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1.
Healthcare (Basel) ; 12(9)2024 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-38727489

RESUMEN

Encouraging healthy aging in postmenopausal women involves advocating for lifestyle modifications, including regular physical exercise like combined training (CT) and functional training (FT). Regarding this population, age-related alterations in body composition, such as decreased muscle mass and heightened adipose tissue, impact health. The aim of this study was to analyze the effects of FT and CT on body recomposition in postmenopausal women. About the methods, we randomly allocated 96 post-menopausal women to the FT, CT, or control group (CG). We measured body composition by bioimpedance and lower limb muscle strength by sit-to-stand test in five repetitions, respectively. The training protocol lasted 16 weeks, and we measured body composition and lower limb muscle strength every 4 weeks, totaling five assessments. Regarding results, we notice that both training groups increased lean mass from the 8th week of training. In addition, a reduction was observed in total fat percentage and an increase in appendicular lean mass from the 12th week of intervention. No differences were found for body mass. Furthermore, only the experimental groups increase muscle strength, starting from the 4th week of training. The conclusion was that FT and CT promote similar adaptations in body recomposition without affecting body mass in postmenopausal women.

2.
Front Immunol ; 15: 1277557, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38410517

RESUMEN

Introduction: In VL, a proinflammatory phenotype is typically associated with enhanced phagocytosis and a Th1 mediated immune response resulting in infection control. In contrast, an anti-inflammatory phenotype, associated with a predominant regulatory response, typically enables intracellular multiplication of Leishmania parasites and disease progression. Methods: To investigate the impact of chemotherapy on Th2 and Th17 immune responses in patients with visceral leishmaniasis (VL), we assessed all combinations of intracellular expression of IFN-γ, IL-10, IL-4 and IL-17 in the CD4+ and CD8+ T cell populations of peripheral blood mononuclear cell (PBMC) samples from patients, after antigenic stimulation with Leishmania lysate, throughout treatment and follow-up. As increases in spleen and liver sizes and decreases in hematocrit, hemogloblin, erythrocytes, monocytes, leukocytes and platelets levels are strongly related to the disease, we studied the correlations between the frequencies of T cells producing the afore mentioned cytokines, individually and in combination, and these variables, as markers of disease or cure. Results: We found that the frequency of IFN-γ-producingCD4+ T cells increased until the end of chemotherapy with Glucantime® or AmBisome ®, while IL-10, IL-4 and IL-17-producing CD4+ T cells peaked on day 7 following the start of treatment. Although the frequency of CD4+IL-17+ cells decreased during treatment an increase was observed after clinical cure. The frequency of CD4+ T cells producing only IFN-γ or IL-17 correlated with blood monocytes levels. Frequencies of double-producers of IFN-γ and IL-10 or IL-4 correlated positively with eosinophils and platelets levels. Together, this suggest that IFN-γ drives the immune response towards Th1 at cure. In contrast, and associated with disease or Th2 response, the frequency of CD4+ IL-10+ cells correlated positively with spleen sizes and negatively with circulating monocyte levels, while the frequency of CD4+ producing both IL-4 and IL-10 correlated negatively with platelets levels. The frequency of CD8+ single-producers of IFN-γ increased from day 21 to 90 while that of single-producers of IL-10 peaked on day 7, of IL-4 on day 30 and of IL-17, on day 180. IFN-γ expression in CD8+ single- and double-producers of cytokines was indicative of an immune response associated with cure. In contrast, frequencies of CD8+ double-producers of IL-4 and IL-10, IL-4 and IL-17 and IL-10 and IL-17 and producers of three and four cytokines, were associated with disease and were low after the cure. Frequencies of CD8+ T cells producing IFN-γ alone or with IL-17 were positively correlated with platelets levels. In contrast, as markers of disease: 1) frequencies of single producers of IL-10 correlated negatively with leukocytes levels, 2) frequencies of double producers of IL-4 and IL-10 correlated negatively with platelet, leukocyte, lymphocyte and circulating monocyte levels, 3) frequencies of triple-producers of IFN-γ, IL-4 and IL-10 correlated negatively with platelet, leukocyte and neutrophil levels and 4) frequencies of producers of IFN-γ, IL-4, IL-10 and IL-17 simultaneously correlated positively with spleen size, and negatively with leukocyte and neutrophil levels. Discussion: Our results confirmed that the clinical improvement of VL patients correlates with the decrease of an IL-4 and IL-10 CD4+Th2 response, the recovery of CD4+ Th1 and Th17 responses and the frequency of CD8+ single-producers of IFN-γ and double producers of IFN-γ and IL-17.


