Exercise Training Research Articles

Exercise training may reduce fragmented mitochondria in the ischemic-reperfused heart through DRP1

Mitochondrial fission is a key trigger of cardiac ischemia-reperfusion injuries (IR). Exercise training is an efficient cardioprotective strategy, but its impact on mitochondrial fragmentation during IR remains unknown. Using isolated rat hearts, we found that exercise training limited the activation of dynamin-like protein 1 and limited mitochondrial fragmentation during IR. These results support the hypothesis that exercise training contributes to cardioprotection through its capacity to modulate the mitochondrial fragmentation during IR.

EFFECT OF EXERCISE ON BURST FREQUENCY A MARKER OF SYMPATHETIC ACTIVITY IN HYPERTENSIVE INDIVIDUALS: A SYSTEMATIC REVIEW.

Background: Burst frequency is a factor that is used to know the relationship between sympathetic activity and blood pressure in individuals with hypertension. Various forms of exercise reduce the burst frequency among individuals with hypertension. This systematic review provides suggestion of exercise prescription for reducing blood pressure. Objective: To determine the effects of exercise training and its regulatory mechanisms on burst frequency (BF) a marker of muscle sympathetic nerve activity (MSNA) in hypertensive individuals. Methods: A systematic literature search of electronic databases such as PubMed, Web of Science and Scopus was conducted from inception to July 2024 included randomized controlled trials (RCTs), non-randomized experimental studies (non-RCTs) or pre-post experimental trials on hypertensive patients without associated metabolic disorders, with or without pharmacological treatment, aged between 18 and 70 years, both genders. Patients underwent at least 4 weeks of aerobic, resistance, or breathing exercises with BF as an outcome measure were included. The Revised Cochrane Risk of Bias tool (RoB 2) and Risk of Bias in Non-randomized Studies of Interventions tool (ROBINS-I) was used to evaluate the risk of bias. Results: Five trials were included. Four studies demonstrated a significant reduction in BF among exercise-trained hypertensive individuals, while one study reported no change in BF. Overall, two studies had "some concerns" about performance and attrition bias, one had "high RoB" for selection bias, one had “moderate RoB” due to expected confounding, and one had “serious RoB” due to uncontrolled confounding factors. Conclusion: These findings suggests that HIIT significantly reduces BF, while aerobic and breathing exercises offers lesser benefits, further research should focus on training dosages. Implications: It provides evidence to utilize tailored exercise programme that may reduce sympathetic overactivity in hypertensive patients for better blood pressure control and reduce cardiovascular risk.

Exercise in Pediatric COVID-19: A Randomized Controlled Trial.

Purpose: This study assessed the impact of a 12-week, home-based exercise training (HBET) program on health-related quality of life (HRQOL, primary outcome), cardiovascular and metabolic parameters in pediatric COVID-19 patients.Methods: In this single-center, randomized controlled trial conducted in Sao Paulo (Brazil) from October 2020 to January 2022, 32 patients (mean age 12 ± 3.3 years; median 4 months [range: 0.7-6.6] between COVID-19 diagnosis [n = 25 mild, n = 4 moderate, n = 3 severe illness] and study entry) from a tertiary hospital were randomly assigned to either HBET or standard of care (CONTROL) in a 2:1 ratio. The HBET group underwent supervised and unsupervised sessions 3 times/week for 12 weeks emphasizing aerobic and bodyweight exercises and the CONTROL group received standard care which included general advice for a healthy lifestyle with no prescribed exercise intervention. HRQOL (Pediatric Quality of Life Inventory [PedsQL], cardiopulmonary exercise test (CPET), brachial flow-mediated dilation (b-FMD) and echocardiography assessments were conducted in both groups. Statistical analysis was performed using an intention-to-treat approach (ITT) for the primary analysis and complete-case (per-protocol) as sensitivity analysis and significance was set at P ≤ 0.05 (P ≤ 0.10 were considered as trend).Results: There was no difference in HRQOL between groups. Intention-to-treat analysis showed a trend toward increased VO2 at anaerobic threshold at post-intervention for the HBET group. Additionally, a sensitivity analysis showed significant changes in peak HR, HRR1min, RER and chronotropic response and tendency towards significance in VE/MVV and chronotropic response for the HBET group. No other between-group differences were detected for CPET, b-FMD and echocardiography variables (all p > 0.05).Conclusions: In this RCT, a 12-week HBET intervention did not impact HRQOL in pediatric COVID-19 patients. However, HBET led to greater improvements in VO2 VAT, heart rate peak and one-minute recovery and in chronotropic response with no changes in other cardiovascular parameters. Further studies are needed to explore the effects of exercise on the recovery of pediatric COVID-19 patients with persistent COVID-19 symptoms.

