The Effect of 12 Weeks of Theraband Resistance Training on IGF-1 and FGF-2 Levels and Their Relationships with Myokines on Bone Mineral Density of Osteosarcopenic Obese Women

Muscle-induced insulin-like growth factor 1 (IGF-1) and fibroblast growth factor 2 (FGF-2) are important factors for muscle growth and maintenance.

This study aimed to investigate the effect of 12 weeks of Theraband resistance training on IGF-1 and FGF-2 levels and their relationships with myokines on bone mineral density (BMD) in older women with osteosarcopenic obesity.

In this single-blind randomized clinical trial, 48 older women with osteosarcopenic obesity (mean age: 64.63 ± 3.68 years; fat percentage 45.4 ± 6.6%; BMI 33.1 ± 3.71 kg/m2; and T score of bone minerals density of femur and 1-4 lumbar spine -1.86 ± 1.42, based on the results of the DEXA test) were randomly divided into control (n = 22) and training (n = 26) groups. The training group performed 12 weeks of Theraband resistance training for all major muscle groups. Blood samples were collected 48 hours before and 12 weeks after the intervention.

After 12 weeks, a significant difference was observed in IGF-1 (P = 0.033) levels in the training group compared to the control group. Also, FGF-2 (P = 0.003) and IGF-1 (P = 0.013) levels increased significantly in the training group. However, there was no significant relationship between IGF-1 (P = 0.240) and FGF-2 (P = 0.806) levels and BMD.

Theraband resistance training can be an appropriate training strategy to improve muscle mass in older adults with osteosarcopenic obesity by increasing IGF-1 and FGF-2 levels.