Asunto(s)
Linfocitos T CD8-positivos , Leishmaniasis Visceral , Humanos , Interleucina-10 , Interleucina-17 , Leucocitos Mononucleares/metabolismo , Interleucina-4 , Interferón gamma/metabolismo , Citocinas/metabolismo , Células Th17/metabolismo
3.
J Strength Cond Res ; 38(5): 881-890, 2024 May 01.
Artículo en Inglés | MEDLINE | ID: mdl-38219228

RESUMEN

ABSTRACT: Ben Othman, A, Anvar, SH, Aragão-Santos, JC, Behm, DG, and Chaouachi, A. Relative cross-education training effects of male youth exceed male adults. J Strength Cond Res 38(5): 881-890, 2024-Cross-education has been studied extensively with adults, examining the training effects on contralateral homologous muscles. There is less information on the cross-education effects on contralateral heterologous muscles and scant information comparing these responses between adults and youth. The objective was to compare cross-education training effects in male youth and adults to contralateral homologous and heterologous muscles. Forty-two male children (10-13-years) and 42 adults (18-21-years) were tested before and following an 8-week unilateral, dominant or nondominant arm, chest press (CP) training program or control group (14 subjects each). Unilateral testing assessed dominant and nondominant limb strength with leg press and CP 1 repetition maximum (1RM), knee extensors, elbow extensors (EE), elbow flexors, and handgrip maximum voluntary isometric contraction (MVIC) strength and shot put distance and countermovement jump height. Upper-body tests demonstrated large magnitude increases, with children overall exceeding adults ( p = 0.05- p < 0.0001, η2 : 0.51, 10.4 ± 11.1%). The dominant trained limb showed significantly higher training adaptations than the nondominant limb for the adults with CP 1RM ( p = 0.03, η2 : 0.26, 6.7 ± 11.5%) and EE ( p = 0.008, η2 : 0.27, 8.8 ± 10.3%) MVIC force. Unilateral CP training induced significantly greater training adaptations with the ipsilateral vs. contralateral limb ( p = 0.008, η2 : 0.93, 27.8 ± 12.7%). In conclusion, children demonstrated greater training adaptations than adults, upper-body strength increased with no significant lower-body improvements, and ipsilateral training effects were greater than contralateral training in adults.


Asunto(s)
Fuerza Muscular , Músculo Esquelético , Entrenamiento de Fuerza , Humanos , Masculino , Adolescente , Adulto Joven , Fuerza Muscular/fisiología , Niño , Entrenamiento de Fuerza/métodos , Músculo Esquelético/fisiología , Contracción Isométrica/fisiología , Fuerza de la Mano/fisiología
4.
Sports Med ; 54(2): 289-302, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37924459

RESUMEN

BACKGROUND: Findings from original research, systematic reviews, and meta-analyses have demonstrated the effectiveness of resistance training (RT) on markers of performance and health. However, the literature is inconsistent with regards to the dosage effects (frequency, intensity, time, type) of RT to maximize training-induced improvements. This is most likely due to moderating factors such as age, sex, and training status. Moreover, individuals with limited time to exercise or who lack motivation to perform RT are interested in the least amount of RT to improve physical fitness. OBJECTIVES: The objective of this review was to investigate and identify lower than typically recommended RT dosages (i.e., shorter durations, lower volumes, and intensity activities) that can improve fitness components such as muscle strength and endurance for sedentary individuals or beginners not meeting the minimal recommendation of exercise. METHODS: Due to the broad research question involving different RT types, cohorts, and outcome measures (i.e., high heterogeneity), a narrative review was selected instead of a systematic meta-analysis approach. RESULTS: It seems that one weekly RT session is sufficient to induce strength gains in RT beginners with < 3 sets and loads below 50% of one-repetition maximum (1RM). With regards to the number of repetitions, the literature is controversial and some authors report that repetition to failure is key to achieve optimal adaptations, while other authors report similar adaptations with fewer repetitions. Additionally, higher intensity or heavier loads tend to provide superior results. With regards to the RT type, multi-joint exercises induce similar or even larger effects than single-joint exercises. CONCLUSION: The least amount of RT that can be performed to improve physical fitness for beginners for at least the first 12 weeks is one weekly session at intensities below 50% 1RM, with < 3 sets per multi-joint exercise.


