CYBERMED LIFE - ORGANIC  & NATURAL LIVING

Cybermedlife - Therapeutic Actions Exercise Resistance Training

Anti-inflammatory effects of vitamin D and resistance training in men with type 2 diabetes mellitus and vitamin D deficiency: a randomized, double-blinded, placebo-controlled clinical trial.

Abstract Title: Anti-inflammatory effects of vitamin D and resistance training in men with type 2 diabetes mellitus and vitamin D deficiency: a randomized, double-blinded, placebo-controlled clinical trial. Abstract Source: J Diabetes Metab Disord. 2019 Dec ;18(2):323-331. Epub 2019 Jun 24. PMID: 31890657 Abstract Author(s): Ali Dadrass, Khalid Mohamadzadeh Salamat, Kamaladdin Hamidi, Kamal Azizbeigi Article Affiliation: Ali Dadrass Abstract: Objectives: The present study aimed to investigate the anti-inflammatory effects of vitamin D and resistance training in men with type 2 diabetes mellitus and vitamin D deficiency. Design: This study was a randomized, placebo-controlled, double-blinded clinical trial.: IRCT20190204042621N1. Participants: Forty-eight patients with type 2 diabetes aged 40-65 (from a total of 52 volunteers in Ardabil diabetes clinic) were randomly assigned to either the vitamin D supplementation with resistance training group (VD + RT: = 12), the resistance training group (RT: = 12), the vitamin D supplementation group (VD: = 12), or the control group (CON: = 12). Intervention: The subjects in VD group took vitamin D supplements at 50000 IU per 2 weeks for 3 months; the subjects in RT group exercised 3 times per week for 12 weeks; and the subjects in VD + RT group participated in both treatments. Subjects in CON group were asked to maintain normal daily life pattern for the duration of the study. Measurements: Serum Interleukin-6 (IL-6), Tumor Necrosis Factor-alpha (TNF-α) and C-reactive protein (CRP) levels were determined at pre and post-test and the data were compared among the four groups and between two tests (4 × 2) using two-way ANOVA with repeated measures. Results: IL-6 decreased significantly ( = 0.001) in all groups (VD + RT = % -71.73, RT = % -65.85, VD = % -61.70). TNF-α decreased significantly ( = 0.001) in VD + RT (% -44.90) and RT (% -40) groups. CRP showed no significant change in any group ( > 0.05). Conclusion: Results demonstrated that vitamin D supplementation in addition to resistance training had positive effects on some inflammatory markers in T2D and vitamin D deficient men. Vitamin D supplementation was especially effective when it was complemented with exercise training. Article Published Date : Nov 30, 2019

Acute Effects of Caffeine Supplementation on Movement Velocity in Resistance Exercise: A Systematic Review and Meta-analysis.

Abstract Title: Acute Effects of Caffeine Supplementation on Movement Velocity in Resistance Exercise: A Systematic Review and Meta-analysis. Abstract Source: Sports Med. 2019 Oct 23. Epub 2019 Oct 23. PMID: 31643020 Abstract Author(s): Javier Raya-González, Tara Rendo-Urteaga, Raúl Domínguez, Daniel Castillo, Alejandro Rodríguez-Fernández, Jozo Grgic Article Affiliation: Javier Raya-González Abstract: BACKGROUND: Several studies investigated the effects of caffeine supplementation on movement velocity in resistance exercise. However, these studies presented inconsistent findings. OBJECTIVE: This paper aimed to: (a) review the studies that explored the effects of caffeine supplementation on movement velocity in resistance exercise; and (b) pool their results using a meta-analysis. METHODS: A search for studies was performed through seven databases. Random-effects meta-analyses of standardized mean differences (SMD) were performed to analyze the data. Sub-group meta-analyses explored the effects of caffeine on different velocity variables (i.e., mean and peak velocity), different loads (i.e., low, moderate, and high loads), and upper- and lower-body exercises. RESULTS: Twelve studies met the inclusion criteria. In the main meta-analysis, in which we pooled all available studies, the SMD favored the caffeine condition (SMD = 0.62; 95% confidence interval [CI]: 0.39-0.84; p < 0.001). Sub-group analyses indicated that caffeine significantly enhances mean (SMD = 0.80; 95% CI: 0.48-1.12; p < 0.001) and peak velocity (SMD = 0.41; 95% CI: 0.08-0.75; p = 0.014), movement velocity with low loads (SMD = 0.78; 95% CI: 0.41-1.14; p < 0.001), moderate loads (SMD = 0.58; 95% CI: 0.25-0.91; p = 0.001), and high loads (SMD = 0.70; 95% CI: 0.33-1.07; p < 0.001), as well as in lower-body (SMD = 0.82; 95% CI: 0.42-1.23; p < 0.001) and upper-body exercises (SMD = 0.59; 95% CI: 0.37-0.82; p < 0.001). CONCLUSION: Acute caffeine supplementation is highly ergogenic for movement velocity in resistance exercise. Sub-group analyses indicated that caffeine ingestion is ergogenic: (a) for both mean and peak velocity; (b) for movement velocity when exercising with low, moderate and high loads, and (c) for movement velocity in both lower- and upper-body exercises. Previous meta-analyses that explored the effects of caffeine on various aspects of resistance exercise performance (i.e., muscular strength and endurance) reported trivial to moderate ergogenic effects (effect size range: 0.16-0.38). In the present meta-analysis, the pooled effect size ranged from 0.41 to 0.82. From a resistance exercise performance standpoint, this suggests that caffeine has the most pronounced performance-enhancing effects on movement velocity. Article Published Date : Oct 22, 2019

