving intravitreal injections due to the presence of macular edema or choroidal neovascularization. The CSC patients included (n=37) were candidates for laser treatment. The patients included completed the National Eye Visual Functioning Questioning-25 (NEI VFQ-25). Best eye visual acuity (BEVA) was recorded using the Early Treatment Diabetic Retinopathy Study (ETDRS) scale. RESULTS: There were significant differences between subgroups for all the domains, except for the general vision in which all scores among diseases ranged from 40.7 to 45.2 out of 100 (P=.436), despite the difference in BEVA (CSC: 86.3±11.9; RVO: 78.5±15.5, DME: 73.3±15.2, nAMD: 72.9±12.6 and PM: 68.5±18.1 letters respectively; P<.001). The lowest VFQ-25 total score was observed in the PM patients (52.1±20.9), followed by nAMD (55.3±20.8), RVO (65.0±22.3), DME (68.6±21.0) and CSC (70.9±16.2). The DME group reported the worst score for general health (38.9±21.4). Mental health and role difficulties were lowest for PM (48.2±28.8 and 48.2±31.9, P<.007). CONCLUSIONS: This study reveals the differences in the QoL among DME, RVO, nAMD, PM and CSC, describing the different repercussions that they can suffer, observing a higher impact in PM and nAMD.


Assuntos
Retinopatia Diabética , Degeneração Macular , Edema Macular , Doenças Retinianas , Oclusão da Veia Retiniana , Humanos , Edema Macular/etiologia , Qualidade de Vida , Degeneração Macular/psicologia , Estudos Transversais , Transtornos da Visão
9.
Res Q Exerc Sport ; 94(4): 1028-1034, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36006785

RESUMO

Purpose: This study analyzed the acute mechanical response to three workouts of the day (WOD) protocols in as many repetitions as possible (AMRAP), every minute on the minute (EMOM), and for time (FT) models by quantifying the degree of mechanical fatigue induced by popular resistance exercises in the Cross modalities, front squat (FS), and shoulder press (SP). We also analyzed whether the exercises' fastest velocity (Vfastest) could be an objective indicator of relative intensity (%1RM). Methods: Nine trained men performed three FS and SP exercises protocols. The degree of fatigue was quantified by the velocity loss (VL) achieved in both exercises and the velocity loss achieved in the WOD (VLWOD). Results: The VLWOD in the AMRAP, EMOM, and FT protocols was 73.2 ± 10.9%, 61.6 ± 15.1%, and 76.1 ± 8.8%, respectively. In the AMRAP and FT protocol, the Vfastest showed very strong relationships with the %1RM for FS and SP (r = -0.83, -0.75, respectively, p < .01); while in the EMOM protocol, there was a strong relationship between these variables, only for the SP (r = -0.61, p < .05). In the FT protocol, we observed an extremely strong relationship for FS (r = -0.91, p < .001) and very strong (r = -0.71, p < .05) for SP between these variables. Conclusion: Therefore, the AMRAP and FT training models induce the highest degrees of mechanical fatigue in the FS and SP exercises, and the Vfastest is a reliable tool for estimating relative intensity in resistance exercises of Cross modalities.


Assuntos
Treinamento Resistido , Masculino , Humanos , Treinamento Resistido/métodos , Levantamento de Peso/fisiologia , Postura , Exercício Físico , Teste de Esforço , Músculo Esquelético/fisiologia , Força Muscular
10.
Arch Soc Esp Oftalmol (Engl Ed) ; 98(12): 687-702, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37813187

RESUMO

Nanophthalmos is a rare congenital condition of the eyeball that is characterised by a smaller size of the anterior and posterior segments without associated ocular malformations. Typical features that have traditionally been described in these eyes are short axial length, thickened sclera, cornea with a smaller diameter, narrow anterior chamber, and an increased lens to globe volume ratio. However, at present, there is still a lack of recognised diagnostic criteria for nanophthalmos and a classification of its severity. Its clinical relevance stems from the increased risk of multiple ocular conditions, such as high hyperopia, amblyopia, angle-closure glaucoma, retinal detachment, and cataracts. Likewise, in relation to surgery in these eyes, there are particularities in cataract and glaucoma surgery and with a greater risk of associated intra- and postoperative complications. In this way, the treatment of nanophthalmos focuses on controlling the associated eye conditions and reducing and controlling surgical complications. This review aims to update what has been published in recent years regarding nanophthalmos.


