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Acute physical exercise works as an activator of the responses of the human organism to stress. This is based on the activation of the hypothalamic–pituitary–adrenal (HPA) axis, affecting physical, physiological and psychological levels. This study aimed to analyse the effects of a single bout of high-intensity resistance exercise on cognitive-behavioural responses: visuo-spatial path learning and memory, as well as physiological responses (salivary cortisol levels). Nineteen healthy male military-trained powerlifting subjects were tested in a within-subject design on two experimental days with an interval of 48 h. The stress and cognitive variables were measured by cortisol levels and Ruff–Light trail-learning test (RULIT) test scores, respectively. The results showed the immediate influence of acute exercise on cortisol, with significantly higher cortisol levels found in subjects after completion of the acute resistance exercise. In addition, this study found a significant deterioration of memory and learning ability after a dose of intense resistance exercise. In conclusion, the study highlights the relative effects of resistance exercise on cortisol and cognitive performance depending on the intensity and type of the exercise, the moment of measurement and the cerebral areas implicated.

The aim of this study was to evaluate the acute effect of aerobic (AER) and eccentric (ECC) exercise on glucose variability, correlating it with circulating markers of inflammation and oxidative stress in healthy subjects. Sixteen healthy subjects (32 ± 12 years old) wore a continuous glucose monitoring system for three days. Participants randomly performed single AER and ECC exercise sessions. Glucose variability was evaluated by glucose variance (VAR), glucose coefficient of variation (CV%) and glucose standard deviation (SD). Blood samples were collected to evaluate inflammatory and oxidative stress markers. When compared with the pre-exercise period of 0-6 h, all the indices of glucose variability presented comparable reductions 12-18 h after both exercises (∆AER: VAR= 151.5, ∆CV% = 0.55 and ∆SD = 3.1 and ECC: ∆VAR = 221.2 , ∆CV% = 3.7 and ∆SD = 6.5). Increased interleukin-6 (IL-6) levels after AER (68.5%) and ECC (30.8%) (P<0.001) were observed, with no differences between sessions (P = 0.459). Uric acid levels were increased after exercise sessions (3% in AER and 4% in ECC, P = 0.001). In conclusion, both AER and ECC exercise sessions reduced glucose variability in healthy individuals. Inflammatory cytokines, such as IL-6, and stress oxidative markers might play a role in underlying mechanisms modulating the glucose variability responses to exercise (clinicalTrials.gov NCT02262208).

The analysis of body composition (fat, bone and muscle) is an important process throughout the biomedical sciences. This is the first book to offer a clear and detailed introduction to the key methods and techniques in body composition analysis and to explain the importance of body composition data in the context of sport, exercise and health. With contributions from some of the world's leading body composition specialists, the book goes further than any other in demonstrating the practical and applied value of body composition analysis in areas such as performance sport and weight control in clinical populations. The book pays particular attention to the important concept of change in body composition, and includes discussion of ethical issues in the collection, interpretation and presentation of data, and considerations when working with special populations. Bridging the gap between research methods and practical application, this book is important reading for advanced students and practitioners working in sport and exercise science, health science, anatomy, nutrition, physical therapy or ergonomics.

The National Cancer Policy Forum of the National Academies of Sciences, Engineering, and Medicine held a public workshop, Incorporating Weight Management and Physical Activity Throughout the Cancer Care Continuum, on February 13 and 14, 2017, in Washington, DC. The purpose of this workshop was to highlight the current evidence base, gaps in knowledge, and research needs on the associations among obesity, physical activity, weight management, and health outcomes for cancer survivors, as well as to examine the effectiveness of interventions for promoting physical activity and weight management among people living with or beyond cancer. Workshop sessions also reviewed the opportunities and challenges for providing weight management and physical activity interventions to cancer survivors. This publication summarizes the presentations and discussions from the workshop.

In order to effectively examine, test, and treat patients with exercise, physical therapists need to understand how physiology from the cellular to the systems level provides the basis for normal responses to exercise. But that is not enough.

This lively, inspiring, and informative book zeroes in on the state of American fitness-persistently sedentary, plagued by obesity-and issues a clarion call to action that reaches across economic, racial, and educational lines. Toni Yancey finds that despite our best intentions and repeated resolutions to exercise, as well as a 40-year investment in fitness education and counseling, physical activity in all levels of society continues to plummet. In a warm, reader-friendly narrative that draws on solid scientific research, personal experience, and her own poetry, Yancey calls for a radically different approach: one that respects diversity and is grounded in the cultures of those most at risk.Instant Recessproposes regular ten-minute exercise breaks that utilize music and dance and are easily incorporated into school, work, and community life. Rather than encouraging unhealthful habits like cigarette breaks or high fat snacks, these \"instant recesses\" make the active choice the natural one. Here is a new paradigm for fitness and public health that promises vitality, well being, and a greater sense of community-demonstrating, as Yancey argues, that what's good for the waistline is good for the bottom line.