Exercise training to preserve vitality capacity in ageing.

Ageing is an escalating global health issue, with the World Health Organization (WHO) reporting that one in six individuals will be 60years or older by the year 2030. Therefore, understanding the mechanisms of complex biological ageing processes and associated healthcare challenges has become increasingly important. Intrinsic capacity (IC), defined by WHO as the composite of all physical and mental capacities an individual possesses, can be used as a proxy for defining healthy ageing. IC has five key components: locomotion, cognition, psychological, sensory, and vitality capacity (VC). This review paper specifically focuses on exercise as an effective tool to preserve VC in ageing populations. The physiological domains of VC discussed include energy and metabolism, neuromuscular function, immune and stress response, mitochondrial function, and the methylation clock. Additionally, we highlight potential outcome measures for assessing each of these domains. This review also covers areas of focus for future research and possible interventions. We ultimately conclude that ageing is a complex, multifaceted process resulting in deficits across multiple VC components. However, regular exercise is capable of producing physiological adaptations that may be beneficial in the context of healthy ageing and improving or preserving the status of VC components.

Collaborative and interdisciplinary teaching in sport and exercise: Lessons from the development and delivery of an equity, diversity, and inclusion workshop

Training in sport and exercise that is collaborative and interdisciplinary allows for the delivery of key knowledge and skills that help shape trainees’ practice. Such training also demonstrates how collaborations can take shape and how individuals can work together in the future. We present an example of collaborative and interdisciplinary training used within an equity, diversity, and inclusion workshop that was provided to trainees enrolled on the Sport and Exercise Psychology Accreditation Route (SEPAR) training program offered through the British Association of Sport and Exercise Sciences. The SEPAR program was designed to allow trainees to gain knowledge, skills, and experience to apply and register as Practitioner Psychologists with the Health and Care Professions Council in the United Kingdom. The workshop was a collaboration between individuals trained in sport and exercise psychology and clinical social work. Overall, the workshop helped trainees gain an understanding of key terms and definitions concerning equity, equality, diversity, inclusion, and social justice as well as legal responsibilities. The workshop also demonstrated a variety of perspectives from sport and exercise psychology and clinical social work as to how inclusive and socially just approaches can be used to create safe environments that can foster strong therapeutic relationships with clients.

Maximal exercise capacity, peripheral muscle strength, sleep quality, and quality of life in adult patients with stable asthma

ABSTRACT Objective The prevalence of asthma is increasing gradually worldwide. The pathophysiological process of asthma causes some alterations in the respiratory system and decreases oxygen-carbon dioxide exchange and respiration volume. These alterations may affect maximal exercise capacity, peripheral muscle strength, sleep quality, and disease-specific quality of life but have yet to be comprehensively investigated. To compare maximal exercise capacity, pulmonary function, peripheral muscle strength, dyspnea, sleep quality, and quality of life in adult patients with asthma, healthy controls were aimed. Methods Forty-one adult stable asthmatic patients (GINA I-III) and 41 healthy subjects were compared. Exercise capacity (cardiopulmonary exercise test [CPET]), pulmonary function (spirometry), peripheral muscle strength (dynamometer), dyspnea (modified Medical Research Council [mMRC] dyspnea scale), quality of life (Asthma Quality of Life Questionnaire [AQLQ]) and sleep quality (Pittsburgh Sleep Quality Index [PSQI]) were evaluated. Results Peak VO2, VO2kg, MET, VE, HR, %VE, %HR, VCO2 parameters of CPET, FVC, FEV1, FEF25-75%, and FEV1/FVC and quadriceps femoris, shoulder abductors, and hand grip muscles strength were significantly decreased in patients with asthma (p < 0.05). MMRC dyspnea scale score was increased, and AQLQ and PSQI scores decreased in asthma patients (p < 0.05). Conclusions Cardiac and pulmonary system responses to peak exercise worsened, and maximal exercise capacity and peripheral muscle strength decreased in adult patients with stable asthma. In addition, dyspnea during daily activities increases, and quality of life and sleep quality are impaired. A variety of exercise training that would benefit asthmatic patients' outcomes should be investigated.

