College of Physical Education and Dance, Federal University of Goias-UFG, Universidade Federal de Goias, Goiania, Goias, Brazil.
College of Physical Education, University of Brasilia-UnB, Professor, Brasilia, Distrito Federal, Brazil.
PeerJ. 2024 Jul 23;12:e17576. doi: 10.7717/peerj.17576. eCollection 2024.
Breast cancer is the most common cancer in women worldwide, and its treatment usually involves a combination of many medical procedures, including surgery, chemotherapy, radiotherapy, and hormonal therapy. One of the detrimental effects on physical function is reduced upper limb muscle strength. This study aimed to evaluate upper body strength intra-day and inter-day (test-retest) reliability using the handgrip strength test (HGS) and the bilateral isometric bench press (BIBP) and the test-retest reliability of the one repetition maximum on the bench press (BP-1RM) in breast cancer survivors (BCS). Thirty-two (52.94 ± 8.99 yrs) BCS participated in this study. The muscle strength tests were performed in two different moments, three to seven days apart. Intraclass coefficient correlation (ICC) and coefficient of variation (CV) were used to assess the reliability. Standard error of measurement (SEM), typical error of measurement (TEM), and minimally detectable change (MDC) analyses were performed. The Bland-Altman analysis was used to assess the agreement between test-retest. We found a reliability that can be described as "high" to "very high" (ICC ≥ 0.88; CV ≤ 10%) for intra-day and test-retest. SEM% and MDC% were lower than 5% and 11%, respectively, for all intra-day testing. SEM% and TEM% ranged from 3% to 11%, and MDC% ranged from 9% to 23% in the test-retest reliability. The agreement demonstrated a systematic bias ranging from 2.3% to 6.0% for all testing, and a lower systematic bias may be presented in the non-treated side assessed by HGS and BIBP. HGS, BIBP, and BP-1RM assessments are reliable for measuring upper-body muscle strength in BCS.
乳腺癌是全球女性最常见的癌症，其治疗通常涉及多种医疗程序，包括手术、化疗、放疗和激素治疗。对身体功能的一个不利影响是上肢肌肉力量减弱。本研究旨在评估使用握力测试（HGS）和双侧等长 bench press（BIBP）的上肢力量日内和日间（测试-再测试）可靠性，以及乳腺癌幸存者（BCS）的 bench press 1 次最大重复次数（BP-1RM）的测试-再测试可靠性。32 名（52.94±8.99 岁）BCS 参与了这项研究。肌肉力量测试在相隔 3 至 7 天的两个不同时刻进行。使用组内系数相关性（ICC）和变异系数（CV）评估可靠性。进行了测量标准误差（SEM）、测量典型误差（TEM）和最小可检测变化（MDC）分析。Bland-Altman 分析用于评估测试-再测试之间的一致性。我们发现，日内和测试-再测试的可靠性可以描述为“高”到“非常高”（ICC≥0.88；CV≤10%）。所有日内测试的 SEM%和 MDC%均低于 5%和 11%。SEM%和 TEM%范围为 3%至 11%，MDC%范围为 9%至 23%，用于测试-再测试的可靠性。对于所有测试，一致性显示出系统偏差范围为 2.3%至 6.0%，HGS 和 BIBP 评估的非治疗侧可能呈现出较低的系统偏差。HGS、BIBP 和 BP-1RM 评估对于测量 BCS 的上肢肌肉力量是可靠的。