Asunto(s)
Entrenamiento de Fuerza , Humanos , Entrenamiento de Fuerza/métodos , Aptitud Física , Fuerza Muscular/fisiología , Ejercicio Físico/fisiología , Factores de Tiempo , Músculo Esquelético/fisiología
5.
Arch Gerontol Geriatr ; 119: 105303, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38128241

RESUMEN

Aging causes several changes in the body, reducing strength and muscle mass, which leads to a decline in function. Resistance training (RT) is used to counteract these changes. However, there is still ongoing debate about the optimal volume of RT in the context of aging. We systematically reviewed articles that assessed the impact of different volumes of RT on muscular strength, functional fitness, and body composition of older people. We conducted a systematic search in the PubMed/MEDLINE, Scopus, Embase, Web of Science, Cochrane Library, LILACS, PEDro, and Google Scholar databases, using keywords related to the older population and various RT volumes. We performed meta-analyses for each outcome separately using intervention time in weeks for subgroup analyses. We employed random effects models for all meta-analyses and expressed the results as standardized mean differences (Hedges' g). We included 31 studies, encompassing a total of 1.744 participants. The sample size ranged from 18 to 376, with an average size of 56 participants. Participants' ages ranged from 60 to 83 years. On average, HV-RT (High-Volume Resistance Training) induced significant adaptations in muscle strength of the upper limbs (g = 0.36; 95 % CI = 0.11-0.61) and lower limbs (g = 0.41; 95 % CI = 0.23-0.59), with superiority more pronounced after 12 weeks of training. Regarding functional fitness, there was a tendency favoring HV-RT (g = 0.41; 95 % CI = 0.23-0.59). Thus, HV-RT outperforms LV-RT (Low-Volume Resistance Training) in enhancing muscle strength, particularly in longer interventions with independent older adults.


Asunto(s)
Entrenamiento de Fuerza , Humanos , Anciano , Anciano de 80 o más Años , Músculo Esquelético/fisiología , Fuerza Muscular/fisiología , Ejercicio Físico , Composición Corporal
6.
Geriatrics (Basel) ; 8(5)2023 Aug 22.
Artículo en Inglés | MEDLINE | ID: mdl-37736883

RESUMEN

Functional training (FT) is a type of multicomponent training with emphasis on activities of daily living that stimulate different physical capacities in only one session. Dual-task training (DTT) is a type of training that simultaneously applies cognitive and motor stimuli. We investigated the effects of sixteen weeks of FT and DTT and eight weeks of detraining on older women's inhibitory control, working memory, and cognitive flexibility. Sixty-two older women (66.9 ± 5.4 years; 27.7 ± 3.9 kg/m2) completed a 16-week intervention program comprising the FT (n = 31) and DTT (n = 31), and 43 returned after the detraining period. We used the Stroop Color Word Color test to evaluate inhibitory control, the Corsi Block Test to assess working memory, and the Trail Making Test to evaluate cognitive flexibility. Only DTT reduced the congruent response time between the pre-test and post-test (d= -0.64; p < 0.001), with no difference between the post-test and the detraining values (d = 1.13; p < 0.001). Both groups reduced the incongruent response time between the pre-test and post-test (FT: d = -0.61; p = 0.002; DTT: d= -0.59; p = 0.002) without a difference between groups. There were no significant differences in working memory and cognitive flexibility. Sixteen weeks of FT and DTT increased the inhibitory control of older women but not the working memory and cognitive flexibility, and these effects persisted after eight weeks of detraining.

