Karen Obara

Comparing the Pilates method with no exercise or lumbar stabilization for pain and functionality in patients with chronic low back pain: Systematic review and meta-analysis

Objective: To perform a systematic review with meta-analyses that evaluates the effectiveness of the Pilates method on the pain and functionality outcome in adults with non-specific chronic low back pain. Data sources: The search was performed in the following databases: Medline, Embase, AMED, Cinahl, Lilacs, Scielo, SportDiscus, ProQuest, Web of Science, PEDro, Academic Search Premier and the Cochrane Central Register of Controlled Trials from 1950 to 2011; the following keywords were used: ‘Pilates’, ‘Pilates-based’, ‘back exercises’, ‘exercise therapy’, ‘low back pain’, ‘back pain’ and ‘backache.’ Review methods: The inclusion criteria were studies that assessed the effects of the Pilates method on patients with chronic low back pain. Results: Five studies met the inclusion criteria. The total number of patients was 71 in the Pilates group and 68 in the control group. Pilates exercise did not improve functionality (standardized mean difference (SMD = –1.34; 95% confidence interval (CI) −2.80, 0.11; P = 0.07) or pain between Pilates and control groups (SMD = –1.99; 95% CI −4.35, 0.37; P = 0.10). Pilates and lumbar stabilization exercises presented no significant difference in functionality (mean difference (MD) = –0.31; 95% CI −1.02, 0.40; P = 0.39) or pain (MD = –0.31; 95% CI −1.02, 0.40; P = 0.39). Conclusion: The Pilates method did not improve functionality and pain in patients who have low back pain when compared with control and lumbar stabilization exercise groups.

Facial exercise therapy for facial palsy: systematic review and meta-analysis

The effectiveness of facial exercises therapy for facial palsy has been debated in systematic reviews but its effects are still not totally explained. Objective: To perform a systematic review with meta-analysis to evaluate the effects of facial exercise therapy for facial palsy. Data sources: A search was performed in the following databases: Cochrane Controlled Trials Register Library, Cochrane Disease Group Trials Register, MEDLINE, EMBASE, LILACS, PEDro, Scielo and DARE from 1966 to 2010; the following keywords were used: ‘idiopathic facial palsy’, ‘facial paralysis’, ‘Bell’s palsy’, ‘physical therapy’, ‘exercise movement techniques’, ‘facial exercises’, ‘mime therapy’ ‘facial expression’, ‘massage’ and ‘randomized controlled trials’. Review methods: The inclusion criteria were studies with facial exercises, associated or not with mirror biofeedback, to treat facial palsy. Results: One hundred and thirty-two studies were found but only six met the inclusion criteria. All the studies were evaluated by two independent reviewers, following the recommendations of Cochrane Collaboration Handbook for assessment of risk of bias (kappa coefficient = 0.8). Only one study presented sufficient data to perform the meta-analysis, and significant improvements in functionality was found for the experimental group (standardized mean difference (SMD) = 13.90; 95% confidence interval (CI) 4.31, 23.49; P = 0.005). Conclusion: Facial exercise therapy is effective for facial palsy for the outcome functionality.

Electromyographic Effect of Mat Pilates Exercise on the Back Muscle Activity of Healthy Adult Females

OBJECTIVE The purpose of this study was to examine back muscle activity during 3 traditional mat Pilates exercises. METHODS Eleven healthy female volunteers, aged between 18 and 30 years, participated in this cross-sectional study. Surface electromyography (sEMG) of lumbar extensor muscles was recorded simultaneously with kinematics data to identify the phases of movement. Three mat Pilates back exercises were compared: (1) swimming, (2) single leg kick with static prone back extension, and (3) double leg kick. Root mean square values of each muscle were recorded with 2 pairs of surface electrodes placed bilaterally on one lumbar extensor muscle (at L5). During phases of each exercise, sEMG signals were identified by video analysis. Electrical muscle activation was normalized by the maximal voluntary isometric contraction and used to compare back muscle activity among exercises. A 2-way repeated measures analysis of variance was performed to assess the differences in activation level during the exercises. RESULTS The value of electrical muscle activity in the lumbar extensors ranged between 15% and 61% of MIVC for the 3 types of Pilates mat work exercise. The swimming exercise increased lumbar extensor activity (29% on average) in comparison to the other 2 Pilates conditions. Interestingly, the double leg kick exercise generated significantly more lumbar extensor activity (26% on average) than the single leg kick. CONCLUSIONS For this group of participants, the swimming exercise increased muscle activation relative to the other 2 exercise modes.

The Electromyographic Activity of the Multifidus Muscles During the Execution of Two Pilates Exercises—Swan Dive and Breast Stroke—for Healthy People

OBJECTIVE The purpose of this study was to compare the multifidus electromyographic activity in healthy women during the performance of the same Pilates exercise under 2 conditions. METHODS Sixteen healthy, active, female practitioners of Pilates (mean age, 24.3; SD, 3.1 years) were assessed through surface electromyography during 2 Pilates exercises (swan dive and breast stroke). Muscle activity during the experimental tasks was recorded with 1 pair of electrodes placed bilaterally on the multifidi. Data were normalized to maximal activity recorded during dynamic activity. RESULTS The mean of the maximal isometric voluntary contraction was 662.4 N (SD, 195). In the phase comparison, the multifidus was the most recruited on the concentric phase during both exercises, ball (P=.001) and reformer (P=.001). In the comparison between conditions, the reformer presented more activation on swan dive (P=.04) and breast stroke (P=.001). The percentages of muscle activation varied between 50% and 60%, and the greatest activation was made on the reformer condition. CONCLUSION The findings of this study show that Pilates exercises by healthy women, under different conditions, can cause changes to the multifidus muscle activation. The condition and the phase in which the muscle was more activated were the reformer and concentric phase, respectively, for both exercises. However, the results for the percentages of activation suggest that the intensity of recruitment may not be sufficient to strengthen muscle in healthy, trained subjects.

Pilates versus general exercise effectiveness on pain and functionality in non-specific chronic low back pain subjects

Low back pain (LBP) is one of the most common causes of disability, and the Pilates method has been associated with improvements in symptoms. The purpose of this study was to assess the effectiveness of the Pilates method, when compared to general exercises, on pain and functionality after eight weeks (16 sessions, 2×/week) and a follow-up of three months, in subjects with non-specific chronic low back pain (NSCLBP). A randomised controlled trial composed of 22 subjects was proposed. Subjects were allocated into two groups: the Pilates group (PG) (n = 11) and the general exercise group (GEG) (n = 11). The PG protocol was based on the Pilates method and the GEG performed exercises to manage NSCLBP. There were no differences between the groups. When analysed over time, the GEG demonstrated improvements in functionality between baseline and the end of treatment (P = .02; Cohensd¯ = 0.34) and baseline and follow-up (P = .04; Cohensd¯ = 0.31). There were no differences between the Pilates and general exercises with regard to pain and functionality in NSCLBP subjects but general exercises were better than Pilates for increasing functionality and flexibility.