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Objective This study aimed to evaluate the effects of kinesiology tape, anesthesia, and kinesiology tape along with anesthesia, on motor neuron excitability. Participants Participants included 20 healthy men aged 20–35 years, who were examined over 5 sessions. Intervention The five experimental sessions included: control without applying the kinesiology tape or Eutectic Mixture of Local Anesthetics (EMLA); treatment only with EMLA; only kinesiology tape application; only sham tape application; and treatment with kinesiology tape and EMLA. Main outcome measures The H-reflex recruitment curve of the soleus and lateral gastrocnemius was recorded by a blinded assessor in the 5 separate sessions randomly assigned with 48 h washout periods. The major H-reflex parameters include: the H max /M max ratio, the H-reflex threshold stimulation intensity (H th ), the intensity of maximum H-reflex (Intensity Hmax ), the H-reflex ascending slope (H slp ), and the H-reflex ascending slope fixed into the first three points (first H slp ). Results The H-reflex parameters (H slope, first H slp , H th , and Intensity Hmax ) were facilitated by application of the kinesiology tape with and without EMLA; however, EMLA inhibited the H-reflex parameters (H max /M max ratio, H slp , first H slp , and H th ) in both the soleus and lateral gastrocnemius. The sham tape did not alter the H-reflex recruitment curve parameters. The statistical model revealed a significant difference between the kinesiology tape and the sham tape and control sessions, between kinesiology tape–EMLA and EMLA, and between kinesiology tape–EMLA and control session. Conclusions Results suggest that the kinesiology tape facilitates the muscle activity and the underlying mechanism on the gastrosoleus motor neuron pool involves the cutaneous receptors.

The first purpose was to investigate the trunk muscle endurance, the second aim was to evaluate the trunk–pelvis kinematics during gait, and the third was to evaluate the relationship between trunk–pelvis kinematics and the trunk muscle endurance. Thirty participants (15 nonspecific chronic low back pain [NCLBP] and 15 healthy) were included. The authors first assessed trunk muscle endurance on endurance testing protocols. The authors next measured the trunk–pelvis kinematics during gait using a 3-dimensional motion capture system. Angular displacement, waveform pattern (CVp), and offset variability (CVo) were also examined. Statistical analysis revealed a significant difference in (1) the trunk muscle endurance and (2) sagittal, frontal, and transverse planes CVp between groups (P p (r = .521, P = .03) and transverse planes CVp (r = .442, P = .05). However, a significant moderate correlation was observed between prone double straight-leg raise and sagittal plane CVp (r = .528, P = .03) and transverse plane CVp (r = .678, P = .001). The relationship between (1) lower trunk extensor endurance with transverse and sagittal planes CVp and (2) lower abdominal muscle endurance with transverse and frontal planes CVp suggests that gait variability in these planes may result because of trunk muscle deconditioning accompanying NCLBP.

Objective The aim of this study was to examine the effect of Mulligan ankle taping on center of pressure (COP) parameters during performance of a functional upper limb task in patients with chronic ankle instability (CAI). Methods A clinical controlled trial study designed between 4 ankle conditions: untaped and taped, CAI and healthy subjects. Fifteen subjects with CAI and 15 healthy controls were asked to grasp an object at their waist level and release it above shoulder level in an oblique pattern during performance of single-leg stance balance test. All the subjects performed 3 trials of single-leg stance with eyes opened before and after Mulligan taping on a force plate during performance of functional upper limb task. The mean displacement (mdCOP), range of COP excursion (rangeCOP) and average speed of COP (velCOP) in anteroposterior (AP) and mediolateral (ML) directions were analysed for differences between groups. Results mdCOP and rangeCOP in AP direction were significantly increased (P= 0.04 and 0.03, respectively) in the CAI group. Mulligan taping significantly reduced velCOP in AP and ML directions (P= 0.02). Conclusion In CAI patients Mulligan ankle taping can improve postural control by decreasing velCOP, therefore Mulligan taping can have immediate positive effects on postural parameters and maintenance of dynamic postural control.

Objective This study aimed to evaluate lumbar lordosis during sit-to-stand (STS) and stand-to-sit (SIT) in individuals with and without chronic nonspecific low back pain (CNLBP). The second objective was to investigate sex-related differences in lumbar lordosis. Methods Twenty-six patients with CNLBP and 26 controls were recruited. Controls were matched with cases using a frequency matching method. Reflective markers were placed over the spinous process of T12, L3, S2, and the anterior and posterior superior iliac spines. The participants were instructed to stand up at a self-selected pace and maintain their normal upright standing posture for 3 seconds, and then sit down. Kinematic data were recorded at a sampling frequency of 100 Hz using a motion capture system. Lumbar lordosis angle was calculated from the intersection between the line joining T12 and L3, and the line joining L3 to S2. Results Lumbar lordosis was decreased in patients with CNLBP during STS and SIT compared with the asymptomatic group (mean difference = 2.68°-9.32°; P ≤ .005). Furthermore, no differences were seen in lumbar lordosis at starting position between CNLBP and asymptomatic groups during STS and SIT (mean difference = 2.68°-3.75°; P ≥ .099). Interestingly, the magnitude of the effect size suggested that the difference in lumbar lordosis values between female and male participants was relatively large (Cohen's d = -1.81 to 0.20). Conclusion Decreased lumbar lordosis in patients with CNLBP during STS and SIT could be considered as an important point during rehabilitation. Moreover, the present study showed that there is a sex-related difference among women and men in lumbar lordosis during STS and SIT tasks.

Background and objectives: Neck pain is a disabling condition associated with pain and proprioceptive disturbances. There is limited evidence on the efficacy of treatments for chronic neck pain (CNP). The aim of this study is to conduct a randomized, controlled trial to compare the effect of galvanic vestibular stimulation (GVS) with that of cervical proprioception training (CPT) on pain and proprioception acuity in patients with chronic neck pain. Subjects and methods: Forty-eight patients with CNP enrolled in this prospective, single-blind, randomized, controlled study will be randomly allocated to one of four groups: GVS, CPT, GVS + CPT, and control. The GVS group will receive galvanic stimulation, three sessions per week, for 6 weeks. The CPT group will perform proprioceptive exercises daily for 6 weeks. The GVS + CPT group will receive both interventions. The control group will have no intervention for 6 weeks, but 6 weeks later, they will receive physical therapy. In addition, 12 healthy subjects will be recruited. This study protocol has been approved by the Ethics Review Board of Iran University of Medical Sciences, with permission number IR.IUMS.REC 1395.9211342210 on August 8, 2016. Patient recruitment began in October 2016 and ended in October 2018. Data analysis will be performed in March 2019 and the study will be completed in May 2019. Outcome measures: The primary outcome measures will be intensity of pain, pressure pain threshold, and joint position error. The secondary outcome measures will be disability and health-related quality of life. Outcomes will be assessed at baseline and at the end of sessions 1 and 18. Discussion: Findings from the trial are expected to help assess the effectiveness of GVS, compared with CPT in patients with CNP. If this protocol is proven to be effective, it can be implemented in a clinical setting to manage chronic pain in patients with CNP. We expect this study to offer information about the positive effects of GVS and CPT. Findings from this study will be helpful in progressing GVS from science to practice and in managing disturbances in CNP. Trial registration: The study was registered at the Iranian Registry of Clinical Trials on September 26, 2016 (IRCT2016060121459N2).