ECSS Paris 2023: CP-MH21
INTRODUCTION: High temperature environment has impact of physical performance output, physical health (Ou, et al., 2023). Body adaptation training to a high temperature outside environment promotes the activity of thermoregulatory processes and reduces health disorders caused by heat depending on age, promotes the activity of thermoregulatory processes. and reduces health disorders caused by heat (Ashworth, et al., (2020). Understanding the effects of high temperature environments, identifying of preventive program of measures protocols and actions are essential for minimize adverse effects. The aim identifying of overheating risk in military environment and propose preventive measures program for minimizing adverse effects on physical health and fitness and optimize performance outcomes METHODS: Structural questionnaire provided in the two groups of respondents-military personnel (77 persons soldiers & 31 leaders) in aged 21-30 years, who’s professional activity with specific equipment connected to the risk of overheating and propose preventive program with four modules that reduce negative effect of high temperature during professional activities in hot environment RESULTS: Majority of respondents in both groups (above 70%) indicated that the highest risk of overheating exists when professional activities were provided in environment above 25°C. High environmental temperature affected as physical performance that supported by 63-77% respondents as well morale (49-60%). Respondents of both groups (63% leaders and 86% soldiers) agreed that professional equipment in hot environment aggravated performance outcome and it is essential to use innovative materials and components. Preventive thermo-adaptation 8-days implementation program supported by 51-63% of respondents; refreshing of knowledge and skills in hot environment agreed 72% respondents; negative effects on performance outcomes reduces by logistic and management of professional activities in hot environment CONCLUSION: Preventive program for diminishing negative effects of hot temperature includes four modules: 8-days acclimatization program implementation; uniform modernization with innovative materials; logistic support by using advanced individual water supply; personnel training in heat stress management
Read CV Liana PlavinaECSS Paris 2023: CP-MH21
INTRODUCTION: Physical fitness is a key determinant of military operational readiness and is traditionally developed through Traditional Military Physical Training (TMPT). However, this model, primarily based on conventional calisthenics and continuous running, may present limitations regarding time efficiency and the simultaneous development of operational physical capacities. High-Intensity Functional Training (HIFT) has been proposed as an efficient strategy to promote neuromuscular and cardiorespiratory adaptations, considering the relationship between training intensity and time economy. Nevertheless, controlled studies comparing these training models in Brazilian Air Force military personnel remain scarce. METHODS: This randomized experimental study lasted 12 weeks and included 24 male Brazilian Air Force Police military personnel, allocated into two groups: Traditional Military Physical Training (Control Group – CG) and TMPT combined with HIFT (HIFT Group – HG). Both groups performed five weekly training sessions. The CG followed the standard military training program, consisting of continuous and interval running, localized gymnastics, sports activities, and free training, with an estimated average weekly volume of 205 minutes during weeks 1–6 and 270 minutes during weeks7–12. The HG followed the same program, with the addition of two weekly HIFT sessions, separated by a minimum of 48 hours. HIFT sessions consisted of circuit-based calisthenic exercises (pull-ups, push-ups, rowing sit-ups, and jump squats), progressively structured in terms of repetitions, rounds, and rest intervals. The HG’s estimated average weekly training volume was 144 minutes during weeks 1–6 and 174 minutes during weeks 7–12. Pre- and post-intervention assessments included handgrip strength, upper-body muscular endurance, aerobic performance (Cooper test), subcutaneous fat thickness and muscle thickness assessed by portable ultrasound, as well as blood pressure and heart rate variability. Data were analyzed using repeated-measures ANOVA (p < 0.05). RESULTS: The HG showed significant improvements in handgrip strength (+9.6%; p = 0.002), upper-body muscular endurance (+10.4%; p = 0.046), reductions in abdominal (−35.5%; p = 0.004) and axillary (−17.0%; p = 0.019) subcutaneous fat thickness, and an increase in thigh muscle thickness (+14.0%; p = 0.003). The CG showed no significant changes in neuromuscular or subcutaneous fat variables, except for an increase in abdominal muscle thickness (+10.0%; p = 0.02). CONCLUSION: The addition of HIFT to traditional military physical training promoted superior anthropometric and neuromuscular adaptations over 12 weeks, despite a lower weekly training volume. These findings suggest that HIFT is a time-efficient alternative for enhancing military operational readiness.
Read CV Diego Cezar Santiago dos SantosECSS Paris 2023: CP-MH21
INTRODUCTION: INTRODUCTION: While overall physical activity is clearly associated with better short-term and long-term health, It is well known that ultra-endurance races causes damage to skeletal and cardiac muscles. However, it still remains unclear whether these effects after exercise is a marker of occult disease, e.g., represents cardiac damage, or is harmless. Two competing hypotheses suggest that either (A) the biomarker response is a transient harmless and normal phenomenon, or (B) that repeated ultra-endurance races may in the long-term cause negative health consequences, such as atrial fibrillation. If hypothesis (B) is true, then it would be important to know whether individuals who are at a particular risk of developing such health consequences can be identified. To that end it is important to understand the individual response to ultra-endurance events. METHODS: Thirteen individuals (7 females) who participated in two Ironman races and had been included in the Iron(WO)man study were investigated. Blood samples were analyzed for cardiac troponin T, N-terminal of the prohormone brain natriuretic peptide (NT-proBNP), myoglobin, creatine kinase (CK) and serum creatinine. Stability of the biomarker response between the two occasions was estimated by calculating tracking coefficients using Spearman correlation. RESULTS: There were no intra individual differences in the post-race values in any of the studied biomarkers (all p>0.05). Overall, substantial tracking coefficients (rho=0.60-0.77) were identified as a sign of stability in the response, i.e., the presence of high and low responders. CONCLUSION: Based on the results of this study it appears that there are individuals who are at particular risk of getting high levels of biomarkers signaling cardiac and skeletal muscle damage. Future studies should be designed to answer the question whether there are unique responses in cardiac biomarker releases after exercise and whether they imply cardiovascular events in the future.
Read CV Tom DanielssonECSS Paris 2023: CP-MH21