A Randomized Study Examining the Effects of Mild-to-Moderate Group Exercises on Cardiovascular, Physical, and Psychological Well-Being in Patients With Heart Failure.

Abstract Title: A Randomized Study Examining the Effects of Mild-to-Moderate Group Exercises on Cardiovascular, Physical, and Psychological Well-Being in Patients With Heart Failure. Abstract Source: J Cardiopulm Rehabil Prev. 2019 Aug 7. Epub 2019 Aug 7. PMID: 31397771 Abstract Author(s): Laura S Redwine, Kathleen Wilson, Meredith A Pung, Kelly Chinh, Thomas Rutledge, Paul J Mills, Barbara Smith Article Affiliation: Laura S Redwine Abstract: PURPOSE: To compare 2 mild-to-moderate group exercises and treatment as usual (TAU) for improvements in physical function and depressive symptoms. METHODS: Patients with heart failure (n = 70, mean age = 66 yr, range = 45-89 yr) were randomized to 16 wk of tai chi (TC), resistance band (RB) exercise, or TAU. RESULTS: Physical function differed by group from baseline to follow-up, measured by distance walked in the 6-min walk test (F = 3.19, P = .03). Tai chi participants demonstrated a nonsignificant decrease of 162 ft (95% confidence interval [CI], 21 to -345, P = .08) while distance walked by RB participants remained stable with a nonsignificant increase of 70 ft (95% CI, 267 to -127, P = .48). Treatment as usual group significantly decreased by 205 ft (95% CI, -35 to -374, P = .02) and no group differences occurred over time in end-systolic volume (P = .43) and left ventricular function (LVEF) (P = .67). However, groups differed over time in the Beck Depression Inventory (F = 9.2, P<.01). Both TC and RB groups improved (decreased) by 3.5 points (95% CI, 2-5, P<.01). Treatment as usual group decreased insignificantly 1 point (95% CI, -1 to 3, P = .27). CONCLUSIONS: Tai chi and RB participants avoided a decrease in physical function decrements as seen with TAU. No groups changed in cardiac function. Both TC and RB groups saw reduced depression symptoms compared with TAU. Thus, both TC and RB groups avoided a decrease in physical function and improved their psychological function when compared with TAU. Article Published Date : Aug 06, 2019

Resistance training improves cardiovascular autonomic control and biochemical profile of rats exposed to Western diet in the perinatal period📎