Ventricular arrhythmias in association with athletic cardiac remodelling.

Athletes are predisposed to atrial arrhythmias but the association between intense endurance exercise training, ventricular arrhythmias (VAs) and sudden cardiac death is less well established. Thus, it is unclear whether the 'athlete's heart' promotes specific arrhythmias or whether it represents a more general pro-arrhythmogenic phenotype. Whilst direct causality has not been established, it appears possible that repeated exposure to high-intensity endurance exercise in some athletes contributes to formation of pro-arrhythmic cardiac phenotypes that underlie VAs. Theories regarding potential mechanisms for exercise-induced VAs include repeated bouts of myocardial inflammation and stretch-induced cellular remodelling. Small animal models provide some insights, but larger animal and human data are sparse. The current clinical approach to VAs in athletes is to differentiate those with and without structural or electrical heart disease. However, if the athlete's heart involves a degree of pro-arrhythmogenic remodelling, then this may not be such a simple dichotomy. Questions are posed by athletes with VAs in combination with extreme remodelling. Some markers, such as scar on magnetic resonance imaging, may point toward a less benign phenotype but are also quite common in ostensibly healthy athletes. Other clinical and invasive electrophysiology features may be helpful in identifying the at-risk athlete. This review seeks to discuss the association between athletic training and VAs. We will discuss the potential mechanisms, clinical significance and approach to the management of athletes with VAs.

Flywheel resistance training promotes unique muscle architectural and performance-related adaptations in young adults.

The purpose of this study was to examine the skeletal muscle hypertrophic, architectural, and performance-related adaptations in response to volume-matched, total-body flywheel versus traditional resistance training in a randomized, non-exercise controlled study in physically active young adults. Thirty-one healthy young adults (24±3y) were randomized to 10weeks of traditional resistance training (TRT; n=7F/5M), flywheel training (FWRT; n=7F/4M), or a habitual activity control (CON; n=5F/3M). Maximal voluntary isometric torque (MVIT), one repetition-maximum (1RM) for the free weight squat and bench press, three repetition work maximum (3Wmax) for the flywheel squat and bench press, countermovement jump height, and broad jump distance, as well as site-specific muscle hypertrophy, fascicle length (FL), and pennation angle, were measured. Both TRT and FWRT increased MVIT (p≤0.021) and FFM (p≤0.032) compared to CON. However, TRT promoted superior improvements in free weight squat and bench 1RM (p<0.001), and FWRT improved flywheel 3Wmax squat and bench (p<0.001). FWRT increased the FL and cross-sectional area of the distal VL, countermovement jump height, and broad jump distance (p≤0.048), whereas TRT increased the pennation angle and cross-sectional area of the proximal VL. Therefore, 10weeks of volume-matched, total-body traditional, and flywheel resistance training similarly increased maximal isometric strength and fat-free mass. However, FWRT promoted unique skeletal muscle architectural adaptations that likely contributed to region-specific VL hypertrophy and jump performance improvements. Thus, FWRT provides a novel training stimulus that promotes architectural adaptations that support improved athletic performance in a manner that is not provided by traditional resistance exercise training.

Cardiac Rehabilitation for Fontan Circulation Patients: A Systematic Review, and Meta-Analysis

