Abstract：
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.
摘要：
对次要结果的分析研究了在固定自行车上进行单独规定的外部强度的超高强度间歇训练（HIT）的适用性。68名参与者，年龄中位数（最小；最大）为69岁（66;79），在不进行定期锻炼的时候，被随机分配到25次每周两次的超最大HIT（20分钟，间隔10×6秒）或中等强度训练（MIT，40分钟，间隔3×8分钟）。主要目标是关于适用性的结果；坚持规定的外部间隔强度，参与者报告了积极和消极事件，感知用力等级(RPE6-20)，和情感状态(感觉量表，FS-5-5）。次要目的是调查与运动相关的自我效能感（运动自我效能感量表）和动机（运动问卷中的行为规则）的变化。在超最大HIT中，对规定的外部间隔强度的总依从性为[中位数（min;max）]89%（55;100%），和100％（95;100％）在麻省理工学院。超最大HIT组报告了60％的阳性事件（186个中的112个）和36％的阴性事件（146个中的52个）。在培训期结束时,超最大HIT的中位(min;max)疗程RPE为15(12;17),MIT为14(9;15).至于FS，超最大HIT和MIT的会期内最后评分中位数为3(-1;5),MIT的会期内评分中位数为3(1;5).与运动相关的动机增加（相对自主指数得分的平均差异=1.54，95%CI[0.69;2.40]），而自我效能感没有变化(平均差=0.55，95%CI[-0.75;1.82])，无论群体。这项研究为老年人在监督小组设置中的超最大HIT提供了支持。