Abstract Title: Resistance training improves cardiovascular autonomic control and biochemical profile of rats exposed to Western diet in the perinatal period. Abstract Source: Rev Port Cardiol. 2019 May ;38(5):337-345. Epub 2019 Jun 18. PMID: 31227291 Abstract Author(s): Michael Nadson Santos Santana, Vitor Ulisses De Melo, Fabricio Nunes Macedo, André Sales Barreto, Robervan Vidal-Santos, Mario Matiotti Neto, Marcio Roberto Viana Dos Santos, Valter Joviniano Santana-Filho Article Affiliation: Michael Nadson Santos Santana Abstract: INTRODUCTION AND OBJECTIVES: Consumption of a Western diet during the perinatal period is associated with development of cardiovascular disease. Resistance training (RT) has been used to treat cardiovascular disorders. The aim of this work was to assess the effect of RT on cardiometabolic disorders in rats exposed to a Western diet in the perinatal period. METHODS: Female Wistar rats were fed with control or Western diet during pregnancy and lactation. The pups were divided into three groups: Control (C), Western Diet Sedentary (WDS) and Western Diet + RT (WDRT). At 60 days of age, all animals started the RT protocol (five times a week for four weeks). At the end, blood pressure was recorded for analysis of heart rate variability and baroreflex sensitivity (BRS). Blood samples were collected for biochemical analysis. RESULTS: RT reduced blood pressure and vascular sympathetic modulation and increased BRS. There were improvements in biochemical profile, with reductions in fasting blood glucose, total cholesterol and low-density lipoprotein, and an increase in high-density lipoprotein. CONCLUSION: RT led to beneficial adaptations in the cardiovascular system, mediated by changes in the mechanisms of autonomic control and biochemical profile of animals exposed to a Western diet in the perinatal period. Article Published Date : Apr 30, 2019

Resistance training restores metabolic alterations induced by monosodium glutamate in a sex-dependent manner in male and female rats.

Abstract Title: Resistance training restores metabolic alterations induced by monosodium glutamate in a sex-dependent manner in male and female rats. Abstract Source: J Cell Biochem. 2019 Mar 27. Epub 2019 Mar 27. PMID: 30916837 Abstract Author(s): Caroline B Quines, Natália S Jardim, Paulo Cesar O Araujo, José Luiz Cechella, Vinicius C Prado, Cristina W Nogueira Article Affiliation: Caroline B Quines Abstract: Despite resistance exercises being associated with health outcomes, numerous issues are still unresolved and further research is required before the exercise can faithfully be prescribed as medicine. The goal of this study was to investigate whether there are sex differences in resistance training effects on metabolic alterations induced by monosodium glutamate (MSG), a model of obesity, in male and female rats. Male and female Wistar rats received MSG (4 g/kg body weight/day, s.c.) from postnatal day 1 to 10. After 10 days from MSG administration, the rats were separated into two groups: MSG-sedentary and MSG-exercised. At postnatal day 60, the animals started a resistance training protocol in an 80 degrees inclined vertical ladder apparatus andperformed it for 7 weeks. Control rats received saline solution and were divided in saline-sedentary and saline-exercised. Resistance training restored all plasma biochemical parameters (glucose, cholesterol, triglycerides, aspartate aminotransferase, and alanine aminotransferase) increased in maleand female rats treated with MSG. The MSG administration induced hyperglycemia associated with a decrease in the skeletal muscle glucose transporter 4 (GLUT4) levels and accompanied by deregulation in proteins, G-6Pase, and tyrosine aminotransferase, involved in hepatic glucose metabolism of male and female rats. MSG induced dyslipidemia and lipotoxicity in the liver and skeletal muscle of male rats. Regarding female rats, lipotoxicity was found only in the skeletal muscle. The resistance training had beneficial effects against metabolic alterations induced by MSG in male and female rats, through regulation of proteins (GLUT2, protein kinase B, and GLUT4) involved in glucose and lipid pathways in the liver and skeletal muscle. Article Published Date : Mar 26, 2019

High-intensity exercise during chemotherapy induces beneficial effects 12 months into breast cancer survivorship📎

