Frykholm Erik, Simonsson Emma, Levik Sandström Sofi, Hedlund Mattias, Holmberg Henrik, Johansson Bengt, Lindelöf Nina, Boraxbekk Carl-Johan, Rosendahl Erik
Department of Community Medicine and Rehabilitation, Umeå University, 901 87, Umeå, Sweden.
Department of Community Medicine and Rehabilitation, Umeå University, 901 87, Umeå, Sweden.
Psychol Sport Exerc. 2024 Jul;73:102647. doi: 10.1016/j.psychsport.2024.102647. Epub 2024 Apr 10.
This analysis of secondary outcomes investigated the applicability of supramaximal high-intensity interval training (HIT) with individually prescribed external intensity performed on stationary bicycles. Sixty-eight participants with a median (min; max) age of 69 (66; 79), at the time not engaged in regular exercise were randomized to 25 twice-weekly sessions of supramaximal HIT (20-min session with 10 × 6-s intervals) or moderate-intensity training (MIT, 40-min session with 3 × 8-min intervals). The primary aim was outcomes on applicability regarding; adherence to prescribed external interval intensity, participant reported positive and negative events, ratings of perceived exertion (RPE 6-20), and affective state (Feeling Scale, FS -5-5). A secondary aim was to investigate change in exercise-related self-efficacy (Exercise Self-Efficacy Scale) and motivation (Behavioural Regulations in Exercise Questionnaire-2). Total adherence to the prescribed external interval intensity was [median (min; max)] 89 % (56; 100 %) in supramaximal HIT, and 100 % (95; 100 %) in MIT. The supramaximal HIT group reported 60 % of the positive (112 of 186) and 36 % of the negative (52 of 146) events. At the end of the training period, the median (min; max) session RPE was 15 (12; 17) for supramaximal HIT and 14 (9; 15) for MIT. As for FS, the median last within-session rating was 3 (-1; 5) for supramaximal HIT and 3 (1; 5) for MIT. Exercise-related motivation increased (mean difference in Relative Autonomy Index score = 1.54, 95 % CI [0.69; 2.40]), while self-efficacy did not change (mean difference = 0.55, 95 % CI [-0.75; 1.82]), regardless of group. This study provide support for supramaximal HIT in supervised group settings for older adults.
这项关于次要结果的分析研究了在固定自行车上进行的、根据个体情况规定外部强度的超最大强度间歇训练（HIT）的适用性。68名参与者，年龄中位数（最小值；最大值）为69岁（66岁；79岁），当时未进行规律锻炼，被随机分为两组，一组进行25次每周两次的超最大强度HIT训练（每次训练20分钟，包含10个6秒的间歇），另一组进行中等强度训练（MIT，每次训练40分钟，包含3个8分钟的间歇）。主要目的是评估关于以下方面的适用性结果：对规定的外部间歇强度的依从性、参与者报告的积极和消极事件、自觉用力程度评分（RPE 6 - 20）以及情感状态（感觉量表，FS -5 - 5）。次要目的是研究与运动相关的自我效能（运动自我效能量表）和动机（运动问卷-2中的行为调节）的变化。超最大强度HIT组对规定的外部间歇强度的总依从性为[中位数（最小值；最大值）]89%（56%；100%），MIT组为100%（95%；100%）。超最大强度HIT组报告了60%的积极事件（186件中的112件）和36%的消极事件（146件中的52件）。在训练期结束时，超最大强度HIT组每次训练的RPE中位数（最小值；最大值）为15（12；17），MIT组为14（9；15）。至于FS，超最大强度HIT组最后一次训练中的评分中位数为3（-1；5），MIT组为3（1；5）。无论组别如何，与运动相关的动机均有所增加（相对自主指数得分的平均差异 = 1.54，95%置信区间[0.69；2.40]），而自我效能没有变化（平均差异 = 0.55，95%置信区间[-0.75；1.82]）。这项研究为在监督下的团体环境中对老年人进行超最大强度HIT训练提供了支持。
