View clinical trials related to Heat.
Filter by:The goal of this repeated measures study is to evaluate acute work rate adjustments during high-intensity interval training (HIIT) in a hot and temperate environment in healthy and active adults when using target heart rate to prescribe the exercise intensity. The main questions it aims to answer are: - Will HIIT based on target heart rate in a hot environment result in increased cardiovascular (i.e., elevated recovery HR) and thermal strain compared to HIIT in a temperate environment? - Will work rate be lowered to a greater extent during HIIT in a hot environment compared to a temperate environment in order to maintain target heart rate? - Will maximal aerobic capacity (V̇O2max) decrease to a greater extent after HIIT in the heat compared to a temperate environment? Procedures: Participants will complete 5 trials on a cycle ergometer. Trial 1 (Control Visit): Participants (n = 7) will have their maximal heart rate and V̇O2max measured in a temperate environment (~22 °C, 40% RH). Experimental Trials 2-5: The order of the trials will be counterbalanced and randomly assigned to participants. - 15TEMP: Participants will cycle at 70% of their maximum heart rate for 8 minutes as a warm-up, followed by one round of HIIT. The HIIT protocol consists of 4 minutes at 90% of maximum heart rate followed by 3 minutes at 70% of maximum heart rate, totaling 15 minutes, in a temperate environment (~22 °C, 40% RH). After the HIIT session, a graded exercise test will measure V̇O2max. - 15HEAT: Similar to 15TEMP, but participants will perform the HIIT protocol in a hot environment (~35 °C, 40% RH). - 43TEMP: Participants will cycle at 70% of their maximum heart rate for 8 minutes as a warm-up, followed by the HIIT protocol repeated four times (4 minutes at 90% of maximum heart rate and 3 minutes at 70% of maximum heart rate), totaling 43 minutes, in a temperate environment (~22 °C, 40% RH). - 43HEAT: Similar to 43TEMP, but participants will perform the HIIT protocol in a hot environment (~35 °C, 40% RH).
Military personnel are called upon to serve in hot, dry or humid climates, which places great demands on their ability to tolerate heat. Induced heat stress can impair performance and lead to pathologies. Faced with the challenges of global warming, this issue is becoming increasingly important in the practice of sport. While hyperthermia is known to impair endurance performance, the underlying thermophysiological responses and regulatory mechanisms during prolonged exercise remain poorly understood. The effects of hyperthermia on mental performance raise questions about the degradation of interoceptive capacities and the deleterious impact on behavioral regulation, an important component of thermal risk management in ultra-endurance exercise. What's more, despite the muscular and hydromineral consequences (rhabdomyolysis, renal failure, dehydration) of prolonged exercise, few data are available on recovery kinetics. A better understanding of the factors conditioning recovery quality could help limit the deleterious consequences of ultra-endurance exercise.
This study investigates the modification of the local-to-global connectivity pattern in response to experimental heat pain. Transcranial magnetic stimulation (TMS) will be applied to elicit electroencephalography (EEG) responses in healthy volunteers. The TMS-evoked potentials (TEPs) will be recorded and serve as a reflection of cortical reactivity to TMS. A thermal cutaneous heat stimulus will induce painful sensations.
This study is a double blinded randomized active placebo controlled trial in subjects with chronic low back pain. The trial compares pain relief by a device that delivered high level pulsed heat (45 °C) to pain relief delivered by a steady heat lower temperature device (37 °C). The hypothesis is that the high temperature pulsed heat device will produce significantly better pain relief as compared to the lower level steady heat device. The secondary hypothesis is that pain relief will occur faster in the high pulsed heat device as compared to the control device.
This study had three aims: 1. To determine the impact of consecutive days of exercise on thermoregulation and cardiovascular strain. 2. To determine the efficacy of a hand cooling device to cool individuals throughout a heat acclimation period. 3. To assess the maintenance of thermoregulatory and cardiovascular adaptations derived from heat acclimation during a 25-day intermittent exercise-heat exposure protocol.
Investigators propose an intervention trial of a comprehensive education and treatment bundle designed to reduce morbidity and mortality associated with heat-related illness for low resource settings. Two set of interventions will be developed each for emergency department and for community/home. These interventions will be developed by an internal expert group and will be customized and implemented at the home and emergency department (ED) levels, will include evidence-based educational training guidelines for ED health providers as well as educational messages targeting home and community in Karachi, Pakistan.
Objective- To see if the use of heat at home between physical therapy sessions results in better therapy outcomes in people with acute neck pain. Setting: Physical Therapy outpatient rehabilitation center Participants: 90 people with acute nonspecific neck pain broken into 4 groups. Intervention: All subjects will undergo 45 minutes of therapy 2 times per week for 2 weeks. All subjects will accomplish 1 hour of therapeutic exercise at home on days when there is no therapy. Thirty of the subjects will use ThermaCare neck wraps before home exercise, 30 used Ibuprofen plus ThermaCare neck wraps before home exercise, 15 will use a sham heat wrap and an Ibuprofen placebo each day (1200 mg / day) and the last 15 will be controls with conventional physical therapy.