de Oliveira Vanini Jacyara, Karloh Manuela, Coelho Bosco Ricardo, de Souza Michelle Gonçalves, Karsten Marlus, Matte Darlan Laurício
Graduate Program in Physical Therapy, Santa Catarina State University, Florianópolis 88080-350, Brazil.
Archdiocesan Consul Carlos Renaux Hospital, Brusque 88353-902, Brazil.
Int J Environ Res Public Health. 2025 Jan 9;22(1):82. doi: 10.3390/ijerph22010082.
The study aimed to investigate the reliability, construct, and discriminant validity of the Behavioral Regulation in Exercise Questionnaire 3 (BREQ-3) for evaluating motivational regulations and self-determination for exercise in Brazilian adults aged 50 years or older. The study assessed motivation for exercise, peripheral muscle strength, physical performance, functional capacity, cardiovascular fitness, and frailty phenotype. Two raters independently applied the BREQ-3. The reliability was evaluated using internal consistency, test-retest reliability, and agreement. Construct validity was tested with Spearman's correlation coefficient and discriminant validity with the Kruskal-Wallis test. Eighty individuals participated in the reliability study, and 136 participated in the validation study. Motivational regulation and Self-Determination Index (SDI) internal consistency ranged from 0.55 to 0.82. Test-retest reliability ranged from 0.77 (95% CI 0.64-0.85) to 0.91 (95% CI 0.85-0.94), and inter-rater ranged from 0.80 (95% CI 0.68-0.87) to 0.92 (95% CI 0.88-0.95), except for amotivation, which had poor inter-rater and test-retest reliability. Additionally, moderate to weak correlations between various types of motivation and physical function tests were found ( < 0.05). Frail and pre-frail participants had lower SDI, integrated, and intrinsic motivation regulation than non-frail individuals ( < 0.05). This study confirmed the reliability, construct, and discriminative validity of the Brazilian Portuguese version of the BREQ-3 for evaluating motivational regulations and self-determination for exercise in older adults.
该研究旨在调查运动行为调节问卷3（BREQ - 3）在评估50岁及以上巴西成年人运动动机调节和自我决定方面的信度、结构效度和区分效度。该研究评估了运动动机、外周肌肉力量、身体表现、功能能力、心血管健康和衰弱表型。两名评分者独立应用BREQ - 3。使用内部一致性、重测信度和一致性来评估信度。用斯皮尔曼相关系数检验结构效度，用克鲁斯卡尔 - 沃利斯检验区分效度。80人参与了信度研究，136人参与了效度研究。动机调节和自我决定指数（SDI）的内部一致性范围为0.55至0.82。重测信度范围为0.77（95%CI 0.64 - 0.85）至0.91（95%CI 0.85 - 0.94），评分者间信度范围为0.80（95%CI 0.68 - 0.87）至0.92（95%CI 0.88 - 0.95），除了无动机状态，其评分者间信度和重测信度较差。此外，发现各种动机类型与身体功能测试之间存在中度至弱的相关性（<0.05）。虚弱和衰弱前期参与者的SDI、整合性和内在动机调节低于非虚弱个体（<0.05）。本研究证实了巴西葡萄牙语版BREQ - 3在评估老年人运动动机调节和自我决定方面的信度、结构效度和区分效度。