Abstract Title: High-intensity exercise during chemotherapy induces beneficial effects 12 months into breast cancer survivorship. Abstract Source: J Cancer Surviv. 2019 Mar 25. Epub 2019 Mar 25. PMID: 30912010 Abstract Author(s): Sara Mijwel, Anna Jervaeus, Kate A Bolam, Jessica Norrbom, Jonas Bergh, Helene Rundqvist, Yvonne Wengström Article Affiliation: Sara Mijwel Abstract: PURPOSE: Whether the benefits of exercise during chemotherapy continue into survivorship is not well-known. Here, the aim was to examine the effects of two exercise interventions on self-reported health-related and objectively measured physiological outcomes 12 months following commencement of chemotherapy. METHODS: Two hundred and forty women with breast cancer stage I-IIIa were randomized to 16 weeks of high-intensity aerobic interval training combined with either resistance training (RT-HIIT), or moderate-intensity aerobic training (AT-HIIT), or to usual care (UC). PRIMARY OUTCOME: cancer-related fatigue (CRF); secondary outcomes: quality of life (QoL), symptom burden, muscle strength, cardiorespiratory-fitness, body mass, and return to work. RESULTS: Compared to UC, both RT-HIIT and AT-HIIT significantly counteracted increases in total CRF (ES = - 0.34; ES = - 0.10), daily life CRF (ES=-0.76; ES=-0.50, and affective CRF (ES=-0.60; ES=-0.39). Both RT-HIIT and AT-HIIT reported significantly lower total symptoms (ES = - 0.46, ES = - 0.46), and displayed gains in lower limb (ES = 0.73; ES = 1.03) and handgripmuscle strength (surgery side ES = 0.70, ES = 0.71; non-surgery side ES = 0.57, ES = 0.59). AT-HIIT displayed significant reductions in body mass (ES = - 0.24), improved QoL: role (ES = 0.33) and emotional functioning (ES = 0.40), and a larger proportion had returned towork (p = 0.02) vs UC. CONCLUSION: These findings emphasize the beneficial effects of supervised high-intensity exercise during chemotherapy to improve the health and to reduce societal costs associated with prolonged sick leave for patients with breast cancer several months following chemotherapy. IMPLICATIONS FOR CANCER SURVIVORS: These findings provide important information with substantial positive consequences for breast cancer survivorship. High-intensity exercise programs during chemotherapy and support to maintain physical activity can be a powerful strategy to manage or prevent many of the short- and long-term adverse effects of treatment for the increasing cohort of cancer survivors. Article Published Date : Mar 24, 2019

The effects of resistance training on bone mineral density and bone quality in type 2 diabetic rats📎

Abstract Title: The effects of resistance training on bone mineral density and bone quality in type 2 diabetic rats. Abstract Source: Physiol Rep. 2019 Mar ;7(6):e14046. PMID: 30916457 Abstract Author(s): Aoi Ikedo, Kohei Kido, Satoru Ato, Koji Sato, Ji-Won Lee, Satoshi Fujita, Yuuki Imai Article Affiliation: Aoi Ikedo Abstract: Resistance training (RT) has been known to be effective in maintaining and improving bone strength, which is based on bone mineral density (BMD) and bone quality. However, it is not clear whether RT is effective in improving bone strength in patients with type-2 diabetes mellitus (T2DM), who have a high risk of fracture. Therefore, we tested the effects of a 6-week RT regimen using percutaneous electrical stimulation in T2DM model rats, male Otsuka Long-Evans Tokushima Fatty (OLETF), and its control, Long-Evans Tokushima Otsuka (LETO). After 6 weeks of RT, tibial BMD in RT legs was significantly higher than that in control (CON) legs in both groups. In diaphyseal cortical bone, bone area/tissue area, and cortical thickness was significantly increased in RT legs compared with CON legs in both groups. Cortical porosity was highly observedin OLETF compared with LETO, but RT improved cortical porosity in both groups. Interestingly, trabecular number, trabecular thickness and trabecular space as well as BMD and bone volume/tissue volume in proximal tibial metaphyseal trabecular bone were significantly improved in RT legs compared withCON legs in both groups. In contrast, connectivity density and structural model index were not affected by RT. These results indicate that the 6-week RT regimen effectively increased BMD and improved bone quality in T2DM model rats as well as control rats. Therefore, RT may have the potential to improve bone strength and reduce fracture risk, even in patients with T2DM. Article Published Date : Feb 28, 2019

Combined aerobic and resistance training, and incidence of diabetes: A retrospective cohort study in Japanese older women📎

