Data Sheet 1_Self-selected vs. prescribed aerobic exercise intensity: impacts on pleasure in women with obesity.xlsx

IntroductionSelf-selection of aerobic training intensity is an approach that allows practitioners to develop autonomy (choice of pace), improve physical fitness, and contribute to better affective responses and training adherence. However, it is still unclear whether self-selection of training intensity in group settings is comparable to individual training conditions. The aim of the present study was to compare the effect of three aerobic training protocols on psychophysiological responses in physically inactive adult obese women.
MethodsThe sample consisted of 90 women with a mean age of 48.3 ± 5.5 years and BMI of 31.2 ± 4.8 kg/m2, who participated in three treadmill aerobic training protocols: 1- Control group (IPI) with individually prescribed intensity (64 to 76% of HRmax), 2- Small group (SGS) with self-selected intensity, and 3- Individual with self-selected intensity (ISS). Heart rate (HR), total session volume (VL), affective valence was determined by feeling scale (FS), enjoyment was determined by Physical Activity Enjoyment Scale (PACES), intention to repeat the exercise session (INT), and Basic Psychological Needs Satisfaction Scale (BPNFS) were evaluated. Statistical analyses were conducted using two-way ANOVA for HR and FS, and one-way ANOVA for VL, PACES, INT, and BPNFS with Tukey post hoc test and significance criteria (p < 0.05).
ResultsThe results showed that HR and VL were similar (p > 0.05) between the protocols IPI, SGS and ISS, while FS, PACES, and INT were significantly higher in SGS and ISS than IPI protocols (p < 0.05). BPNFS also presented better results for the SGS and ISS protocols (p < 0.05).
DiscussionThese findings suggest that the intensity and training volume were similar among different protocols. Affective responses were more positive perceived in SGS and ISS protocols.
ConclusionWe conclude that intensity self-selection is a safe, effective, and comparable strategy to prescribed intensity at moderate levels, providing a more enjoyable experience that may contribute to greater adherence to aerobic training.

引言：有氧训练强度的自主选择是一种训练方法，可使训练者获得自主性（即自主选择运动节奏）、提升体能，并有助于产生更积极的情绪反应以及提高训练依从性。然而，目前尚不清楚集体环境下的自主选择训练强度，是否与单人训练条件下的效果相当。本研究旨在对比三种有氧训练方案，对久坐不动的成年肥胖女性的心理生理反应的影响。

研究方法：本研究共纳入90名女性受试者，平均年龄为48.3±5.5岁，身体质量指数（Body Mass Index, BMI）为31.2±4.8 kg/m²；所有受试者均参与三种跑台有氧训练方案：1. 对照组（IPI）：采用最大心率（Heart Rate Max, HRmax）64%~76%的个体化处方强度；2. 小团体组（SGS）：采用自主选择训练强度；3. 单人自主组（ISS）：采用自主选择训练强度。本研究评估的指标包括：心率（Heart Rate, HR）、单次训练总训练量（VL）、采用情感量表（Feeling Scale, FS）测定的情绪效价、采用身体活动愉悦感量表（Physical Activity Enjoyment Scale, PACES）测定的运动愉悦感、重复训练的意愿（INT），以及基本心理需求满足量表（Basic Psychological Needs Satisfaction Scale, BPNFS）。统计学分析方面，针对HR和FS采用双因素方差分析（two-way ANOVA）；针对VL、PACES、INT及BPNFS则采用单因素方差分析（one-way ANOVA），并结合Tukey事后检验（Tukey post hoc test），显著性阈值设定为p<0.05。

研究结果：结果显示，IPI、SGS与ISS三种训练方案的HR和VL均无显著差异（p>0.05）；而SGS与ISS组的FS、PACES及INT得分均显著高于IPI组（p<0.05）。此外，SGS与ISS组的BPNFS得分同样更优（p<0.05）。

讨论：本研究结果表明，不同训练方案的训练强度与训练总训练量均无显著差异；而SGS与ISS方案下的情绪反应更为积极。

结论：综上，自主选择训练强度是一种安全、有效且与中等强度处方训练强度效果相当的策略，可带来更愉悦的运动体验，进而有助于提升有氧训练的依从性。