The Effect of Forward and Backward Treadmill walking Training on Muscular Strength of Lower Extremities before and after Exhausting Exercise / 대한스포츠의학회지

The purpose of this study was to investigate the physiological effects of forward and backward walking training on lower extremity muscle strength before and after exhausting exercise. Fourteen healthy male adults were randomly divided into backward walking (BW, n=7) and forward walking (FW, n=7) training groups. Each group took part in pre-test consisted of knee extensor and flexor isokinetic peak torque (PT), total work (TW), electromyography (EMG) before and after exhausting exercise. Exhausting exercise was used to measure lower extremity endurance, which is incremental treadmill running using the Bruce protocol. The BW and FW training groups participated in a 6 weeks training program, consisted of 3 sessions per week for a total of 18 sessions. After finishing the training program, the post-test was performed using the same method. BW training group showed significant increases in knee extensor/flexor PT (4.6%/13.9%), TW (17.34%), EMG (35.9%) before exhausting exercise and PT (23.9%/18.8%), TW (46.7%), EMG (59.8%) after exhausting exercise. But FW training group did not show a significant increase in knee extensor/flexor PT (0.1%/3.2%), TW (1.8%), EMG (10.9%) before exhausting exercise and PT (2%/1%), TW (5.6%), EMG (17.2%) after exhausting exercise. BW training has positive effects on lower extremity muscle strength, especially muscle endurance that is important to prevent muscle weakness during competitive sports.

Comparison between the Effect of Transforaminal Steroid Injection and Transforaminal Steroid Injection Combined with Spinal Decompressor on Lumbar Disc Herniation

OBJECTIVE: To assess the short-term clinical effect of a new spinal decompression device (DRX-3000) combined with transforaminal steroid injection (TFI) in comparison with TFI only in patients with lumbar herniated intervertebral disc (HIVD) METHOD: Fourty-one patients diagnosed as lumbar intervertebral disc herniation were recruited and divided into two therapeutic groups. Eighteen patients were treated with DRX-3000 combined with TFI. Twenty-three patients were treated with only TFI. The visual analogue scale (VAS), straight leg rasing test (SLR), radiating pain, Oswestry Disability Index (ODI), sitting tolerance, standing tolerance and sleeping tolerance were measured before treatment and 4 weeks after treatment. RESULTS: VAS, radiating pain, sitting tolerance and ODI were significantly improved after treatment in all patients (p<0.05). SLR and sleeping tolerance were significantly improved in combined treatment group and standing tolerance were significantly improved in TFI group after treatment (p<0.05). After treatment, degree of VAS decrease was larger in combined treatment group than TFI group(p<0.05). CONCLUSION: Spinal decompression with TFI was more effective than only TFI in patients with lumbar HIVD in a short period.