7.
J Sports Sci Med ; 22(2): 180-188, 2023 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-37293416

RESUMEN

Over the last decade, acute increases in range of motion (ROM) in response to foam rolling (FR) have been frequently reported. Compared to stretching, FR-induced ROM increases were not typically accompanied by a performance (e.g., force, power, endurance) deficit. Consequently, the inclusion of FR in warm-up routines was frequently recommended, especially since literature pointed out non-local ROM increases after FR. However, to attribute ROM increases to FR it must be ensured that such adaptations do not occur as a result of simple warm-up effects, as significant increases in ROM can also be assumed as a result of active warm-up routines. To answer this research question, 20 participants were recruited using a cross-over design. They performed 4x45 seconds hamstrings rolling under two conditions; FR, and sham rolling (SR) using a roller board to imitate the foam rolling movement without the pressure of the foam rolling. They were also tested in a control condition. Effects on ROM were tested under passive, active dynamic as well as ballistic conditions. Moreover, to examine non-local effects the knee to wall test (KtW) was used. Results showed that both interventions provided significant, moderate to large magnitude increases in passive hamstrings ROM and KtW respectively, compared to the control condition (p = 0.007-0.041, d = 0.62-0.77 and p = 0.002-0.006, d = 0.79-0.88, respectively). However, the ROM increases were not significantly different between the FR and the SR condition (p = 0.801, d = 0.156 and p = 0.933, d = 0.09, respectively). No significant changes could be obtained under the active dynamic (p = 0.65) while there was a significant decrease in the ballistic testing condition with a time effect (p < 0.001). Thus, it can be assumed that potential acute increases in ROM cannot be exclusively attributed to FR. It is therefore speculated that warm up effects could be responsible independent of FR or imitating the rolling movement, which indicates there is no additive effect of FR or SR to the dynamic or ballistic range of motion.


Asunto(s)
Músculos Isquiosurales , Ejercicio de Calentamiento , Humanos , Músculos Isquiosurales/fisiología , Rango del Movimiento Articular/fisiología , Estudios Cruzados , Movimiento
8.
Front Physiol ; 14: 1054424, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37035659

RESUMEN

Introduction: Aging can be associated with reduced muscle power, functional decline, and increased plasma concentrations of proinflammatory cytokines. Functional training (FT) can improve muscle power, functional fitness and reduce plasma cytokines. However, the functional training optimal volume required to produce these adaptations must be clarified. Our study analyzed the effects of multiple-set functional training (MSFT) and single-set functional training (SSFT) on postmenopausal women's muscle power, functional fitness, and inflammatory profile. Methods: Forty-three women were randomly allocated into three groups: multiple-set functional training (n = 16, age 64.13 ± 5.17), single-set functional training (n = 14, age 63.79 ± 4.88), and control group (CG, n = 13, age 64.62 ± 5.44). The bench press and squat exercises evaluated upper and lower limb muscle power. The following tests assessed functional fitness: putting on and taking off a T-shirt, gallon-jug shelf-transfer, standing up and walking around the house, five times sit-to-stand, and 400-m walk. Plasma cytokine (TNF-α, IL-6, and IL 10) concentrations were measured by flow cytometry. Results: Single-set functional training and multiple-set functional training increased upper and lower limbs muscle power and improved functional fitness, except for the putting on and taking off a T-shirt test. Multiple-set functional training reduced TNF-α and IL-6, while single-set functional training reduced only TNF-α. IL-10 was unaffected by exercise. Discussion: Single-set functional training and multiple-set functional training, therefore, promoted similar muscle power and functional fitness improvements over 24 weeks. Multiple-set functional training was more effective than single-set functional training, reducing both TNF and IL-6, while single-set functional training only decreased TNF-α.

9.
Int J Sports Phys Ther ; 18(2): 285-287, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37020433

RESUMEN

Over the last approximately 20 years, research has reported on performance impairments following prolonged durations of static stretching. This has led to a paradigm shift towards dynamic stretching. There has also been a greater emphasis using foam rollers, vibration devices, and other techniques. Recent commentaries and meta-analyses suggest that stretching need not be listed as a fitness component as other activities such as resistance training can provide similar range of motion benefits. The commentary aims to review and compare the effects of static stretching and alternative exercises for improving range of motion.