Background and Objectives: Despite advances in the surgical management of patients with Fontan circulation, their exercise capacity and quality of life remain significantly impaired. Exercise-based cardiac rehabilitation (CR) offers promising improvements in these areas, but the implementation and adherence to these programmes are often inconsistent. This systematic review and meta-analysis aimed to evaluate the safety, efficacy, and optimal exercise modalities for Fontan patients. Materials and Methods: A systematic search of PubMed, Scopus, Web of Science, and Cochrane Library was conducted on 24 August 2023. Studies were screened and assessed for quality using the Cochrane RoB Tool 2 and STROBE checklist. Meta-analysis was performed using a continuous random-effects model to determine the effectiveness of various CR interventions, including aerobic exercise training (AET), resistance training, and inspiratory muscle training (IMT). Results: A total of 26 studies (7 RCTs, 19 cohorts) comprising 22 distinct cohorts were included, with a total sample size of 428 Fontan patients. The interventions ranged from 4 weeks to 24 months and included AET (18 studies), resistance training (11 studies), and IMT (6 studies). The meta-analysis revealed significant improvements in exercise capacity, with a pooled mean difference in peak VO2 of 1.947 (95% CI: 1.491 to 2.402, p &lt; 0.001). Subgroup analyses showed that combined AET and resistance training had the most robust effect, with a mean difference of 2.11 (95% CI: 1.57 to 2.65, p &lt; 0.001). Home-based interventions showed significant benefits, while supervised and hybrid interventions did not show statistically significant differences. Publication bias was identified, particularly in home-based interventions, where smaller studies demonstrated larger effect sizes, as confirmed by Egger’s test (Intercept = 2.417, 95% CI: 1.498 to 3.337, p = 0.001). However, no significant bias was detected in supervised or hybrid interventions, which displayed symmetrical distributions in funnel plots and non-significant Egger’s test results. Conclusions: CR appears to be an effective intervention for improving exercise capacity in Fontan patients, particularly when combining AET with resistance training. Home-based programmes offer promising results, though the potential for publication bias, especially in smaller studies, warrants cautious interpretation of these findings. Further research is needed to refine protocols, explore long-term outcomes, and determine the underlying mechanisms, particularly for patients with more severe clinical presentations. The low incidence of adverse events across the studies reinforces the safety of these interventions.

Effects of home-based exercise alone or combined with cognitive training on cognition in community-dwelling older adults: A randomized clinical trial

BackgroundStructured and supervised physical exercise and cognitive training are two efficient ways to enhance cognition in older adults. Performing both within a combined intervention could maximize their effect on cognition due to their potential synergy on brain functions. During the COVID-19 pandemic, these interventions were particularly relevant due to the collateral impact of social restrictions regarding physical activity and the level of cognitive stimulation. However, the benefits of remotely monitored intervention combining physical exercise and cognitive training for older adult cognition remain to be demonstrated. Methods127 older adults (age: 65.20 ± 7.95) were randomized in two arms, encouraging self-engagement in six months of home-based physical exercise alone or combined with cognitive training, monitored by phone once a week. Neuropsychological assessment was performed under videoconference supervision at baseline and after three and six months. Composite Z-scores were calculated for processing speed, executive functioning, working, and episodic memory to assess changes after three and six months of training. The weekly metabolic expenditure of self-reported activities was estimated using the compendium of physical activity to distinguish participants performing higher and lower doses of exercise (median split). Results106 participants (83.46 %) completed the 6-month training. Results showed a greater Z-score change in executive functioning for participants in the combined arm than those who only exercised (F = 4.127, p = 0.046, ηp2 = 0.050). Group x Exercise dose interaction was observed for episodic memory Z-score change (F = 6.736, p = 0.011, ηp2 = 0.070), with a greater improvement for participants performing higher doses of exercise compared to those who performed a lower dose, only in exercise alone arm. Performing a higher dose of exercise increased the working memory Z-score change in both intervention arms compared to a lower dose (F = 7.391, p = 0.008, η p2 = 0.076). ConclusionRemote combined training may lead to larger improvement in executive functioning than exercise alone. Physical exercise showed a dose-related improvement in working and episodic memory performances. The combination of cognitive interventions mitigated the effects of exercise on episodic memory. These results suggest that home-based exercise and cognitive training may help improve older adults' cognition. Trial registrationCOVEPIC was retrospectively registered on December 03, 2020. Clinical trials Identifier: NCT04635462 - https://clinicaltrials.gov/ct2/show/record/NCT04635462?term=NCT04635462&draw=2&rank=1

Construction and application of the emergency resilience capability evaluation scale and model for grassroots medical workers: a cross-sectional study in Guangzhou, China

