![]() ![]() 4 Breath-by-breath analysis was performed using a metabolic cart (Ultima CardioO2 MCG Diagnostics Saint Paul, MN, United States) and data were averaged every 30 s. Cardiopulmonary exercise testing (CPET) and bioelectrical impedance analysis (BIA InBody 370 InBody Cerritos, CA, USA) were performed before and after program completion, per local standard. No other cardiovascular or resistance training was performed during this time. ![]() Running speed was chosen at a long-slow run pace. The first and last 5 min on the treadmill were dedicated to warm-up and cool-down. Each training session started at 45 min in duration and progressed to 60 min by the end of the program. Three self-administered training sessions per week were performed with lighter loads (20%–40% body weight) earlier in the program and gradually progressed to heavier loads (80%–100% body weight) over the 6 weeks ( Supplemental Material). ![]() The patient was cleared for physical activity by his surgeon before the start of the exercise. This case report was exempt from review by the Cincinnati Children’s Hospital Institutional Review Board.Ī 6-week rehabilitation program was designed for a 39-year-old male runner recovering from Achilles surgery that occurred 10 weeks prior. The purpose of this case report is to describe the feasibility of utilizing the zero-gravity treadmill (Alter-G Pro Alter-G Freemont, CA) and the subsequent fitness adaptations and body composition changes in a Masters athlete following rehabilitation from an Achilles surgery. ![]() 2, 3 Limited data have been published on utilizing this technique in Masters athletes, and no data have been reported on whether zero-gravity treadmill rehabilitation programs can help regain lost measures of fitness in these athletes. 1 Treadmills that alter the training load from 20% to 100% of body weight, such as zero-gravity treadmills, can decrease the load on the lower extremities during exercise and have been used to rehabilitate patients with osteoarthritis and following a total knee replacement, among other pathologies. Master-level runners (age 35 years and older) when injured often have a longer recovery time and greater loss of fitness compared to younger athletes. In conclusion, load-altering exercise may be helpful for the Masters-level athlete recovering from Achilles tendon surgery. On bioelectrical impedance analysis, there were small improvements in total weight, skeletal muscle mass, and adiposity felt to be within the standard of error for bioelectrical impedance analysis. On cardiopulmonary exercise testing, there were improvements in peak oxygen consumption (42.9 vs 47.3 mL/min/kg 118.6% vs 130.5% of predicted). Following the training program, the athlete was able to return to full weight-bearing running. Cardiopulmonary exercise testing and bioelectrical impedance analysis were performed before and after program completion. Three training sessions per week were performed with gradually increasing loads. A 6-week training program was designed for a 39-year-old male runner recovering from Achilles surgery using a zero-gravity treadmill. Data are lacking on the utilization of this strategy to allow injured Masters-level athletes to return to activity and regain their fitness. Zero-gravity treadmills allow alterations in training load. ![]()
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