10.
Arch Gerontol Geriatr ; 111: 105005, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-36989934

RESUMEN

PURPOSE: To assess the impacts of 28 months of detraining imposed by the COVID-19 pandemic on the functional fitness of older women practicing functional or concurrent training. MATERIAL AND METHODS: A clinical trial was conducted with 16 weeks of intervention and 28 months of detraining imposed by the COVID-19 pandemic. Ninety-five participants were allocated to functional training (FT - 32), concurrent training (CT - 31), or the control group (CG - 32). All the dependent variables were measured pre-training, post-training, and after the detraining period. The functional fitness was assessed by the put on and take off a t-shirt (PTS - upper limbs), timed up and go (TUG - dynamic balance), five times sit-to-stand (FTSST - lower-limb muscle power), gallon-jug shelf-transfer (GJST - global function), and 10 m walk (W10 m - walking ability) tests. RESULTS: Sixty-three women remained after the detraining period, twenty-four in the FT (66.0 ± 3.8 years), twenty in the CT (65.0 ± 4.3 years), and nineteen in the CG (69.6 ± 5.9 years). Comparing the detraining vs. the pre-intervention, the FT and CT showed a smaller reduction than CG for the PTS (ßFT = -2.296; ßCT = -1.914), timed up and go (ßFT = -0.705; ßCT = -0.600), five times sit-to-stand (ßFT = -1.970; ßCT = -2.970), gallon-jug shelf-transfer (ßFT = -1.512; ßCT = -1.003), without differences in the 10 m walk. Also, the concurrent training showed a smaller reduction than the functional training in the FTSST (ß = 1.000). CONCLUSION: Even after a long detraining period imposed by the COVID-19 pandemic, FT and CT practices were effective strategies for maintaining the functional fitness of older women.


Asunto(s)
COVID-19 , Aptitud Física , Anciano , Femenino , Humanos , Ejercicio Físico , Fuerza Muscular , Pandemias , Caminata
11.
Sports (Basel) ; 10(10)2022 Sep 23.
Artículo en Inglés | MEDLINE | ID: mdl-36287756

RESUMEN

Exercise is an important tool against the deleterious effects of aging. Among the possibilities of exercise, bodyweight training (BWT) has been highlighted in the last years as a safe option to improve the health of older people. We compared the effects of 24 weeks of BWT and combined training (CT) on low-grade systematic inflammation and functional fitness in postmenopausal women. For this, 40 women were allocated and submitted to CT (n = 20, 64.43 ± 3.13 years, 29.56 ± 4.80 kg/m²) and BWT (n = 20, 65.10 ± 4.86 years, 28.76 ± 4.26 kg/m²). We measured inflammation by the interleukin-6 (IL-6), interleukin-10 (IL-10), and tumor necrosis factor-α (TNF-α) assessments. For functional fitness, we used tests similar to activities of daily living. At the end of the 16 weeks, data from 24 women were analyzed, CT (n = 14) and BT (n = 10). Both groups reduced TNF-α and IL-6 levels, without differences in IL-10. Regarding functional fitness, both groups demonstrated improvements in all tests after 24 weeks, except for rise from prone position and the 400-meter walk test for CT. In summary, CT and BWT are effective in reducing the plasma concentration of pro-inflammatory cytokines and improving functional fitness in postmenopausal women.