Assuntos
Catarata , Glaucoma de Ângulo Fechado , Hiperopia , Cristalino , Microftalmia , Humanos , Microftalmia/complicações , Microftalmia/diagnóstico , Glaucoma de Ângulo Fechado/complicações , Visão Ocular , Catarata/complicações
11.
Sports (Basel) ; 10(12)2022 Nov 28.
Artigo em Inglês | MEDLINE | ID: mdl-36548489

RESUMO

The objective of this study was to monitor the training loads (TL) and well-being of elite rhythmic gymnastics (RG) athletes, as well as compare these variables between starters and reserve gymnasts during 25 weeks of training. Ten athletes from the Brazilian national RG team (17.4 ± 1.1 y of age) were monitored during the general preparatory period (GPP), specific preparatory period (SPP), and pre-competitive period (PCP). The internal TL was quantified with the use of sessional ratings of perceived exertion (sRPE). We assessed well-being daily with a well-being scale. The TL, duration, monotony, and strain were calculated weekly. We found that the internal TL and session durations were 9242 ± 2511 AU and 2014 ± 450 min, respectively. The internal TL, strain, and monotony were greater in the PCP than in the GPP and SPP for starters. In the SPP, there were statistical differences in internal TL (p = 0.036) and strain (p = 0.027) between starters and reserves. In the PCP, there were also statistical differences between starters vs. reserves athletes regarding internal TL (p = 0.027) and strain (p = 0.05). There was no statistically significant difference in well-being between the periods assessed. In conclusion, RG athletes display a higher TL magnitude during the PCP, whereas only reporting non-significant minor variations in well-being. In addition, there is a discrepancy in the TL between starters and reserves.

12.
Eur J Appl Physiol ; 111(9): 2271-9, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21327798

RESUMO

The aim of the study was to determine the effectiveness of low-frequency vibration recovery (LFV-rec) on blood lactate removal, muscle contractile properties, and on time to exhaustion during cycling at maximal oxygen uptake power output (pVO(2max)). Twelve active males carried out three experimental sessions. In session 1, participant's maximal oxygen uptake (VO(2max)) and pVO(2max) were determined, and in sessions 2 and 3, the participants performed a fatiguing exercise (2 min of cycling at pVO(2max)) and then a 15 min recovery period using one of two different methods: LFV-rec which consisted on sitting with feet on the vibratory platform (20 Hz; 4 mm) and passive recovery (P-rec), sitting without vibration stimulus. After that, participants performed an all-out exercise test on cycle ergometer at pVO(2max). In the recovery period, variables such as heart rate (HR), blood lactate concentration [Lac], and tensiomyographic parameters (D (m): maximal radial displacement; T (s): time of contraction maintenance, and T (r): relaxation time) were measured. In an all-out exercise test, mean time to exhaustion (TTE), total distance covered (TD), mean cycling velocity (V (m)), and maximal HR (HR(max)) were also assessed. The results showed no effect of recovery strategy on any of the assessed variables; nevertheless, higher values, although not significant, were observed in TTE, TD, and V (m) after LFV-rec intervention. In conclusion, LFV-rec strategy applied during 15 min after short and intense exercise does not seem to be effective on blood lactate removal, muscle contractile properties, and on time to exhaustion during cycling at pVO(2max).


Assuntos
Ciclismo/fisiologia , Ácido Láctico/sangue , Contração Muscular/fisiologia , Doenças Musculares/reabilitação , Doenças Musculares/terapia , Esforço Físico/fisiologia , Vibração/uso terapêutico , Adulto , Teste de Esforço/métodos , Humanos , Ácido Láctico/metabolismo , Ácido Láctico/farmacocinética , Masculino , Força Muscular/fisiologia , Doenças Musculares/sangue , Doenças Musculares/fisiopatologia , Medicina Física e Reabilitação/métodos , Troca Gasosa Pulmonar/fisiologia , Recuperação de Função Fisiológica/fisiologia , Fatores de Tempo , Adulto Jovem
13.
J Strength Cond Res ; 25(12): 3326-33, 2011 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-22080316

