Langley

Global warming and more frequent heat waves increase heat stress for people who work, exercise, or compete outdoors, which can lower exercise performance and cause heat-related illnesses. This research aims to find out if adding a heat acclimation maintenance period after initial heat acclimation improves exercise performance in the heat more than heat acclimation alone in healthy trained females. The study focuses on female participants because there is limited data on how females respond to heat acclimation, despite their growing involvement in demanding sports and jobs. Participants will be divided into two groups: one group will undergo 10 sessions of heat acclimation over two weeks followed by three weeks of heat acclimation maintenance with three heat sessions per week. They will perform exercise in heat conditions wearing specific clothing and use scales to monitor effort and heat sensation. The control group will complete the same exercise sessions in cool conditions without heat acclimation. Various measures including heart pumping capacity, blood volume, core temperature, and exercise performance will be assessed before, during, and after the interventions. Participants will be tested before, midway, and after the interventions using heat performance tests to evaluate changes. Researchers will measure VO2max, plasma volume, core temperature, and cardiac output to analyze cardiovascular and hematological responses. Data will be statistically analyzed to compare treatment effects. The study will last about five weeks, involving 19 one-hour exercise sessions and multiple physiological assessments to monitor safety and effectiveness.

Researchers are evaluating the effectiveness of two therapies—cognitive behavioral therapy (CBT) and cognitive compensatory strategy training (CCST)—for adults experiencing persistent memory problems after a concussion. This study aims to determine if these therapies improve how participants feel about their memory compared to usual care, and to compare the benefits of CBT and CCST. The study is a randomized controlled trial conducted at multiple sites, with participants unaware of the other study arms and hypotheses. The study involves three groups: one receiving CBT, one receiving CCST, and a covert waitlist control group, assigned in a 2:2:1 ratio. CBT is provided by a psychologist through 10 individual videoconference sessions focused on helping participants use their memory more normally and reduce fear of memory lapses. CCST is delivered by an occupational therapist across 10 individual videoconference sessions where participants learn or optimize memory strategies to reduce memory problems in daily life. Participants take part in assessments including questionnaires about their satisfaction with memory at 20 weeks. They must have ongoing memory concerns and stable internet access to join videoconference sessions. The study collects information on subjective memory functioning, monitors progress through therapy, and evaluates safety. The total study duration includes treatment and follow-up periods to measure outcomes effectively.