膝伸肌厚度



驗證LLLT對進行離心訓練的膝關節伸肌的肥大和強化的影響。 三組：對照組（CG），培訓組（TG）和培訓+ LLLT組（TLG）。 CG沒有接受干預，而TG和TLG參與了為期8週的膝伸肌等速離心訓練計劃。 在每次訓練之前，只有來自TLG的受試者用LLLT（波長= 810nm;功率輸出= 200mW;總劑量= 240J）進行治療。 通過超聲和等速測力分別評估膝伸肌厚度和峰值扭矩。
  對於來自TG的受試者，肌肉厚度（15.4對9.4％），等長峰值扭矩（20.5對13.7％）和偏心峰值扭矩（32.2對20.0％）的TLG達到顯著更高的百分比變化。 在偏心訓練期間應用LLLT似乎可以改善健康受試者的肥厚反應和肌肉力量增加。
Verify the effect of LLLT on hypertrophy and strengthening of knee extensor muscles submitted to eccentric training. Three groups: Control Group (CG), Training Group (TG) and Training + LLLT Group (TLG). CG received no intervention, while TG and TLG were engaged on an 8-week knee extensor isokinetic eccentric training program. Only subjects from TLG were treated with LLLT (wavelength = 810 nm; power output = 200 mW; total dosage = 240 J) before each training session. Knee extensor muscle thickness and peak torque were assessed through ultrasonography and isokinetic dynamometry, respectively.

 TLG reached significantly higher percent changes compared to subjects from TG for sum of muscles’ thicknesses (15.4 vs. 9.4 %), isometric peak torque (20.5 vs. 13.7 %), and eccentric peak torque (32.2 vs. 20.0 %). LLLT applied before eccentric training sessions seems to improve the hypertrophic response and muscular strength gain in healthy subjects.

Baroni, Bruno Manfredini, et al. "Effect of low-level laser therapy on muscle adaptation to knee extensor eccentric training." European journal of applied physiology 115.3 (2015): 639-647.

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