12.
Exp Gerontol ; 167: 111898, 2022 10 01.
Artículo en Inglés | MEDLINE | ID: mdl-35863693

RESUMEN

This study investigated the effects of functional (FT) and combined (CT) training on memory T cells and functional fitness of postmenopausal women. 108 participants were randomly allocated to the control (CG), FT and CT groups. Functional fitness was assessed through physical tests similar to daily activities, such as dressing on and taking off a t-shirt (DTTS), 10-meter walking and countermovement jump. The CCR7 and CD45RA surface markers were used to characterize the memory T cells. Regarding the frequency of memory T cells, both training protocols reduced the percentage of CD4+ Terminally Differentiated Effector Memory T Cells Re-Expressing CD45RA (TEMRA) (FT: -38.73 %, p = 0.0455; CT: -30.43 %, p = 0.0036) and CD8+ TEMRA cells (FT: -22.24 %, p < 0.0013; CT: -13.13 %, p = 0.0051). Also, both FT and CT increased the percentage of central memory (TCM) CD4+ (FT: +55.22 %, p = 0.0104; CT: +68.03 %, p = 0.0167) and CD8+ (FT: +142.00 %, p < 0.0001; CT: +83.76 %, p = 0.0001) T cells. Furthermore, FT and CT increased the percentages of CD8+ effector memory T cells (TEM) (FT: +63.58 %, p < 0.0001; CT: +14.12 %, p = 0.0041). Regarding functional fitness, both training protocols reduced the time required to perform the DTTS (FT: -19.71 %, p < 0.0001; CT: -14.69 %, p < 0.0001) and 10-m walk tests (FT: -13.05 %, p < 0.0001; CT: -12.83 %, p < 0.0001), in addition to improving jumping ability (FT: +29.97 %, p < 0.0001; CT: +20.00 %, p < 0.0001), both compared to the pre-test or to the CG. Therefore, both FT and CT seem to be equally effective alternatives for promoting the reduction of CD4+ and CD8+ TEMRA cells, increasing the frequency of TCM and TEM cells, and improving functional fitness of postmenopausal women.


Asunto(s)
Memoria Inmunológica , Subgrupos de Linfocitos T , Linfocitos T CD4-Positivos , Linfocitos T CD8-positivos , Femenino , Humanos , Antígenos Comunes de Leucocito , Células T de Memoria , Posmenopausia
13.
Int J Sports Med ; 43(8): 715-720, 2022 07.
Artículo en Inglés | MEDLINE | ID: mdl-35088394

RESUMEN

Vegetarian diets have become popular among athletes and active individuals and can have advantages for physical performance, but the results are still conflicting regarding muscle strength and power. The aim of this study was to evaluate the diet and physical performance of vegetarians through tests of dynamic, isometric, and relative strength; muscle power; and aerobic capacity. In this cross-sectional study, 32 vegetarians and 26 omnivores, who were physically active, were evaluated for the Healthy Eating Index and performance tested back squat, handgrip strength, isometric deadlift strength, jump with countermovement, and maximum aerobic speed (MAS). Improved diet quality (63.24±14.40 vs. 54±16.80, p<0.05), greater relative strength (1.03±0.23 vs. 0.91±0.12, p<0.05), and greater jump height (43.77±9.91 vs. 38.45±8.92, p<0.05) were found among vegetarians. No difference was seen in MAS (13.5±2 vs. 11±3, p>0.05) or isometric strength of upper limbs (77±29 vs. 70±50, p>0.05) and lower limbs (89±41 vs. 97±50, p>0.05). Thus, we conclude that vegetarians and omnivores show similar performance in strength and aerobic capacity, but in our sample, vegetarians show higher levels of relative strength and power.


Asunto(s)
Fuerza de la Mano , Vegetarianos , Estudios Transversales , Dieta/métodos , Dieta Vegetariana/métodos , Humanos , Extremidad Inferior
14.
Sports (Basel) ; 9(11)2021 Oct 20.
Artículo en Inglés | MEDLINE | ID: mdl-34822344

RESUMEN

Empirically, it is widely discussed in "Cross" modalities that the pacing strategy developed by an athlete or trainee has a significant impact on the endurance performance in a WOD in the AMRAP, EMOM, or FOR TIME model. We can observe at least six pacing strategies adopted during the cyclical modalities in the endurance performance in the scientific literature. However, besides these modalities, exercises of acyclical modalities of weightlifting and gymnastics are performed in the "Cross" modalities. These exercises may not allow the same pacing strategies adopted during cyclic modalities' movements due to their motor characteristics and different intensity and level of effort imposed to perform the motor gesture. In addition to the intensity and level of effort that are generally unknown to the coach and athlete of the "Cross" modalities, another factor that can influence the adoption of a pacing strategy during a WOD in the AMRAP, EMOM, or FOR TIME model is the task endpoint knowledge, which varies according to the training model used. Thus, our objective was to evaluate situations in which these factors can influence the pacing strategies adopted in a self-regulated task with cyclic and acyclic modalities movements during an endurance workout in the AMRAP, EMOM, and FOR TIME model. Given the scarcity of studies in the scientific literature and the increasing discussion of this topic within the "Cross" modalities, this manuscript can help scientists and coaches better orient their research problems or training programs and analyze and interpret new findings more accurately.

