Immediate effect of stabilization exercises versus conventional exercises of the trunk on dynamic balance among trained soccer players

Background: Trunk stability is key in controlling body balance and movements. Trunk Stabilization Exercises (TSE) and Conventional Trunk Exercises (CTE) are performed to improve dynamic balance. The authors have previously reported that dynamic balance was improved by a 12-week and 6-week TSE program. However, there is a dearth of research on its immediate effect on dynamic balance in trained soccer players. Objective: To compare the immediate effeect of TSE with that of CTE on dynamic balance in trained soccer players. Methods: Forty-eight male soccer players (24.60 ffi 1.38 years) participated in this crossover study, wherein each participant took part in three exercise sessions: TSE, CTE, and No Exercise control (NE), each consisting of three steps: pre-test, intervention and post-test, with an interval of one week between each exercise condition. To assess dynamic balance, the Y Balance Test-Lower Quarter (YBT-LQ) score in the anterior, posteromedial, and posterolateral directions was measured before and 5 minutes after each intervention. Results: The YBT-LQ composite score was significantly improved after TSE (0.51) as compared to CTE (0.22) and NE (0.04) (p < 0.05). Furthermore, in TSE and CTE conditions, YBT-LQ scores of the posterolateral and posteromedial directions significantly improved at the post-test (p < 0.05). Conclusions: Both TSE and CTE are effective in immediately improving dynamic balance; however, TSE showed greater improvement as compared to the latter. Immediate improvements in the posteromedial and posterolateral directions of the YBT-LQ were demonstrated after performing the TSE and CTE.

Evaluation of a Chair-Mounted Passive Trunk Orthosis: A Pilot Study on Able-Bodied Subjects

Trunk stability is important for adequate arm function due to their kinematic linkage. People with Duchenne muscular dystrophy (DMD) can benefit from trunk-assistive devices for seated daily activities, but existing devices limit trunk movement to forward bending. We developed a new trunk orthosis that has spring and pulley design. This study evaluated orthosis performance with 40 able-bodied subjects under with and without orthosis condition in 20 seated tasks for trunk rotation, forward bending, and side bending movements. Subjects adopted static posture in specific trunk orientation while their muscle activity was recorded. They also rated the subjective scales of perceived exertion and usability. A percent change in muscle activity for each task, due to orthosis use, is reported. Significant muscle activity reductions up to 31% and 65% were observed in lumbar and thoracic erector spinae muscles, respectively. Using three-way ANOVA, we found these reductions to be specific to the task direction and the choice of upper limb that is used to perform the asymmetric tasks. A total of 70% participants reported acceptable usability and ~1-point increase in exertion was found for maximum voluntary reaching with the orthosis. The outcomes of this study are promising, though tested on able-bodied subjects. Hence, orthosis mounted on wheelchairs should be further evaluated on DMD patients.

Differences in Gait Stability and Acceleration Characteristics Between Healthy Young and Older Females

Our aim was to evaluate differences in gait acceleration intensity, variability, and stability of feet and trunk between older females (OF) and young females (YF) using inertial sensors. Twenty OF (mean age 68.4, SD 4.1 years) and 18 YF (mean age 22.3, SD 1.7 years) were asked to walk straight for 100 meters at their preferred speed, while wearing inertial sensors on their heels and lower back. We calculated spatiotemporal measures, foot and trunk acceleration characteristics, their variability, and trunk stability using the local divergence exponent (LDE). Two-way ANOVA (such as the factors foot and age), Student's t-test and Mann–Whitney U test were used to compare statistical differences of measures between groups. Cohen's d effects were calculated for each variable. Foot maximum vertical (VT) acceleration and amplitude, trunk-foot VT acceleration attenuation, and their variability were significantly smaller in OF than in YF. In contrast, trunk mediolateral (ML) acceleration amplitude, maximum VT acceleration, amplitude, and their variability were significantly larger in OF than in YF. Moreover, OF showed lower stability (i.e., higher LDE values) in ML acceleration, ML, and VT angular velocity of the trunk. Even though we measured healthy OF, these participants showed lower VT foot accelerations with higher VT trunk acceleration, lower trunk-foot VT acceleration attenuation, less gait stability, and more variability of the trunk, and hence, were more likely to fall. These findings suggest that instrumented gait measurements may help for early detection of changes or impairments in gait performance, even before this can be observed by clinical eye or gait speed.

PHYSICAL THERAPISTS’ PERCEPTIONS OF ADOLESCENT IDIOPATHIC SCOLIOSIS TREATMENT

Background: Few studies have demonstrated the benefit of physical therapy in the treatment of adolescent idiopathic scoliosis (AIS), alone or in conjunction with bracing or surgery. To our knowledge, there is no consensus in pediatric physical therapists who treat AIS patients. Purpose: To identify the optimal physical therapy practices for AIS including; weekly frequency, session length, treatment duration, clinical interventions, therapeutic goal-setting, and outcome measures from pediatric physical therapists’ perspectives. Methods: A 40-question validated survey, The Analysis of the Schroth Method in Adjunct to Physical Therapy Services for Treatment of AIS, was distributed to pediatric physical therapists across the country via the Academy of Pediatric Physical Therapy electronic newsletter and via dissemination by the Injury Prevention Research Interest Group from Pediatric Research in Sport Medicine. REDCap was used to collect and organize responses. The responses were analyzed by a descriptive statistics using percentages (%). Results: Sixty-five responses were obtained. The majority of physical therapists, 78.5%, were Doctors of Physical Therapy (DPT), treating 1-5 AIS patients a week (69.2%), and 18.8% had Schroth certification. Preferred treatment frequency was twice a week (41.5%) for a duration of 60 minutes (53.8%), over the course of 3-5 months (44.6%). The top three common clinical interventions were; core and trunk stability enhancement (90.8%), abdominal strengthening (83.1%) and postural correction (80.0%). The three most common therapeutic goal-setting parameters were activity based (78.5%), quality of life measure based (56.9%), and therapy participation based (50.8%). Additionally, for outcome measures, patient reported outcome was the most common objective measurement (78.5%), followed by pain (63.1%), manual muscle testing (46.2%), range of motion (44.6%), cobb angle (27.7%), scoliometer readings (26.2%) and Adam’s forward bend test (10.8%). Therapists often monitored progress with completed surveys by patients. However, patients’ ability to return to activity was the most common marker of improvement (72.3%). Patient’s scoliosis was often being treated in another manner aside from PT (46.2%), and many patients had medical conditions in addition to scoliosis (52.3%). Conclusion: According to our data, pediatric physical therapists believe that patients with AIS can benefit from physical therapy treatments addressing core and trunk stability, abdominal strengthening, and postural correction. Ideal treatment sessions would occur twice a week for 60 minutes over a period of 3-5 months. Objective measurements can be monitored to ensure improvements in quality of life, pain, strength, range of motion and curvature of the patient’s spine. Acknowledgements The Injury Prevention Research Interest Group from Pediatric Research in Sports Medicine and Suzanne M. McCahan, PhD