Abstract Title: Combined aerobic and resistance training, and incidence of diabetes: A retrospective cohort study in Japanese older women. Abstract Source: J Diabetes Investig. 2018 Dec 18. Epub 2018 Dec 18. PMID: 30561143 Abstract Author(s): Susumu S Sawada, Yuko Gando, Ryoko Kawakami, Steven N Blair, I-Min Lee, Yoshifumi Tamura, Hitomi Tsuda, Hikaru Saito, Motohiko Miyachi Article Affiliation: Susumu S Sawada Abstract: AIMS/INTRODUCTION: To investigate the relationship between combined aerobic and resistance training, and the incidence of type 2 diabetes mellitus. MATERIALS AND METHODS: The present study included 10,680 Japanese women. Participants enrolled between 2005 and 2010, and were followed up until 2014. The frequency of combined training was counted for the first 3 months, the 6th month and the 9th month. In 2014, women reported whether or not they had diabetes, as well as the year of developing diabetes. Hazard ratios and 95% confidence intervals (CI) for the incidence of type 2 diabetes were obtained using Cox proportional hazard models. RESULTS: The median duration of follow up was 5 years, with 166 women developing type 2 diabetes. Using the lowest frequency of training group (1st quartile) as the reference, the hazard ratios for the second through fourth quartiles was as follows: 0.95 (95% CI 0.64-1.41), 0.73 (95% CI 0.48-1.13) and 0.69 (95% CI 0.44-1.07), respectively (P for trend = 0.116). After adjustment for age, body mass index and thigh circumference, the hazard ratios were: 0.84 (95% CI 0.56-1.26), 0.69 (95% CI 0.45-1.06) and 0.61 (95% CI 0.39-0.95), respectively (P for trend = 0.040). CONCLUSIONS: A higher frequency of combined aerobic and resistance training is associated with a lower risk of developing type 2 diabetes in Japanese women. Article Published Date : Dec 17, 2018

Effects of 2 Types of Resistance Training Models on Obese Adolescents' Body Composition, Cardiometabolic Risk, and Physical Fitness.

Abstract Title: Effects of 2 Types of Resistance Training Models on Obese Adolescents' Body Composition, Cardiometabolic Risk, and Physical Fitness. Abstract Source: J Strength Cond Res. 2018 Dec 14. Epub 2018 Dec 14. PMID: 30557175 Abstract Author(s): Braulio Henrique Magnani Branco, Isabelle Zanquetta Carvalho, Humberto Garcia de Oliveira, Ana Paula Fanhani, Michelle Cardoso Machado Dos Santos, Leonardo Pestillo de Oliveira, Sara Macente Boni, Nelson Nardo Article Affiliation: Braulio Henrique Magnani Branco Abstract: Magnani Branco, BH, Carvalho, IZ, Garcia de Oliveira, H, Fanhani, AP, Machado dos Santos, MC, Pestillo de Oliveira, L, Macente, SB, and Nelson, NJ. Effects of 2 types of resistance training models on obese adolescents' body composition, cardiometabolic risk, and physical fitness. J Strength Cond Res XX(X): 000-000, 2018-The main objective of this study was to investigate the effects of 2 types of resistance training (RT) models in conjunction with interdisciplinary interventions by other health professionals to reduce the body fat and cardiometabolic risk of obese adolescents while improving their general health-related physical fitness. The 12-week analyses involved 18 male adolescents who were split into 2 groups (weightlifting: n = 9 and functional: n = 9), with equalization according to the primary muscle group (whenever possible), the effort:pause ratio, and intensity. The results showed reductions in fat mass and body fat, as well as in waist and hip circumferences (p<0.05) after the intervention period. However, no significant differences were observed in terms of the body mass, body mass index, neck circumference, systolic and diastolic blood pressures, and for lean mass (p>0.05) after the respective period. Maximal isometric strength, abdominal strength resistance, flexibility, and maximal oxygen consumption all produced significant increases after the interventions (p<0.05). There were reductions in low-density lipoproteins and triglyceride levels after the intervention period (p<0.05). For fasting glycemia, high-density lipoproteins, and alanine aminotransferase, no differences were observed (p>0.05). In addition, no differences were observed in rating of perceived recovery, internal training load, or caloric intake (p>0.05). With the results presented, it is concluded that both RT methods were effective at reducing both fat mass and body fat, thus improving health-related physical fitness components and decreasing cardiometabolic risk. Article Published Date : Dec 13, 2018

Tai Chi Combined With Resistance Training for Adults Aged 50 Years and Older: A Systematic Review.

