Data for: Physical load and cognitive performance

ID=the numerical identification of examined person (EP) age=19-27 pad_chair: pad=2; chair=1 gender: man=2; female=1 BoCmin=correctly cancelled symbols of Bo test/min or BoC1min...BoC20min BoCSUMmin=sum of correctly cancelled symbols of Bo test from all 20 minutes BoCMEANmin=mean of correctly cancelled symbols of Bo test from all 20 minutes BoEmin=incorrectly cancelled symbols (errors) of Bo test/min or BoE1min...BoE20min BoESUMmin=sum of incorrectly cancelled symbols (errors) of Bo test from all 20 minutes BoEMEANmin=mean of incorrectly cancelled symbols (errors) of Bo test from all 20 minutes VTA=absolute tidal volume change. VTA was subsequently calculated and expressed in liters. 0.5 l is the initial mean value. VTR=relative tidal volume change MV=minute ventilation TEMP=body temperature SCL=skin conductance level HRVSampEn=Heart rate variability sample entropy Pulse_frequency=heart rate (HR) Resp_frequency=respiratory rate (RR) HFLF_welch=low frequency to high frequency ratio, computed by Welch phase_exp=1-4 1: The control phase of the measurement lasted 2 minutes. In this phase, all EPs sat on chairs with no pads. Its purpose was to analyze the initial values of the EPs’ physiological functions. These values were supposed to be identical or very similar in the experimental group and the control group. Minutes 0,1. 2: The following rest phase of the measurement lasted 20 minutes. Control-group EPs continued sitting on chairs without pads, while EPs in the other group were seated on pads that had been added to their chairs. They would then sit on these pads until the end of the fourth phase, the final step in the experiment. During the second phase, EPs were not to show any deliberate cognitive activity. Activities involving inadvertent attention, however, were allowed, for example, looking forward at the table or out of the window. Minutes 2...21. 3: The load phase lasted 20 minutes, during which the EPs continuously filled out of the Bo test (Bourdon test T-78: the test of sustained, selected attention). Minutes 22...41. 4: The verification phase lasted 2 minutes. Following the end of the cognitive load, this phase also served to compare the development of physiological functions in the two groups of EPs in connection with the use of the pad, particularly with respect to exploring the rate of EPs’ adaptation after performance (load). Minutes 42,43.本数据集包含如下字段定义与实验流程说明： 1. 字段说明： - ID：被试（examined person, EP）的数字编号 - age：被试年龄范围为19~27岁 - pad_chair：座椅坐垫状态标识参数，其中pad=2代表加装坐垫，chair=1代表仅使用无垫座椅 - gender：性别标识，man=2代表男性，female=1代表女性 - BoCmin：布尔登测试（Bourdon test, Bo test）每分钟正确划消符号数，对应BoC1min~BoC20min的分时段数据 - BoCSUMmin：布尔登测试全部20分钟时段内正确划消符号的总数量 - BoCMEANmin：布尔登测试全部20分钟时段内正确划消符号的平均数量 - BoEmin：布尔登测试每分钟错误划消符号（失误）数，对应BoE1min~BoE20min的分时段数据 - BoESUMmin：布尔登测试全部20分钟时段内错误划消符号的总数量 - BoEMEANmin：布尔登测试全部20分钟时段内错误划消符号的平均数量 - VTA：绝对潮气量变化（absolute tidal volume change, VTA），经计算后以升为单位，初始平均值为0.5升 - VTR：相对潮气量变化 - MV：每分通气量（minute ventilation） - TEMP：体温 - SCL：皮肤电导水平（skin conductance level） - HRVSampEn：心率变异性样本熵（Heart rate variability sample entropy） - Pulse_frequency：心率（heart rate, HR） - Resp_frequency：呼吸频率（respiratory rate, RR） - HFLF_welch：通过Welch法计算的低频与高频功率比 - phase_exp：实验阶段编号，取值为1~4，各阶段详情如下： 1. 阶段1（对照阶段）：时长2分钟，所有被试坐在无垫座椅上，用于采集被试生理功能的初始基线值，该基线值在实验组与对照组中应保持一致或高度相似，对应时间区间为第0、1分钟。 2. 阶段2（休息阶段）：时长20分钟，对照组被试继续乘坐无垫座椅，实验组被试则乘坐加装了坐垫的座椅，该坐姿将持续至第四阶段实验结束。此阶段内，被试不得开展刻意的认知活动，但允许存在无意注意力活动，例如直视桌面或窗外，对应时间区间为第2~21分钟。 3. 阶段3（负荷阶段）：时长20分钟，被试需持续完成布尔登测试（Bourdon test T-78：持续性选择性注意力测试），对应时间区间为第22~41分钟。 4. 阶段4（验证阶段）：时长2分钟，在认知负荷任务结束后，该阶段用于对比两组被试在使用坐垫与否的情况下生理功能的变化情况，尤其用于探究被试完成认知负荷任务后的适应速率，对应时间区间为第42、43分钟。