skeletal muscle contractility, self-reported pain and tissue sensitivity in females with neckshoulder pain and upper trapezius myofascial trigger points-- a randomized intervention study骨骼肌收缩性,自我报告的疼痛和组织敏感性在雌性neckshoulder疼痛和上斜方肌肌筋膜触发点,随机干预研究.pdfVIP

Myburgh et al. Chiropractic Manual Therapies 2012, 20:36 /content/20/1/36 CHIROPRACTIC MANUAL THERAPIES RESEARCH Open Access Skeletal muscle contractility, self-reported pain and tissue sensitivity in females with neck/ shoulder pain and upper Trapezius myofascial trigger points– a randomized intervention study Corrie Myburgh1,2*, Jan Hartvigsen1,2, Per Aagaard1 and Anders Holsgaard-Larsen3 Abstract Background: In relation to Myofascial Triggerpoints (MFTrPs) of the upper Trapezius, this study explored muscle contractility characteristics, the occurrence of post-intervention muscle soreness and the effect of dry needling on muscle contractile characteristics and clinical outcomes. Methods: Seventy-seven female office workers (25-46yrs) with and without neck/shoulder pain were observed with respect to self-reported pain (NRS-101), pressure-pain threshold (PPT), maximum voluntary contraction (Fmax) and rate of force development (RFD) at baseline (pre-intervention), immediately post-intervention and 48 hours post-intervention. Symptomatic and asymptomatic participant groups were each randomized into two treatment sub-groups (superficial (SDN) and deep dry needling (DDN)) after baseline testing. At 48 hours post-intervention participants were asked whether delayed onset muscle soreness (DOMS) and/or post-needling soreness had developed. Results: Muscle contractile characteristics did not differ between groups at baseline. Forty-six individuals developed muscle soreness (39 from mechanical testing and seven from needling). No inter-group differences were observed post-intervention for Fmax or RFD for the four sub-groups. Over the observation period, symptomatic participants reported less pain from both SDN (p= 0.003) and DDN (p=0.011). Howev