Abstract Title: Tai Chi Combined With Resistance Training for Adults Aged 50 Years and Older: A Systematic Review. Abstract Source: J Geriatr Phys Ther. 2018 Dec 10. Epub 2018 Dec 10. PMID: 30531200 Abstract Author(s): Meiling Qi, Wendy Moyle, Cindy Jones, Benjamin Weeks Article Affiliation: Meiling Qi Abstract: BACKGROUND AND PURPOSE: Despite Tai Chi and resistance training being recommended as suitable exercise for older adults, there are no systematic reviews synthesizing the effectiveness of a combination of Tai Chi and resistance training on health promotion of older adults. This study aimed to review the existing literature regarding the effect of Tai Chi and resistance training on physical health, mental health, pain, health-related quality of life, and age-related impairment in adults aged 50 years and older. METHODS: A systematic review was conducted to report the health outcomes of Tai Chi combined with resistance training research in adults aged 50 years and older. Articles were identified by searching PubMed, Scopus, Web of Science, CINAHL, MEDLINE, Physiotherapy Evidence Database (PEDro), and the Cochrane library using search terms representing"Tai Chi"and"resistance"and"older adults."Quantitative experimental studies with participants aged 50 years and older, where one of the interventions was Tai Chi and resistance training, were included. RESULTS AND DISCUSSION: The literature search yielded 648 articles from which 7 met the inclusion criteria. Collectively, the studies involved 703 participants aged 50 years and older, including healthy older adults, older adults with history of falls, postmenopausal women, and people diagnosed with end-stage hip osteoarthritis. Studies included different Tai Chi forms in combination with various types of resistance training. Training sessions were 2 to 7.5 h/wk and lasted between 12 weeks and 12 months. After long-term Tai Chi and resistance training, the participants showed significant improvement in upper and lower extremity muscle strength, aerobic endurance, balance, and mobility. However, 1 study failed to show improvement in Functional Movement Screening compared with traditional Tai Chi and nonexercise groups. No study examined the effects of Tai Chi and resistance training on health-related quality of life, fear of falling, or mental health in adults aged 50 years and older. CONCLUSIONS: The review supports that Tai Chi in combination with resistance training improves physical function and muscle strength in adults aged 50 years and older. Article Published Date : Dec 09, 2018

Cardioprotective effect of resistance training and Crataegus oxyacantha extract on ischemia reperfusion-induced oxidative stress in diabetic rats.

Abstract Title: Cardioprotective effect of resistance training and Crataegus oxyacantha extract on ischemia reperfusion-induced oxidative stress in diabetic rats. Abstract Source: Biomed Pharmacother. 2018 Apr ;100:455-460. Epub 2018 Feb 22. PMID: 29477090 Abstract Author(s): Kamal Ranjbar, Ebrahim Zarrinkalam, Iraj Salehi, Alireza Komaki, Bayan Fayazi Article Affiliation: Kamal Ranjbar Abstract: Discovering an effective approach to limit infarction size after ischemia-reperfusion has a clinical importance in diabetics. We investigated the anti-myocardial ischemia-reperfusion injury effect of resistance training and Crataegus oxyacantha extract on diabetic rats. To this end, 50 male Wistar rats were randomly divided into 5 groups: the sedentary control (SC), sedentary diabetic (SD), resistance trained diabetic (RD), diabetic plus C. oxyacantha extract treatment (CD) and resistance trained diabetic plus C. oxyacantha extract treatment (RCD) groups. Animals in trained groups were subjected to progressive resistance training program with the use of a ladder (5 days/week, for 10 weeks). C. oxyacantha extract rats were treated with 100 mg/kg body weight of the extract using a gavage every day for 10 weeks. After treatments, rats were subjected to ischemia via LAD artery ligation for 30 min followed by 90 min reperfusion. The heart was collected following the ischemia-reperfusion and analyzed for oxidative stress and ischemia-reperfusion injury. Compared to the SC group, LDH, CK-MB and infarction size in the SD group were significantly higher, whereas injury indices in the RCD group were significantly lower than those in the SD group. GPx and MPO levels after reperfusion increased and decreased, respectively in response to training and C. oxyacantha. These findings suggest that 10 weeks resistance training and C. oxyacantha can synergistically decrease ischemia-reperfusion injury, and this mechanism may be related to a reduction in oxidative stress which is normally associated with ischemia-reperfusion. Article Published Date : Mar 31, 2018

Polyphenol supplementation alters intramuscular apoptotic signaling following acute resistance exercise📎