15.
Exp Gerontol ; 153: 111504, 2021 10 01.
Artículo en Inglés | MEDLINE | ID: mdl-34343632

RESUMEN

PURPOSE: To evaluate the effects of functional and concurrent training on immune function and functional fitness in postmenopausal women. MATERIALS AND METHODS: A randomized controlled trial was performed on 108 women aged 60 or older who were randomly assigned among the groups: control group (CG: n = 40; 63.88 ± 3.64 years); functional training (FT: n = 32; 63.88 ± 3.79 years); and concurrent training (CT: n = 36; 64.83 ± 4.00 years). Immune function was measured by the expression of the T-lymphocyte function-related surface markers (CD28 and CD57). Functional fitness was assessed using physical tests similar to daily activities, i.e., five times sit to stand, timed up and go, and gallon-jug shelf-transfer. RESULTS: Regarding immune function, there was only a time effect, without between-group differences. Specifically, FT and CT show a reduction and increase in CD4+ and CD8+ T cells, respectively, without impairment in the subpopulations analyzed, while CG showed a reduction in naive T cells (CD8+CD28+). For functional fitness tests, there was a time × group interaction effect for all tests, the FT and CT were superior to the CG, with FT showing differences after the fourth week, while the CT showed this effect after the eighth week of intervention. CONCLUSION: FT and CT do not impair immune function and similarly improve functional fitness in postmenopausal women. CLINICAL TRIALS REGISTRY: RBR-2d56bt.


Asunto(s)
Linfocitos T CD8-positivos , Posmenopausia , Ejercicio Físico , Femenino , Humanos , Inmunidad , Aptitud Física
16.
Exp Gerontol ; 135: 110920, 2020 07 01.
Artículo en Inglés | MEDLINE | ID: mdl-32151735

RESUMEN

BACKGROUND: Aging is a natural process that, even in the nonattendance of complex diseases, is associated with a numerous behavioral change that attributes reduced muscle mass, power, strength and function. In addition, aging linked to low-grade inflammatory status, characterized by increased plasma concentrations of inflammatory cytokines such as TNF-α and IL-6. Physical exercise is the main non-pharmacological strategy for improving the physical fitness of the aged individuals. However, it is still controversial whether exercise can reduce aging-mediated inflammation. OBJECTIVE: To analyze the effects of functional (FT) and traditional (TT) training practice on muscle power and inflammatory profile in physically active older women. METHODS: The study has been performed for twenty-six weeks in which twenty-four weeks utilized for training sessions and two weeks for physical and biochemical assessments. Forty-three older women (age FT: 64.25 ± 4.70, range: 60-75; TT: 64.90 ± 3.03, range: 60-71; Control: 65.91 ± 5.79, range: 60-75) were randomly divided into three groups: Functional (FT; n = 16); Traditional (TT; n = 16) training groups; and Control Group (CG; n = 11) respectively. Muscle power tests were performed by push (Bench press) and squatting (Squat) actions. The jumping ability was performed through Counter Movement Jump (CMJ). In addition, isometric strength were assessed by Hand Grip Test. Plasma cytokine concentration was measured using flow cytometry. RESULTS: Functional and traditional training sessions subjected to aged women demonstrated a significant enhancement in their physical activity and muscle power. The trained individuals from above two groups showed significant improvements in all analyzed parameters excluding hand-grip. Functional and traditional training exercise reduced the plasma concentrations of TNF-α (FT: p = 0.0001; TT: p = 0.0410) and whereas FT group has reduced IL-6 (p = 0.0072), but did not affect the alterations of pre and post measurements of IL-2 (FT: p = 0.0651; TT: p = 0.2146) and IL-10 values (FT: p = 0.2658; TT: p = 0.3116). There was no significant difference in any of the test parameters between FT and TT groups. CONCLUSION: The functional and traditional training practices showed equivalent beneficial outcomes by increasing muscle power and reducing systemic markers associated with inflammation.