ObjectivePublic health emergencies pose a serious challenge to the ability of medical personnel to respond. We aimed to establish a scientific and effective resilience capability assessment scale for grassroots medical workers and explore the way to improve resilience.Research designDeveloped a resilience ability assessment scale and applied it on the medical personnel who worked in community health service centers for more than 1 year. Related indicators were identified through literature review and the Delphi method. The established scale was given weight using the attribute analytic hierarchy process, and the evaluation model was built through the grey correlation analysis.Principal findingsA three-level indicator scale was established, which included three first-level indicators [professional quality (weight 0.346), psychological capital (weight 0.614), and emergency attitude (weight 0.040)]. The second-level indicators had 13 contents and were further subdivided into 46 three-level indicators. The overall resilience ability assessment score of 347 medical workers in Guangzhou was only 0.787. However, steady scientific-exercise habits and relative training can help improve their public health emergency resilience ability (p &amp;lt; 0.05).ConclusionThe establishment of the scale can provide a strategic basis for improving the resilience strength of grass-roots medical personnel. We should encourage this group to form a good habit of exercise, strengthen their crisis awareness by actively organizing theoretical training and practical exercises on public health emergencies, and improve their psychological capital level.Patient or public contributionIn this study, 347 medical workers from 6 basic medical institutions in Guangzhou participated in the questionnaire.

Preventing Allogeneic Stem Cell Transplant-Related Cardiovascular Dysfunction: ALLO-Active Trial.

Allogeneic stem cell transplantation (allo-SCT) is an efficacious treatment for hematologic malignancies but can be complicated by cardiac dysfunction and exercise intolerance impacting quality of life and longevity. We conducted a randomized controlled trial testing whether a multicomponent activity intervention could attenuate reductions in cardiorespiratory fitness and exercise cardiac function (co-primary end points) in adults undergoing allo-SCT. Sixty-two adults scheduled for allo-SCT were randomized to a 4-month activity program (n=30) or usual care (UC; n=32). Activity comprised multicomponent exercise training (3 days/week) and sedentary time reduction (≥30 min/day) program and was delivered throughout hospitalization (≈4 weeks) and for 12 weeks after discharge. Physiological assessments conducted before admission and at 12 weeks after discharge included cardiopulmonary exercise testing to quantify peak oxygen uptake ([Formula: see text]), exercise cardiac magnetic resonance imaging for peak cardiac volume (CIpeak) and stroke volume (SVIpeak) index, echocardiography-derived left ventricular ejection fraction and global longitudinal strain, and cardiac biomarkers (cTn-I [troponin-I] and BNP [B-type natriuretic peptide]). Fifty-two participants (84%) completed follow-up (25 activity and 27 UC); median (interquartile range [IQR]) adherence to the activity program was 74% (41-96%). There was a marked decline in [Formula: see text] in the UC program (-3.4 mL‧kg-1‧min-1 [95% CI, -4.9 to -1.8]) that was attenuated with activity (-0.9 mL‧kg-1‧min-1 [95% CI, -2.5 to 0.8]; interaction P=0.029). Activity preserved exercise cardiac function, with preservation of CIpeak (0.30 L‧min-1‧m-2 [95% CI, -0.34 to 0.41]) and SVIpeak (0.6 mL/m2 [95% CI, -1.3 to 2.5]), both of which declined with UC (CIpeak, -0.68 L‧min-1‧m-2 [95% CI, -1.3 to -0.32]; interaction P=0.008; SVIpeak, -2.7 mL/m2 [95% CI, -4.6 to -0.9]; interaction P=0.014). There were no treatment effects of activity on cardiac biomarkers or echocardiographic indices. Multicomponent activity intervention during and after allo-SCT is beneficial for preserving patient cardiorespiratory fitness and exercise cardiac function. These results may have important implications for cardiovascular morbidity and mortality after allo-SCT. URL: https://anzctr.org.au/; Unique identifier: ACTRN12619000741189.

Knowledge of pelvic floor muscles in community-dwelling women aged over 60: its relationship with urinary incontinence.

To investigate the awareness of the pelvic floor muscles (PFMs) and PFM exercises (PFME) knowledge, training and experience in community-dwelling women aged 60 and over and its relationship with urinary incontinence (UI). This is a questionnaire based study which was carried out in 9 Physical Medicine and Rehabilitation Centers, including a total of 500 women aged 60 and over and living in the community. The questionnaire included questions about awareness of PFMs, UI complaints and PFME knowledge, training and experience. Knowledge and awareness of PFMs and PFME knowledge, training and experience were compared in subgroups with or without urinary incontinence. The mean age of the women included in the study was 67.8 ± 6.1 (60-88). Knowledge and awareness of PFMs and PFME knowledge, training and experience were low in the study population. Knowledge and awareness of PFMs were significantly low in the subgroup with urinary incontinence (p < 0.05). Kegel exercise training and experience were significantly low in the subgroup without urinary incontinence (p = 0.01, p < 0.01). Knowledge and awareness of PFMs and PFME knowledge, training and experience are low in community-dwelling women aged 60 and over and training programs should be organized to teach the function of the PFMs and to perform PFME correctly in this population.