Abstract Title: Polyphenol supplementation alters intramuscular apoptotic signaling following acute resistance exercise. Abstract Source: Physiol Rep. 2018 Jan ;6(2). PMID: 29380956 Abstract Author(s): Jeremy R Townsend, Jeffrey R Stout, Adam R Jajtner, David D Church, Kyle S Beyer, Joshua J Riffe, Tyler W D Muddle, Kelli L Herrlinger, David H Fukuda, Jay R Hoffman Article Affiliation: Jeremy R Townsend Abstract: The purpose of this study was to examine the effects of 28-days of supplementation with an aqueous proprietary polyphenol blend (PPB) sourced from Camellia sinensis on intramuscular apoptotic signaling following an acute lower-body resistance exercise protocol and subsequent recovery. Untrained males (n = 38, 21.8 ± 2.7 years, 173.4 ± 7.9 cm, 77.6 ± 14.6 kg) were randomized to PPB (n = 14), placebo (PL; n = 14) or control (CON; n = 10). Participants completed a lower-body resistance exercise protocol comprised of the squat, leg press, and leg extension exercises. Skeletal muscle microbiopsies were obtained from the vastus lateralis preexercise (PRE), 1-h (1HR), 5-h (5HR), and 48-h (48HR) post-resistance exercise. Apoptotic signaling pathways were quantified using multiplex signaling assay kits to quantify total proteins (Caspase 3, 8, 9) and markers of phosphorylation status (JNK, FADD, p53, BAD, Bcl-2). Changes in markers of muscle damage and intramuscular signaling were analyzed via separate repeated measures analysis of variance (ANOVA). Change in Bcl-2 phosphorylation at 1H was significantly greater in PL compared to CON (P = 0.001). BAD phosphorylation was significantly elevated at 5H in PL compared to PPB (P = 0.015) and CON (P = 0.006). The change in JNK phosphorylation was significantly greater in PPB (P = 0.009), and PL (P = 0.017) compared to CON at 1H, while the change for PL was elevated compared to CON at 5H (P = 0.002). A main effectwas observed (P < 0.05) at 1H, 5H, and 48H for p53 and Caspase 8, with Caspase 3 and Caspase 9 elevated at 48H. These data indicate that chronic supplementation with PPB alters apoptotic signaling in skeletal muscle following acute muscle-damaging resistance exercise. Article Published Date : Dec 31, 2017

Resistance exercise improves cardiac function and mitochondrial efficiency in diabetic rat hearts.

Abstract Title: Resistance exercise improves cardiac function and mitochondrial efficiency in diabetic rat hearts. Abstract Source: Pflugers Arch. 2017 Oct 14. Epub 2017 Oct 14. PMID: 29032504 Abstract Author(s): Tae Hee Ko, Jubert C Marquez, Hyoung Kyu Kim, Seung Hun Jeong, SungRyul Lee, Jae Boum Youm, In Sung Song, Dae Yun Seo, Hye Jin Kim, Du Nam Won, Kyoung Im Cho, Mun Gi Choi, Byoung Doo Rhee, Kyung Soo Ko, Nari Kim, Jong Chul Won, Jin Han Article Affiliation: Tae Hee Ko Abstract: Metabolic disturbance and mitochondrial dysfunction are a hallmark of diabetic cardiomyopathy (DC). Resistance exercise (RE) not only enhances the condition of healthy individuals but could also improve the status of those with disease. However, the beneficial effects of RE in the prevention of DC and mitochondrial dysfunction are uncertain. Therefore, this study investigated whether RE attenuates DC by improving mitochondrial function using an in vivo rat model of diabetes. Fourteen Otsuka Long-Evans Tokushima Fatty rats were assigned to sedentary control (SC, n = 7) and RE (n = 7) groups at 28 weeks of age. Long-Evans Tokushima Otsuka rats were used as the non-diabetic control. The RE rats were trained by 20 repetitions of climbing a ladder 5 days per week. RE rats exhibited higher glucose uptake and lower lipid profiles, indicating changes in energy metabolism. RE rats significantly increased the ejection fraction and fractional shortening compared with the SC rats. Isolated mitochondria in RE rats showed increase in mitochondrial numbers, which were accompanied by higher expression of mitochondrial biogenesis proteins such as proliferator-activated receptor-γ coactivator-1α and TFAM. Moreover, RE rats reduced proton leakage and reactive oxygen species production, with higher membrane potential. These results were accompanied by higher superoxide dismutase 2 and lower uncoupling protein 2 (UCP2) and UCP3 levels in RE rats. These datasuggest that RE is effective at ameliorating DC by improving mitochondrial function, which may contribute to the maintenance of diabetic cardiac contractility. Article Published Date : Oct 13, 2017

Resistance training alone reduces systolic and diastolic blood pressure in prehypertensive and hypertensive individuals: meta-analysis.

