Trabucchi Pietro, Savoldelli Aldo, Mourot Laurent, Vacher Philippe, Pellegrini Barbara, Schena Federico
Dipartimento Neuroscienze, Biomedicina e Movimento, Università di Verona, Verona, Italy.
Centro di Ricerca "Sport, Montagna e Salute", Università di Verona, Rovereto, Italy.
Front Physiol. 2022 Apr 8;13:804710. doi: 10.3389/fphys.2022.804710. eCollection 2022.
The aim of the present study was to investigate the relationships between Perceived Control (PC) and Heart rate variability (HRV) during a 27-day expedition, during which an unsupported crossing was made from the west coast to the east coast of Greenland (across the Ice Sheet); and that therefore a high PC represents a favourable factor for recovery and stress management.
Four subjects participated in the study. PC was measured on alternated days in the evening at the end of the day, using the Pearlin Mastery Scale; and the next day, upon waking, heart rate using a wrist heart rate monitor and a chest strap. Together with the PC, the perceived effort was measured through the CR-100 Borg scale and each subject was asked to indicate the most emotionally significant event of the day.Time and frequency domain indices for heart rate variability were calculated.
Several correlations were observed between PC and HRV indices. In particular two indices in the time domain, standard deviation of all NN intervals (SDNN) (rrm = 0.51) and root mean square of successive (RMSSD) (rrm = 0.46), showed a significant and strong positive correlation.
The existence of a positive correlation between PC and cardiac vagal regulation is of great interest to individuals immerged into extreme situations, because it can affect performance or prevents maladaptive states or injuries. To improve stress management, it could be convenient for members of extreme expeditions to adopt forms of cognitive training that modify their cognitive appraisal in order to raise their perception of control.
本研究旨在调查在一次为期27天的探险过程中，感知控制（PC）与心率变异性（HRV）之间的关系。在这次探险中，团队从格陵兰岛西海岸无补给穿越至东海岸（穿越冰盖）；因此，较高的PC代表着恢复和压力管理的有利因素。
四名受试者参与了本研究。使用皮尔林掌控量表在每天结束时的晚上隔天测量PC；次日醒来时，使用腕式心率监测器和胸带测量心率。除了PC，通过CR - 100博格量表测量感知努力程度，并要求每位受试者指出当天最具情感意义的事件。计算心率变异性的时域和频域指标。
观察到PC与HRV指标之间存在若干相关性。特别是时域中的两个指标，所有NN间期的标准差（SDNN）（rrm = 0.51）和连续差值的均方根（RMSSD）（rrm = 0.46），显示出显著且强烈的正相关。
PC与心脏迷走神经调节之间存在正相关，这对于身处极端情况的个体非常重要，因为它会影响表现或预防适应不良状态或损伤。为了改善压力管理，极端探险队成员采用能够改变其认知评估以提高其控制感的认知训练形式可能会很方便。