Heart Rate Variability in Basketball: The Golden Nugget of Holistic Adaptation?

The main aim of this narrative review is to assess the existing body of scientific literature on heart rate variability (HRV) in relation to basketball, focusing on its use as a measure of internal load and vagal nerve responses. Monitoring HRV offers insights into the autonomic function and training-induced adaptations of basketball players. Various HRV measurement protocols, ranging from short-term to longer durations, can be conducted in different positions and conditions, such as rest, training, and sleep, to determine this key metric. Consistency and individualization in measurement protocols, responding to the athlete’s specific characteristics, is crucial for reliable HRV data and their interpretation. Studies on HRV in basketball have explored psychological adaptation, training effects, individual differences, recovery, and sleep quality. Biofeedback techniques show positive effects on HRV and anxiety reduction, potentially enhancing performance and stress management. The scientific literature on HRV in basketball could benefit from studies involving longer monitoring periods to identify significant trends and results related to training and recovery. Longitudinal HRV monitoring in teams with intense travel schedules could reveal the impact on athletes of all levels and ages, and, in this regard, individualized interpretation, considering the subjective recovery and fitness levels of athletes, is recommended to optimize training programs and performance. HRV provides insights into training and competitive loads, aiding in determining exercise intensities and training status. Additionally, HRV is linked to recovery and sleep quality, offering valuable information for optimizing player performance and well-being. Overall, HRV is a reliable tool for adjusting training programs to meet the specific needs of basketball players.

Intensity or Duration: That Is the Main Question of the Exercise Training Management in Stroke-Induced Neurological Deficit - A Systematic and Meta-analysis Study

Background: The neurological assessment plays a crucial role in evaluating stroke patients and is a skill that has been practiced by physicians for a long time, and further refined by practitioners. The purpose of the current study was to systematically review and synthesize the evidence-based neurological assessment of the different methods of treadmill-related training protocols in stroke patients. Evidence Acquisition: In this study, the appropriate studies were documented (N = 1270) using PubMed as the sole electronic database. Moreover, subgroup studies were provided based on training intensity and duration, categorized as low intensity-low duration, low intensity-high duration, high intensity-low duration, and high intensity-high duration. Training intensities were standardized to meters per second (m/s), and the training duration was calculated in terms of minutes per session, the number of sessions per week, and the total number of training weeks, which were then converted into minutes. The assessment of neurological recovery following stroke was conducted using standard neurological assessment scales. Results: This meta-analysis in humans found a notably positive standardized mean difference in protocols with high intensity and high duration (1.792; 95% CI = 0.566 to 3.02). Conclusions: In conclusion, the current meta-analysis suggests that practitioners using the high intensity-high duration protocol should regularly monitor the neurological outcomes, as they may be negatively impacted by the intensity and duration of the protocol.

Exercise training attenuates cardiac dysfunction induced by excessive sympathetic activation through an AMPK-KLF4-FMO2 axis

Cardiovascular diseases (CVDs) are a leading cause of mortality worldwide and are associated with an overactivated sympathetic system. Although exercise training has shown promise in mitigating sympathetic stress-induced cardiac remodeling, the precise mechanisms remain elusive. Here, we demonstrate that exercise significantly upregulates cardiac flavin-containing monooxygenase 2 (FMO2) expression. Notably, we find that exercise training effectively counteracts sympathetic overactivation-induced cardiac dysfunction and fibrosis by enhancing FMO2 expression via adenosine 5′-monophosphate (AMP)-activated protein kinase (AMPK) activation. Functional investigations employing FMO2 knockdown with adeno-associated virus 9 (AAV9) underscore the necessity for FMO2 expression to protect the heart during exercise in vivo. Furthermore, we identify the krüppel-like factor 4 (KLF4) as a transcriptional mediator of FMO2 that is crucial for the mechanism through which AMPK activation protects against sympathetic overactivation-induced cardiac dysfunction and fibrosis. Taken together, our study reveals a cardioprotective mechanism for exercise training through an AMPK-KLF4-FMO2 signaling pathway that underscores how exercise alleviates cardiac dysfunction induced by excessive sympathetic activation.