Asunto(s)
Citocinas , Fuerza de la Mano , Fuerza Muscular , Músculo Esquelético/fisiología , Entrenamiento de Fuerza , Anciano , Femenino , Humanos , Persona de Mediana Edad , Músculos
17.
J Aging Res ; 2019: 5315376, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31871788

RESUMEN

AIM: To analyze the efficacy of functional training (FT) and traditional training (TT) in body composition and determinants of physical fitness in older women. METHODS: This is a randomized clinical trial in which participants performed two 12-week periods of different training methods, separated by eight weeks of washout. Forty-eight physically active older women (≥60 years of age) completed the intervention in three groups: (i) program that started with FT and ended with TT (FT ⟶ TT: n = 19), (ii) program that started with TT and ended with FT (TT ⟶ FT: n = 13), and (iii) stretching group (SG: n = 16). Before and after the interventions, the body composition was evaluated by bioimpedance, the physical fitness by battery of the Senior Fitness Test, and the quality of movement by Functional Movement Screen®. RESULTS: Compared with SG, TT ⟶ FT and FT ⟶ TT promoted significant improvements in balance/agility (13.60 and 13.06%, respectively) and upper limb strength (24.91 and 16.18%). Only FT showed a statistically significant improvement in the strength of the lower limbs, cardiorespiratory capacity, and movement patterns when compared with SG considering the adaptations of methods separately. CONCLUSION: The programs used are equally effective in increasing physical fitness for daily activities in physically active older women, and therefore, they may be complementary to combat some of the deleterious effects of senescence.

18.
Rev. bras. cineantropom. desempenho hum ; 19(5): 535-544, Sept.-Oct. 2017. tab, graf, ilus
Artículo en Inglés | LILACS | ID: biblio-897870

RESUMEN

Abstract Aging causes a reduction in the adaptive capacity of the organism. Therefore, there is a decrease in physical fitness, making it difficult to perform basic movements and the development of muscular power. Thus, to minimize this reduction, functional and traditional training can both be used; however there is no clarity about which is most effective. The aim of this study was to identify the influence of functional and traditional training on muscle power, quality of movement and quality of life in the elderly. Fortyfour older women were randomly divided into functional group (FG n=18), traditional group (TG n=15) and control group (CG n=11). Thirty-six sessions lasting 50 minutes were performed. Quality of life (WHOQOL-bref ), quality of movement (FMS) and muscular power were evaluated. FG and TG increased significantly in relation to control group and to the initial FMS values. In FG and TG, muscle power significantly improved compared to pre-test, but not in relation to the control group. Regarding quality of life, only FG presented significant improvement. Both applied methods demonstrate the ability to improve the quality of movement and muscle power. However, functional training achieved better results in quality of life and movement.


Resumo O envelhecimento ocasiona uma redução na capacidade adaptativa do organismo. Por conseguinte, há uma diminuição na aptidão física dificultando a realização de movimentos básicos e o desenvolvimento de potência muscular. Desse modo, entre a formas de minimizar essa redução tanto treinamento funcional quanto o tradicional podem ser utilizado, contudo não há clareza sobre qual o mais eficaz. Objetivou-se identificar a influência dos treinamentos funcional e tradicional na potência muscular, qualidade de movimento e de vida em idosas. Quarenta e quatro idosas foram randomicamente divididas em grupo funcional (GF n=18), tradicional (GT n=15) e controle (GC n=11). Foram realizadas 36 sessões com duração de 50 minutos. Foram avaliadas a qualidade de vida (WHOQOL-bref), qualidade de movimento (FMS) e potência muscular. O GF e GT aumentaram significativamente em relação ao grupo controle e aos valores iniciais no FMS. Na potência muscular os grupos GF e GT melhoraram significativamente comparado ao pré-teste, mas não em relação ao controle. Na qualidade de vida apenas o GF apresentou melhora significativa. Ambos os métodos aplicados demostram a capacidade de melhorar a qualidade de movimento e potência muscular. Contudo o treinamento funcional obteve resultados superiores na qualidade de vida e de movimento.


Asunto(s)
Humanos , Femenino , Anciano , Fuerza Muscular , Entrenamiento de Fuerza/métodos , Salud del Anciano
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