High intensity functional training (HIFT) provides a potential option to meet public exercise recommendations for both cardiorespiratory and strength outcomes in a time efficient manner. To better understand the potential for HIFT as an exercise approach, energy expenditure (EE) and relative intensity need quantifying. In thirteen sedentary men and women with metabolic syndrome (MetS), we used both indirect calorimetry and blood lactate levels to calculate EE of a single session of HIFT. The HIFT session included four, 6-minute sets of consecutive functional exercises. Examples of the exercises involved were squats, deadlifts, suspension rows, suspension chest press, and planks. Intensity is described relative to individual ventilatory thresholds. The total group EE was 270.3 ± 77.3 kcal with approximately 5% attributed anaerobic energy production. VO2 ranged between 88.8 ± 12.3% and 99 ± 12% of the second ventilatory threshold (VT2), indicating a vigorous effort. After each work interval, peak blood lactate ranged between 7.9 ± 1.9 and 9.3 ± 2.9 mmol, and rate of perceived exertion between 6.9 ± 1.0 and 8.7 ± 0.8 arbitrary units from 1-10. These were achieved in approximately 46 minutes of exercise per participant. In conclusion, HIFT elicits the energy expenditure and effort requisite to result in the adaptive responses to produce the known suite of benefits of exercise for individuals with MetS.

IntroductionPhysical activity induces rapid and selective leukocyte mobilization. Among the most responsive cell types to high-intensity exercise are CD8+ T cells, key effectors of immune defense against infected cells and cancer. However, comprehensive profiling of acute high-intensity interval training (HIIT)-induced modulation of the CD8+ T cell compartment remains lacking.MethodsWe assessed the effects of a supervised, group-based HIIT session on the CD8+ T cell compartment in 23 healthy participants. Blood was collected at baseline, immediately post-exercise (ex02), and one hour post-exercise (ex60). CD8+ T cells were analyzed for virus peptide reactivity using DNA-barcoded peptide-MHC multimer staining targeting 250 peptides. Differentiation status, chemokine receptor expression, and ligand regulation were assessed by flow cytometry and Olink proteomics, and finally, associations between individual characteristics and CD8+ T cell mobilization were analyzed.ResultsA single HIIT bout induced robust CD8+ T cell mobilization followed by substantial egress, which were consistent across fitness levels, body composition and age. Circulating virus-reactive T cells significantly increased in peripheral blood in response to exercise across virus types, including EBV-, SARS-CoV-2- and CMV-specific T cells. HIIT modulated chemokine receptor profiles, and memory subsets were reorganized, reducing terminally differentiated and CD57+, PD-1+, and CD28neg cells at ex60 post-exercise. Notably, catecholamines NE and EPI peaked post-exercise, and NE was selectively associated with CD8+ T cell mobilization.DiscussionIn conclusion, acute HIIT mobilizes functional, virus-reactive CD8+ T cells with features indicative of enhanced migratory and activation potential, supporting translational use from tumor immunology to infectious disease. The study is registered at clinicaltrials.gov (NCT05826496).

Numerous studies have demonstrated that executive functions benefit from high-intensity interval training (HIIT) and moderate-intensity continuous training (MICT). However, the immediate effects of HIIT and MICT on these functions in older adults have not been compared. This study aimed to examine the acute impact of HIIT and MICT on executive function components in this demographic. Twenty-five healthy community-dwelling older adults (15 females; average age 67.1 ± 4.5 years) participated. The study involved three sessions: an initial session with cognitive assessments (Stroop Task: Naming, Inhibition, and Switching) and a maximal continuous graded exercise test, followed by two sessions involving HIIT (15s at 100% peak power output, 15s rest, 2 × 20 min) or MICT (34 min at 60% peak power output) training protocols in random order. Cognitive tests were administered immediately after and 45 min post-training. The results showed a significant difference in Switching reaction times between MICT and HIIT, with HIIT showing a greater reduction in Switching times after 45 min ( p  = 0.019). In conclusion, our study indicates that HIIT’s beneficial effects on executive functions demonstrated a larger effect size than those of MICT. This suggests that brief, high-intensity exercise could be more effective in enhancing executive functions among older adults.

The present inspiration catalogue is compiled as a follow-up to the Nordic Plan of Action on Better Health and Quality of Life Through Food and Physical Activity. The catalogue is the first of a series planned for release every other year. The catalogue deals with initiatives for children and young people with a focus on Best Practice. The joint Nordic Plan of Action sets a number of objectives for what we in the Nordic region shall achieve in the fields of diet and physical activity before 2001, in addition to visions for status in 2021. These goals and visions are described in the catalogue. The overall goals are all about getting more people to eat healthily and to increase the physical activity level of the general population. As a background for the initiatives, the catalogue contains a short description of the individual countries' legislation and action plans in the areas of healthy food and physical activity. For each Nordic country, initiatives are described that have the purpose of promoting children's and/or young people's health through diet and physical activity. At the same time, 2-3 initiatives are pointed out as Best Practices for the individual countries, which are marked in the catalogue under separate sections. These Best Practices are deemed by the countries as being projects that have or have had particularly good effects on dietary habits and/or physical activity levels. The Nordic countries are well on the way with good projects and we can learn much from each other. Thus, the catalogue is expected to be followed-up later with Best Practices on other themes, such as common monitoring methods for development within the fields of healthy food and physical activity.