RESUMO

Da Silva-Grigoletto, ME, de Hoyo, M, Sañudo, B, Corrales, L, and García-Manso, JM. Determining the optimal whole-body vibration dose-response relationship for muscle performance. J Strength Cond Res 25(12): 3326-3333, 2011-The aim of this investigation was twofold: first, to determine the optimal duration of a single whole-body vibration (WBV) exposure (phase 1) and second to find out the ideal number of sets per intervention to maximize muscle performance (phase 2). All participants were young (age: 19.4 ± 1.6 years), healthy, physically active men. In both studies, a 30-Hz frequency and a 4-mm peak-to-peak displacement were used. In phase 1, subjects (n = 30) underwent 3 sets of different durations (30, 60, and 90 seconds), whereas in phase 2, subjects (n = 27) underwent 3 interventions where the duration remained fixed at 60 seconds, and the number of sets performed (3, 6, or 9) was modified. The recovery time between sets was set at 2 minutes. In all interventions, each set consisted of 1 isometric repetition in a squat position with knees flexed at 100°. Before and after each session, jump height (countermovement jump [CMJ] and squat jump [SJ]) and power output in half squat (90° knee flexion) were assessed. In phase 1, an improvement in jump ability and power output was observed after the 30- and 60-second intervention (p < 0.01), whereas the 90 second intervention, participants just experienced a decrease in SJ and CMJ (p < 0.05). When comparing the different protocols, the greatest response was achieved using 60 seconds (p < 0.05), which was therefore considered as the optimal duration to be used in phase 2. In the second phase, improvements in jump ability and power output were found with 3 and 6 sets (p < 0.05), whereas with 9 sets, participants actually experienced a decrease in these variables. Intergroup comparison showed a greater effect for the program of 6 sets (p < 0.05). In conclusion, a WBV intervention consisting of six 60-second sets produces improved muscle performance measured by SJ, CMJ, and power output.


Assuntos
Desempenho Atlético , Exercício Físico/fisiologia , Movimento , Força Muscular , Músculo Esquelético/fisiologia , Vibração , Adolescente , Adulto , Humanos , Contração Isométrica , Masculino , Fatores de Tempo , Adulto Jovem
14.
J Strength Cond Res ; 24(12): 3334-42, 2010 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-21068682

RESUMO

The addition of fructose (F) to a glucose (G) supplement may modify the metabolic response during exercise; however, its effect on perceived exertion (PE) and its influence on postprandial metabolism have not been jointly studied in different types of exercise. This study sought to assess the acute effects of F addition to a G supplement on PE and on the postprandial metabolic response during a single bout of either strength exercise (SE) or endurance exercise (EE). Twenty physically trained men ingested an oral dose of G or GF 15 minutes before starting a 30-minute session of SE (10 sets of 10 repetitions of half squat) or EE (cycling). The combination resulted in 4 randomized interventions in a crossover design in which all subjects performed all experimental conditions: G + SE, GF + SE, G + EE, and GF + SE. Perceived exertion, heart rate (HR), G, insulin, lactate, and urinary catecholamine levels were measured before exercise, during the exercise, and during acute recovery. Perceived exertion during exercise was lower for GF than for G during SE and EE (mean ± SD; 8.95 ± 0.62 vs. 9.26 ± 0.65, p < 0.05 and 7.47 ± 0.84 vs. 7.74 ± 0.93, p < 0.05, respectively). The glycemic peak in GF + SE was lower than in G + SE (p < 0.05), and there was a second peak during recovery (p < 0.05), whereas in EE, no difference in blood G levels was noted between G and GF supplements. Moreover, HR, urinary adrenalin, and noradrenalin were lower in GF than in G (p < 0.05), though only for EE. The results showed that PE is positively affected by GF supplementation for both SE and EE and thus may be a useful dietary strategy for helping to achieve higher training loads.


Assuntos
Suplementos Nutricionais , Frutose/farmacologia , Glucose/farmacologia , Força Muscular/efeitos dos fármacos , Resistência Física/efeitos dos fármacos , Esforço Físico/efeitos dos fármacos , Administração Oral , Adulto , Biomarcadores/análise , Glicemia/análise , Catecolaminas/urina , Estudos Cross-Over , Epinefrina/urina , Frutose/administração & dosagem , Glucose/administração & dosagem , Frequência Cardíaca/fisiologia , Humanos , Insulina/sangue , Lactatos/sangue , Masculino , Norepinefrina/urina , Consumo de Oxigênio/fisiologia
15.
J Strength Cond Res ; 24(6): 1623-32, 2010 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-20508468