Abstract Title: Resistance training alone reduces systolic and diastolic blood pressure in prehypertensive and hypertensive individuals: meta-analysis. Abstract Source: Hypertens Res. 2017 Aug 3. Epub 2017 Aug 3. PMID: 28769100 Abstract Author(s): Evitom Corrêa de Sousa, Odilon Abrahin, Ana Lorena Lima Ferreira, Rejane Pequeno Rodrigues, Erik Artur Cortinhas Alves, Rodolfo Paula Vieira Article Affiliation: Evitom Corrêa de Sousa Abstract: The purpose of this study was to evaluate the effects of resistance training alone on the systolic and diastolic blood pressure in prehypertensive and hypertensive individuals. Our meta-analysis, followed the guidelines of PRISMA. The search for articles was realized by November 2016 using the following electronic databases: BIREME, PubMed, Cochrane Library, LILACS and SciELO and a search strategy that included the combination of titles of medical affairs and terms of free text to the key concepts: 'hypertension' 'hypertensive', 'prehypertensive', 'resistance training', 'strength training', and 'weight-lifting'. These terms were combined with a search strategy to identify randomized controlled trials (RCTs) and identified a total of 1608 articles: 644 articles BIREME, 53 SciELO, 722 PubMed, 122 Cochrane Library and 67 LILACS. Of these, five RCTs met the inclusion criteria and provided data on 201 individuals. The results showed significant reductions for systolic blood pressure (-8.2 mm Hg CI -10.9 to -5.5;I(2): 22.5% P valor for heterogeneity=0.271 and effect size=-0.97) and diastolic blood pressure (-4.1 mm Hg CI -6.3 to -1.9; I(2): 46.5% P valor for heterogeneity=0.113 and effect size=-0.60) when compared to group control. In conclusion, resistance training alone reduces systolic and diastolic blood pressure in prehypertensive and hypertensive subjects. The RCTs studies that investigated the effects of resistance training alone in prehypertensive and hypertensive patients support the recommendation of resistance training as a tool for management of systemic hypertension.Hypertension Research advance online publication, 3 August 2017; doi:10.1038/hr.2017.69. Article Published Date : Aug 02, 2017

Can resistance training impact MRI outcomes in relapsing-remitting multiple sclerosis?

Abstract Title: Can resistance training impact MRI outcomes in relapsing-remitting multiple sclerosis? Abstract Source: Mult Scler. 2017 Jul 1:1352458517722645. Epub 2017 Jul 1. PMID: 28752800 Abstract Author(s): Tue Kjølhede, Susanne Siemonsen, Damian Wenzel, Jan-Patrick Stellmann, Steffen Ringgaard, Bodil Ginnerup Pedersen, Egon Stenager, Thor Petersen, Kristian Vissing, Christoph Heesen, Ulrik Dalgas Article Affiliation: Tue Kjølhede Abstract: BACKGROUND: Multiple sclerosis (MS) is characterised by accelerated brain atrophy, which relates to disease progression. Previous research shows that progressive resistance training (PRT) can counteract brain atrophy in other populations. OBJECTIVE: To evaluate the effects of PRT by magnetic resonance imaging (MRI) and clinical measures of disease progression in people with MS. METHODS: This study was a 24-week randomised controlled cross-over trial, including a Training ( n = 18, 24 weeks of PRT followed by self-guided physical activity) and Waitlist group ( n = 17, 24 weeks of habitual lifestyle followed by PRT). Assessments included disability measures and MRI (lesion load, global brain volume, percentage brain volume change (PBVC) and cortical thickness). RESULTS: While the MS Functional Composite score improved, Expanded Disability Status Scale, lesion load and global brain volumes did not differ between groups. PBVC tended to differ between groups and higher absolute cortical thickness values were observed in 19 of 74 investigated cortical regions after PRT. Observed changes were confirmed and reproduced when comparing relative cortical thickness changes between groups for four areas: anterior cingulate gyrus, temporal pole, orbital sulcus and inferior temporal sulcus. CONCLUSION: PRT seem to induce an increase in cortical thickness, indicating that PRT have a neuroprotective or even neuroregenerative effect in relapsing-remitting MS. Article Published Date : Jun 30, 2017
Prev123Next

We use cookies on our website. Some of them are essential for the operation of the site, while others help us to improve this site and the user experience (tracking cookies). You can decide for yourself whether you want to allow cookies or not. Please note that if you reject them, you may not be able to use all the functionalities of the site.