Exercise Based Cancer Rehabilitation Program Improves Phase Angle in Breast Cancer Survivors

International Journal of Exercise Science 15(3): 1444-1456, 2022. Phase angle (PhA) is an index of cell membrane integrity and prognostic indicator of survival and quality of life in cancer survivors. The efficacy of exercise-based cancer rehabilitation programs (ExCR) on PhA is unknown. To assess the effect of ExCR on PhA in breast cancer survivors. Fifty-nine female breast cancer survivors (61 ± 9 years) were referred to the ExCR by their oncologist and participated in one-on-one exercise-based training for 90 minutes, 3 times a week, for 12 weeks. Training sessions included 45 minutes of resistance training at intensities between 40-85% of 1-repetition maximum with a rate of perceived exertion (RPE) between 3-8, 30 minutes of cardiorespiratory training at intensities between 40-85% of heart rate reserve with an RPE between 3-8, and 15 minutes of flexibility training. Participants completed pre- and post-measurements of body composition, cardiorespiratory endurance, flexibility, muscular endurance, muscular strength, and PhA (Inbody 770). PhA significantly increased (p \u3c 0.05) after ExCR (PhApre = 4.56; PhApost = 4.64; Δ = 1.8%). Changes in measures of muscular strength have a weak but significant positive relationship (r = 0.20-0.39; p \u3c 0.05) with changes in PhA. There was no relationship between changes in PhA and changes in cardiorespiratory endurance or muscular endurance. A 12-week ExCR significantly improves PhA in breast cancer survivors. Training muscular strength may be an integral component of ExCR with the objective of improving PhA

Muscular Strength Predicts Phase Angle in Breast Cancer Survivors

Topics in Exercise Science and Kinesiology Volume 4: Issue 1, Article 4, 2023. Phase angle (PhA) has emerged as a prognostic indicator of survival and quality of life (QOL) in cancer patients. Identifying measures of physical fitness that correlate with PhA can provide guidance toward optimizing cancer rehabilitation programs and future research. The purpose was to examine the relationship between PhA and physical fitness in breast cancer survivors. Sixty-three breast cancer survivors (60 ± 9 years, PhA 4.59±0.52, mean±SD) completed assessments for muscular strength, muscular endurance, cardiorespiratory endurance, flexibility, and body composition. PhA and body composition were measured using bioimpedance analysis (Inbody 770) at 50 KHz. The correlations between phase angle and measures of fitness were evaluated using Pearson coefficients. Simple and multiple linear regression was used to test if measures of muscular strength, muscular endurance, and cardiorespiratory endurance predict PhA. Linear regression analysis showed that incline bench press 1-RM alone explains 28% (r2 = 0.28; P2peak explain 32% (r2 =0.32; PThe prioritization of muscular strength for improving PhA in exercise-based cancer rehabilitation programs may be of importance

Phase Angle Is Associated with Muscular Fitness in Breast Cancer Survivors

Phase angle (PhA) has emerged as a prognostic indicator of survival and quality of life (QOL) in cancer patients. Identifying measures of physical fitness that correlate with PhA can provide guidance towards optimizing cancer rehabilitation programs. PURPOSE: To examine the relationship between PhA and physical fitness (muscular strength, muscular endurance, cardiorespiratory endurance, flexibility, and body composition) in breast cancer survivors. METHODS: Seventy female breast cancer survivors (61 ± 9 years, PhA 4.57 ± 0.51) were referred to the rehabilitation clinic by their oncologist. Participants completed assessments for muscular strength (predicted 1-repetition maximum of incline bench press, seated cable row, latissimus dorsi pulldown, leg press, leg curl, leg extension, and hand grip strength), muscular endurance (chair squat test, and plank hold), cardiorespiratory endurance (treadmill predicted VO2 peak), flexibility (sit and reach, back scratch test, and shoulder range of motion), and body composition (lean body mass, body fat %). PhA and body composition were measured using bioimpedance analysis (Inbody 770) at 50 KHz. The correlations between phase angle and measures of fitness were evaluated using Pearson coefficients. RESULTS: PhA was significantly and positively correlated with muscular strength (incline bench press, r=0.54,

Phase Angle Is Associated with Muscular Fitness in Breast Cancer Survivors

Phase angle (PhA) has emerged as a prognostic indicator of survival and quality of life (QOL) in cancer patients. Identifying measures of physical fitness that correlate with PhA can provide guidance towards optimizing cancer rehabilitation programs. PURPOSE: To examine the relationship between PhA and physical fitness (muscular strength, muscular endurance, cardiorespiratory endurance, flexibility, and body composition) in breast cancer survivors. METHODS: Seventy female breast cancer survivors (61 ± 9 years, PhA 4.57 ± 0.51) were referred to the rehabilitation clinic by their oncologist. Participants completed assessments for muscular strength (predicted 1-repetition maximum of incline bench press, seated cable row, latissimus dorsi pulldown, leg press, leg curl, leg extension, and hand grip strength), muscular endurance (chair squat test, and plank hold), cardiorespiratory endurance (treadmill predicted VO2 peak), flexibility (sit and reach, back scratch test, and shoulder range of motion), and body composition (lean body mass, body fat %). PhA and body composition were measured using bioimpedance analysis (Inbody 770) at 50 KHz. The correlations between phase angle and measures of fitness were evaluated using Pearson coefficients. RESULTS: PhA was significantly and positively correlated with muscular strength (incline bench press, r=0.54,