Impact of Neck Cooling Collar on Exercise Performance in the Heat
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 12
- 试验地点
- 1
- 主要终点
- Esophageal Temperature Change
研究概览
简要总结
During exercise in the heat, the thermoregulatory system impacts performance in an athletic population. Increased in core body temperature could lead to development of heat-related illnesses and impair physical performance. To facilitate heat loss and optimize performance during exercise in the heat, various cooling strategies, including cold water immersion and wearable cooling devices have been previously explored. Although whole body cooling by cold water immersion is considered to be the most effective way to reduce core body temperature, this cooling method would not be feasible for athletes during practice or competition. Therefore, previous studies strongly recommended neck cooling during exercise because of the rate of heat dissipation through the large blood vessel and accessibility compared to other body part. Furthermore, multiple studies reported that the neck cooling could improve aerobic performance (i.e. running distance and time). In addition to physiological changes, human prefer to be cool in the neck region as well as the face in hot environment. Thus, local cooling of the neck is efficient way to reduce thermal discomfort during heat exposure. The novel neck cooling collar device (NeuroRescue Inc., Lafayette, LA) used in the current study may be able to produce powerful effect of conductive cooling, which result in improving performance and also reduce thermal discomfort during exercise in the heat.
While this neck cooling collar would assist athletes in improving sports safety and performance by decreasing skin temperature around the neck, the effectiveness of this neck cooling collar on core temperature was not examined at this point. Moreover, other physiological and perceptual changes are important to assess along with changes in core body temperature. Therefore, this study aims to examine how internal body temperature, heart rate, perceptual measures, and athletic performance are affected by the novel neck cooling collar during exercise in the heat.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Crossover
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 35 Years（Adult）
- 性别
- Male
- 接受健康志愿者
- 是
入选标准
- •Physically active (at least 30 minutes of exercise 3-5 days per week) male
- •been cleared by the medical monitor for this study
- •Have a VO2max >45ml/kg/min
排除标准
- •Have a current musculoskeletal injury that would limit their physical activity or preclude the participant from walking, jogging, running, sprinting, or cutting.
- •Chronic health problems that affect your ability to thermoregulate (disorders affecting the liver, kidneys or the ability to sweat normally)
- •Fever or current illness at the time of testing
- •History of cardiovascular, metabolic, or respiratory disease
- •A family member died for no apparent reason, had a heart attack, died from heart problems, or sudden death before the age of 50
- •Current musculoskeletal injury that limits their physical activity
- •Currently taking a medication that is known to influence body temperature (amphetamines, antihypertensives, anticholinergics, acetaminophen, diuretics, NSAIDs, aspirin)
- •Are a female. Due to the internal body temperature gradient that accompanies the menstrual cycle, inclusion of females may not provide the most controlled internal body temperature data for this study.
- •Have a history of heat related illness
- •Throat or gastroesophageal diseases including gastroesophageal reflux disease (aka, GERD) or difficulty swallowing
- •Have any allergies or adverse reactions to the cold (e.g. Cold Urticaria, Raynauds Phenomenon/Disease, or cryoglobulinaemia)
- •Any COVID-19 related symptoms including fever, cough, shortness of breath or difficulty breathing, gastrointestinal discomfort (nausea, vomiting, and/or diarrhea), repeated shaking with chills, muscle pain (unrelated to exercise), headache, sore throat, new loss of taste or smell, congestion or runny nose.
- •Participant with clinical diagnosis of COVID-19 infection or positive result on a COVID-19 test due to concern about cardiac complications.
研究组 & 干预措施
Control
Passive rest - no intervention provided
Ice towel cooling
About 6-12 cooling periods of ice towel lasting between 5-20 minutes will be done and equally distributed throughout the respective trials. Towels dipped in ice water will be placed on subjects necks during this time.
干预措施: Ice Towel (Other)
NeuroRescue Neck Cooling Collar
About 6-12 cooling periods of neck cooling with the NeuroRescue collar lasting between 5-20 minutes will be done and equally distributed throughout the respective trials.
干预措施: NeuroRescue Cooling Collar (Other)
结局指标
主要结局
Esophageal Temperature Change
时间窗: Up to 4 weeks
Esophageal Temperature Change
次要结局
- Performance Test Change(Up to 4 weeks)
- Perceptual Scale Change(Up to 4 weeks)
- Cognitive Functioning Change- Automated Neuropsychological Assessment Metrics (ANAM) Test System(Up to 4 weeks)
- Rectal Temperature Change(Up to 4 weeks)
- Cognitive Functioning Change - Automated Neuropsychological Assessment Metrics (ANAM) Test System(Up to 4 weeks)
- Heart Rate Change(Up to 4 weeks)
研究者
Douglas J Casa
Principal Investigaator
University of Connecticut