Effect of neurofeedback training on psychological features and plantar pressure distribution symmetry in patients with patellofemoral pain: A ransdomized controlled trial

The influence of pain exacerbation on rear foot eversion and plantar pressure symmetry in women with patellofemoral pain: a cross sectional study

BACKGROUND

The patellofemoral joint (PFJ) stress as a primary mechanical stimulus in the patellofemoral pain (PFP) etiology is affected by plantar pressure symmetry. This study evaluated how pain exacerbation affects rear foot eversion and plantar pressure distribution symmetry.

METHOD

Sixty women with PFP participated in this study. Pain intensity, rear foot eversion, and plantar pressure were evaluated in the two conditions with and without pain exacerbation during double-leg squats. The MANOVA test was used to compare pain intensity, rear foot eversion, and plantar pressure symmetry between the two conditions. The Pearson correlation was used to evaluate the relationship between the pain intensity with the rear foot eversion and the plantar pressure symmetry.

RESULTS

The comparison between the two conditions showed a significant difference in pain intensity (P < 0.001, η2 = 0.623), rear foot eversion (P < 0.001, η2 = 0.485), plantar pressure distribution symmetry of the right-left foot (P < 0.001, η2 = 0.438), forefoot and rear-foot of the right foot (P < 0.001, η2 = 0.607), and forefoot and rear-foot of the left foot (P < 0.001, η2 = 0.548). An excellent correlation was observed between the pain intensity with rear foot eversion (P < 0.001, r = 0.835) and plantar pressure distribution symmetry of the right-left foot (P < 0.001, r = 0.812), forefoot and rear-foot of the right foot (P < 0.001, r = 0.834), and forefoot and rear-foot of the left foot (P < 0.001, r = 0.811).

CONCLUSIONS

After the pain exacerbation, the rear foot eversion was greater, and plantar pressure asymmetrical was observed, which can help in the development of PFP severity.

The effect of cognitive functional therapy on the plantar pressure distribution symmetry in patients with chronic non-specific low back pain: A randomized controlled trial

OBJECTIVE

This study aimed to evaluate the effect of Cognitive functional therapy (CFT) on plantar pressure distribution symmetry in chronic non-specific low back pain (CNSLBP) patients.

METHOD

forty females with NSCLBP (age range 30-50 years) were recruited for clinical trials. They were randomly divided into experimental and control groups (Each group had 20 patients). The patients in the experimental group received CFT for 8 weeks. The primary outcome was psychological variables inclusive of pain, kinesiophobia and disability. The secondary outcome was plantar pressure distribution symmetry which assessment in standing condition. The Covariance statistical method was used for data analysis.

RESULTS

The results of covariance analysis for primary outcome showed a significant difference (p < 0.05) with a reduction of 52 % in pain (p = 0.001), 12 % in kinesiophobia (p = 0.001) and 41% in disability (p = 0.001). Also, the results of covariance analysis for secondary outcome showed a significant difference in plantar pressure distribution symmetry of inter-limbs foot (p = 0.007), forward and backward in the right foot (p = 0.002) and forward and backward in the left foot (p = 0.001).

CONCLUSION

CFT reduces of pain, kinesiophobia and disability. In addition significant difference in the plantar pressure distribution symmetry was observed, which it is argued the plantar pressure asymmetric can be influenced by psychological factors.

Effects of pain exacerbation on postural control in women with patellofemoral pain during single leg squat: a cross-sectional study

BACKGROUND

The center of pressure (COP) excursion parameters are recognized as risk factors for the etiology and development of patellofemoral pain (PFP). The purpose of the present study measures the effect of pain exacerbation on COP excursion, and the correlation between pain intensity and COP excursion in women with PFP during single leg squat (SLS).

METHODS

Sixty patients with PFP participated in this cross-sectional study. The outcome measures were included pain intensity and COP excursion which evaluated in pre and post pain exacerbation during SLS. The COP parameters were evaluated during single leg squat in 60° of knee flexion. A paired t-test and MANOVA was used to compare pain intensity and COP excursion between the two conditions, respectively. Furthermore, A Pearson's correlation matrix was used to examine the relationship between pain intensity with COP excursion.

RESULTS

Statistical analysis showed that pain intensity (t = - 16.655, p < 0.001) and COP excursion (Wilks' Lambda = 0.225, p < 0.001) with medium effect size increased after PFJ loading. In addition, an excellent positive correlation was observed between increased in pain intensity and COP excursion (P < 0.001, r > 0.80).

CONCLUSION

After PFJ loading, women with PFP presented increases in the pain intensity, COP excursions, and sway velocity. In addition, there was an association between the increase in pain intensity and COP excursions. Clinicians aiming to improve postural control of patients with PFP could use kinesio taping as a short-term intervention and balance training to improvements in postural control at medium and long-term. Furthermore, emphasizing psychological factors to reducing kinesiophobia can be useful to restoring proper movement pattern, reducing pain and improving symptoms.