Cerebral blood flow and arterial transit time responses to exercise training in older adults

Brain vascular health worsens with age, as is made evident by resting grey matter cerebral blood flow (CBFGM) reductions and lengthening arterial transit time (ATTGM). Exercise training can improve aspects of brain health in older adults, yet its effects on CBFGM and ATTGM remain unclear. This randomised controlled trial assessed responses of CBFGM and ATTGM to a 26 week exercise intervention in 65 healthy older adults (control: n = 33, exercise: n = 32, aged 60–81 years), including whether changes in CBFGM or ATTGM were associated with cognitive function changes. Multiple-delay pseudo-continuous arterial spin labelling data were used to estimate resting global and regional CBFGM and ATTGM. Results showed no between-group differences in CBFGM or ATTGM following the intervention. However, exercise participants with the greatest cardiorespiratory gains (n = 17; ∆V̇O2peak >2 mL/kg/min) experienced global CBFGM reductions (-4.0 [-7.3, -0.8] mL/100 g/min). Cognitive functions did not change in either group and changes were not associated with changes in CBFGM or ATTGM. Our findings indicate that exercise training in older adults may induce global CBFGM reductions when high cardiorespiratory fitness gains are induced, but this does not appear to affect cognitive functions.

Effects of variation in exercise training load on cognitive performances and neurotrophic biomarkers in patients with coronary artery disease.

This study compared the effects of linear (LP) and nonlinear (NLP) training periodization on cognitive functions, neurotrophic biomarkers [plasma brain-derived neurotrophic factor (BDNF), insulin-like growth factor-1 (IGF-1)], and cathepsin-B in patients with coronary artery disease (CAD). Forty-four patients with CAD reported to our laboratory on two occasions to undergo testing procedures before and after training sessions, and were then blindly randomized to NLP or LP for 36 training sessions. Visit 1 included blood samples and a maximal cardiopulmonary exercise testing to get maximal oxygen uptake (V̇o2peak). Visit 2 included cognitive functions assessment. Thirty-nine patients completed the study (LP: n = 20, NLP: n = 19), with no observed changes in cognitive performances after the training intervention in either group. IGF-1 concentration decreased in both groups (time-effect: P < 0.001), whereas BDNF concentration increased (time-effect: P < 0.05) without group interaction, and cathepsin-B did not change after the intervention. Associations were found between ΔV̇o2peak and ΔBDNF (R2 = 0.18, P = 0.04), and ΔIGF-1 and Δshort-term/working memory (R2 = 0.17, P = 0.01) in the pooled sample, with ΔIGF-1 and ΔBDNF accounting for 10% of the variance in Δshort-term/working memory. In the LP group, associations were found between ΔV̇o2peak and ΔBDNF (R2 = 0.45, P = 0.02), ΔBDNF and Δshort-term/working memory (R2 = 0.62, P = 0.004), ΔIGF-1 and Δshort-term/working memory (R2 = 0.31, P = 0.01), and ΔIGF-1 and Δexecutive function (R2 = 0.22, P = 0.04). This study indicates that linear and nonlinear training periodization led to an increase in BDNF, and a decrease in IGF-1, without change in cognitive function in individuals with stable CAD.NEW & NOTEWORTHY We used a novel and supervised iso-energetic training, integrating both moderate- and high-intensity aerobic exercises. Our findings indicate that greater variation in training load did not yield cognitive enhancements, although both protocols exhibited positive effects on brain-derived neurotrophic factor (BDNF) levels. Moreover, this study establishes a clear positive association between short-term and working memory and neurotrophic biomarkers. In addition, the independent predictive value of change in insulin-like growth factor-1 (IGF-1) on improvement in short-term and working memory highlight the close relationship between neurotrophic markers and cognition. Consequently, our results advocate for exercise training interventions targeting neurotrophic biomarkers to enhance cognitive function among individuals with coronary artery disease.

Importance of health-related quality of gain with exercise training in preserved ejection fraction heart failure.

Importance of health-related quality of gain with exercise training in preserved ejection fraction heart failure.

Comparison of Muscle Activation During Quadrupedal Movement Training and Traditional Bodyweight Exercises

Comparison of Muscle Activation During Quadrupedal Movement Training and Traditional Bodyweight Exercises