RESUMO

The acute ingestion of a supplement with different glycemic carbohydrates, including fructose, is a typical practice for athletes before exercising. Observational evidence suggests that different metabolic responses may modify the exercise-stimulated endothelium-dependent vasodilation. The purpose of the present study was to investigate whether endothelial reactivity, stimulated by anaerobic exercise (AnE) or aerobic exercise (AE), both performed with glycemic supplementation, is modified by the addition of fructose. Twenty physically trained men ingested an oral dose of glucose (G) or glucose plus fructose (F) 15 minutes before starting a 30-minute session of AnE (10 sets of 10 repetitions of half squat) or AE (cycling). The combination resulted in 4 randomized interventions in a crossover design in which all subjects performed all experimental conditions: G+AnE, F+AnE, G+AE, and F+AE. Ischemic reactive hyperemia (IRH), glycemia, plasma lipoperoxides (LPOs), nitric oxide (NO), and lactate were determined at baseline, exercise, and acute recovery time points. Immediately after AnE, IRH was 26.35% higher in F+AnE than in G+AnE (p<0.05); this difference rose to 27.24% at the end of the recovery period (p<0.05). The glycemic peak in F+AnE was lower than in G+AnE (p<0.05), and there was a second peak during recovery (p<0.05). There were no differences observed in LPO between anaerobic trials, but the NO bioavailability increased and was higher in F + AnE than in G+AnE after exercise and recovery (p<0.05). Residual lactate was also higher under the F+AnE condition (p<0.05). During AE, there were no differences in IRH, glycemia, or NO between groups, but LPO was significantly higher after F supplementation. These results suggest that the addition of fructose to a single G supplement ingested before a glycolitic exercise can modify the glucoregulation and increases ischemic reactive hyperemia.


Assuntos
Limiar Anaeróbio/efeitos dos fármacos , Carboidratos da Dieta/administração & dosagem , Endotélio Vascular/efeitos dos fármacos , Exercício Físico/fisiologia , Frutose/administração & dosagem , Glucose/administração & dosagem , Vasodilatação/fisiologia , Adulto , Limiar Anaeróbio/fisiologia , Atletas , Glicemia/análise , Suplementos Nutricionais , Endotélio Vascular/fisiologia , Glicólise , Humanos , Insulina/sangue , Ácido Láctico/sangue , Peróxidos Lipídicos/sangue , Masculino , Óxido Nítrico/sangue
16.
Mil Med ; 175(1): 61-4, 2010 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-20108844

RESUMO

This study sought to determine the effects of hyperbaric pressure on heart rate modulation, by analyzing potential changes in heart rate variability (HRV). Ten divers were exposed to pressures of 1, 2, 3, and 4 atmospheres absolute (ATA). The test was performed in a hyperbaric chamber. Heart rate (HR) was recorded in supine subjects for 10 minutes per atmosphere. HRV was analyzed in the frequency mode (fast-Fourier transform and continuous wavelet transform). Results confirmed bradycardia as pressure increased. The drop in HR attained statistical significance after 2, 3, and 4 ATA. Signal energy (normalized TP values) rose progressively, becoming significant at 2 ATA. High frequency and low frequency displayed similar behavior in both cases. Although frequency band peaks did not yield clear results, continuous wave transform analysis showed that the frequency spectrum tended to shift into the high-frequency range as pressure increased. In summary, increased pressure prompted increased bradycardia, and HRV shifted into high-frequency range.


Assuntos
Mergulho/fisiologia , Sistema de Condução Cardíaco/fisiologia , Frequência Cardíaca/fisiologia , Oxigenoterapia Hiperbárica , Adulto , Análise de Variância , Pressão Atmosférica , Feminino , Humanos , Masculino , Processamento de Sinais Assistido por Computador
17.
J Hum Kinet ; 73: 251-265, 2020 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-32774557

RESUMO

Current literature shows studies that question the safety of the practices carried out in high-intensity training modalities such as CrossFit®, Cross Training or High-Intensity Functional Training, which may lead to a greater risk in the prevalence of injuries. The aim of this study was to analyze in detail the prevalence of injuries occurring in training based on the CrossFit®, Cross Training or High-Intensity Functional Training modalities, through a systematic review, as well as evaluating the methodological quality of the included studies. We used the recommendations of the PRISMA protocol. For the quality analysis of the studies, we applied the tool proposed by the National Institute of Health (United States). The areas that mainly present a higher risk of injury during CrossFit, Cross Training or High-Intensity Functional Training practices are shoulders, knees and back. Additionally, 11 of the 12 included studies displayed a poor methodological quality according to the quality tool used.

18.
J Sports Med Phys Fitness ; 60(9): 1283-1290, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-33124792

RESUMO

BACKGROUND: Physical exercise is widely recommended for improving physical fitness. However, the most effective training method in improving the daily life of postmenopausal women is not clear. Therefore, this study compares different ways of functional training, focused on the task, and directed to the physical abilities on the functionality and quality of life of the postmenopausal women. METHODS: Forty-seven participants were randomly assigned into three groups: element-based functional training (EBFT); task-specific-based functional training (TSBFT); and the control group (CG). The intervention lasted fourteen weeks, with three weekly sessions stimulating several physical valences in the same session. The global functionality, functional reach, gait speed, handgrip strength, jumping ability, and quality of life before and after the intervention were evaluated. RESULTS: A similar increase was detected in both experimental groups for the variables-analyzed when compared to the initial moment (P<0.05), except in the dynamic postural control (P>0.05), which showed no difference. However, in the tests of rising from the floor and handgrip strength, only the task-specific-based functional training showed difference over time (P<0.05). CONCLUSIONS: Functional training protocols improve the performance in daily activities of postmenopausal women. However, task-specific-based functional training is more effective when compared to the control group in the analyzed variables.


