Effects of exercise therapy on pain and disability in patients with non-specific neck pain: A systematic review and meta-analysis.

BACKGROUND: Existing systematic reviews and meta-analyses have only focused on patients with chronic non-specific neck pain (NNP), analyzing exercise therapy (ET) only as therapeutic exercise. Therefore, it is necessary to comprehensively review the effects of ET through a meta-analysis comprising a wide range of ETs that are not limited to therapeutic exercise. OBJECTIVES: This study aimed to investigate the effects of ET on pain and disability in patients with NNP. DESIGN: Systematic review and meta-analysis. METHOD: The studies selected for this study were based on the PICO-SD tool as follows: P (patient)-acute, subacute, and chronic NNP patents, I (intervention)-ET, C (comparison)-control and other therapy groups, O (outcome)-pain and disability, and SD (study design)-randomized controlled trial. RESULTS: Twenty-one studies were included. The effects of ET on pain and disability in patients with chronic NNP were significantly different (pain: SMD -1.47, 95% CI: -1.89 to -1.06, I2: 94%; disability: SMD -1.79, 95% CI: -2.31 to -1.27, I2: 94%). The effects of ET on pain (ET vs control: SMD: -1.60, 95% CI: -2.09 to -1.11, I2: 94%; ET vs sham therapy: SMD: -8.75, 95% CI: -10.71 to -6.79) and disability (ET vs control: SMD: -2.16, 95% CI: -2.80 to -1.52, I2: 94%; ET vs sham therapy: SMD: -1.73, 95% CI: -2.42 to -1.05) in NNP patients were significantly different. CONCLUSIONS: This study verified the efficacy of ET in improving pain and disability in patients with chronic NNP. However, evidence supporting the efficacy of ET in patients with acute and subacute NNP is still lacking.

Effects of smart phone use on lower limb joint angle and dynamic balance during gait.

BACKGROUND: Cognitive tasks influence gait by reducing balancing abilities. Diverse studies to date have examined dual-tasking and gait. OBJECTIVE: This study aimed to determine the influences of smart phone use while walking on lower limb joint angle and dynamic balancing ability. METHODS: Thirty healthy subjects were voluntarily recruited from the university population. All subjects were required to perform the tasks under three conditions: not using a smart phone, having a conversation by phone, and playing a smart phone game. Lower limb joint angle and dynamic balance ability related to smart phone use during gait were measured. Motion analysis was used to measure lower limb joint angle changes during gait, while balance measuring equipment was used to measure the dynamic balancing ability. RESULTS: In the stability limit test to measure the changes in dynamic balancing abilities, significant differences were found among the different smart phone use conditions. CONCLUSIONS: Smart phone use during movements that are required for balance requires special attention, and this study provides important basic data for follow-up studies.

Effects of mechanical horseback riding velocity on spinal alignment in young adults.

[Purpose] This study aimed to determine if the velocity of mechanical horseback-riding training can improve spinal alignment in young adults. [Subjects and Methods] Thirty-six subjects were enrolled in this study. The subjects were randomly allocated into high-, moderate-, and low-velocity mechanical horseback-riding training groups. All participants completed one 20-minute session per day, 3 days per week, for 6 weeks. The evaluation was performed before and 6 weeks after the training intervention. The spinal alignment was measured by a Formetric III device. The measurement items were kyphotic angle, lordotic angle, trunk inclination, pelvic torsion, pelvic rotation, and lateral deviation. The data were analyzed using analysis of covariance to determine the statistical significance. [Results] The kyphotic angle and trunk inclination were significantly different among the groups. The kyphotic angles of the high- and moderate-velocity groups were significantly lower than that of the low-velocity group after the intervention. The trunk inclination of the high-velocity group was significantly lower than that of the low-velocity group after intervention. [Conclusion] Higher-velocity mechanical horseback-riding training is more effective than lower-velocity mechanical horseback-riding training for improving spinal alignment.

Analysis of balance ability dependent on the angle of the knee joint in females in their 20s.

The aim of this study was to investigate how balance ability according to angle of the knee joint changes in young female adults wearing a knee orthosis. [Methods] This study was conducted with 11 healthy female adults. The subjects used a knee brace that could be set to angles of 0°, 15°, and 30° of knee flexion. The ability to balance was evaluated by balance assessment. A total of four postures were used for measurements: a forward-facing posture with the eyes open on a stable surface (NO), a forward-facing posture with the eyes closed on a stable surface (NC), a forward-facing posture with the eyes open on an unstable surface (PO), and a forward-facing posture with the eyes closed on an unstable surface (PC). [Results] Regarding the weight distribution index and stability index on a stable surface, there was no interaction according to whether there was visual deprivation or not or according to knee flexion angle. Furthermore, the stability index on an unstable surface showed no interaction according to whether there was visual deprivation or not or according to knee flexion angle. But the WDI on a stable surface showed no interaction according to whether there was visual deprivation or not or according to knee flexion angle. [Conclusion] There were significant differences in the knee extension range of motion of normal elderly people and knee osteoarthritis, and the quadriceps femoris played an important role in knee function in individuals with knee osteoarthritis.