Assuntos
Terapia por Exercício/métodos , Exercício Físico , Pós-Menopausa/fisiologia , Qualidade de Vida , Idoso , Feminino , Força da Mão/fisiologia , Humanos , Pessoa de Meia-Idade , Desempenho Físico Funcional , Inquéritos e Questionários , Velocidade de Caminhada/fisiologia
19.
J Sports Med Phys Fitness ; 60(6): 823-831, 2020 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-32253896

RESUMO

BACKGROUND: Negative functionality changes are among the effects of aging. The multicomponent training performed on conventional machines or with new implements and features directed to daily activities is strongly recommended among attenuation strategies. However, the efficiency of both types of training is not yet clear in the recent literature. The aim was to compare the effects of different multicomponent training methods on functional parameters in older women. METHODS: Thirty-seven volunteers were randomly selected into the functional multicomponent training (MFT: N.=15), traditional multicomponent training (MTT: N.=14) and control group (CG: N.=8). They were assessed in the tests: Six-Minute Walk Test (6MWT), Ten-Minute Fast Walking Test (10FWT), Timed Up and Go test (TUG), Functional Reach Test (FRT), Ankle Test (AKT), Sit To Stand Modified test (STSM), and quality of life (QOL). ANOVA (3×2) followed by the Bonferroni post-hoc was used, adopting P≤0.05 for statistical significance. RESULTS: When compared pre-post values, MFT showed significant differences in all functional tests evaluated (AKT: P<0.01; STSM: P<0.01; FRT: P<0.01; QOF: P<0.01; 10FWT: P<0.01; 6MWT: P<0.01; TUG: P<0.05). In the same comparison, MTT showed a significant change in all tests (AKT: P<0.01; STSM: P<0.01; FRT: P<0.01; QOF: P<0.05; 6MWT: P≤0.05; TUG: P<0.05) except 10FWT. When compared to CG, MFT showed a significant difference in all walking tests and MTT showed a better performance in 10FWT and TUG. CONCLUSIONS: Both experimental protocols were effective to improve functional parameters in older women. However, the MFT was performed better in most tests that required efficiency in gait ability.


Assuntos
Envelhecimento/fisiologia , Condicionamento Físico Humano/métodos , Idoso , Tornozelo/fisiologia , Exercício Físico , Feminino , Marcha , Humanos , Masculino , Pessoa de Meia-Idade , Qualidade de Vida , Teste de Caminhada , Caminhada
20.
Braz J Phys Ther ; 24(2): 161-166, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-30872005

RESUMO

BACKGROUND: There are a limited number of tests for the assessment of shoulder and pelvic girdle stability. Reliable instruments are important to evaluate movement dysfunction at these joints in order to provide more objective parameters. OBJECTIVE: To evaluate the inter-day reliability of the Upper Body Test in young adults. METHODS: A reliability study was carried out with three assessments of the shoulder and pelvic girdle stability within 48-h intervals (Monday, Wednesday, and Friday). The OctoBalance® platform was used to perform the Upper Body Test in 31 active young adults (24.5±8 years). Intraclass Correlation Coefficient (ICC2,2) two-way mixed model, Coefficient of Variation, and Bland-Altman plots were used to verify the reliability of the test. The standard error of measurement (SEM) and the minimum detectable difference (MDD95%) were calculated for clinical applicability. RESULTS: The Intraclass Correlation Coefficient ranged from 0.87 to 0.94 - Featuring a mean difference of 0.89 (95%CI=-0.19-1.97) to left and 0.95 (95%CI=-0.38-2.27) for the right side, with a low variation coefficient (3.31-5.91%) between the second and third days of assessment. There was a statistically significant difference between the first assessment day and the other test sessions. The Bland-Altman analyses revealed low bias with scores within the limits of agreement. Minimum detectable difference scores were between 4.02 and 5.10, and standard error of measurement between 1.75 and 2.72, depending on the movement side. CONCLUSION: The Upper Body Test presented good inter-day reliability for assessing the stability of the shoulder and pelvic girdle in young active healthy adults.


Assuntos
Extremidade Inferior/fisiopatologia , Dor da Cintura Pélvica/fisiopatologia , Ombro/fisiopatologia , Humanos , Movimento , Reprodutibilidade dos Testes , Adulto Jovem
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