Objective To assess the effect of pelvic patterns of proprioceptive neuromuscular facilitation (PNF‐concept) on pelvic floor muscles (PFM) recruitment, as well as the electromyographic activity of muscles synergic to the pelvic floor in healthy women. Methods Observational study conducted with 31 women aged between 18 and 35 years, with mean age of 23.3 ± 3.2 (22.1–24.4). PFM activity was monitored by surface electromyography during the combination of isotonics technique of four pelvic patterns of PNF‐concept (i.e., anterior elevation, posterior depression, anterior depression, and posterior elevation). The electromyographic signal was analyzed using root mean square amplitude. Two‐way repeated measures analysis of variance was performed to analyze differences in PFM activity between types of contraction (i.e., concentric, isometric, and eccentric) and the four pelvic patterns. Results PFM activity did not differ among the four pelvic pattens. However, PFM activity was significantly different between the combination of isotonics technique and baseline, F(1.6, 48.2) = 71.5; p < 0.000, with a large effect size (partial ƞ² = 0.705). Concentric (22.4 µV ± 1.1), isometric (17.3 µV ± 0.6), and eccentric (15 µV ± 0.5) contractions of combination of isotonics technique increased PFM activity compared with baseline (10.8 µV ± 0.4) in all pelvic patterns. By analyzing the electromyographic activity of the muscles synergistic to the pelvic floor, there is effect of the interaction of the type of contraction, the pelvic pattern of the PNF concept, and the synergistic muscles on the myoelectric activity of the external anal sphincter, F(3.2, 96.5) = 5.6; p < 0.000, with a large magnitude of effect (partial ƞ² = 0.15). In the anterior elevation pattern, the muscles synergistic to the pelvic floor present synergy in phase with the PFM, and in the posterior patterns there was a decrease in the activity level of all synergistic muscles, without changing the activity level of the PFM. Conclusion PFM activity did not differ among the four pelvic patterns of PNF‐concept. Nonetheless, the combination of isotonics technique showed a significant effect on PFM compared with baseline, with greater PFM activity during concentric contraction. Pelvic patterns of PNF‐concept may be used to increase PFM recruitment in young healthy women.
Objective: To evaluate the electromyographic response of the transversus abdominis/internal oblique muscles (TrA/IO) during the execution of the four pelvic patterns of proprioceptive neuromuscular facilitation (PNF). Methods: Cross-sectional study. Were evaluated 21 women aged 18-38 years. The right TrA/IO complex, ipsilateral to the execution of a PNF combination of isotonics technique was monitored by surface electromyography. Three repetitions were performed with two-minute intervals between them in the four PNF pelvic patterns: anterior elevation, posterior depression, anterior depression, and posterior elevation. For the analysis of the electromyographic signal, a period of 500ms adjusted to the central value was extracted and the Root Mean Square amplitude was analyzed. Descriptive statistics and ANOVA test was used with a 95% confidence interval. Results: There was a higher TrA/IO activity in the concentric phase in the anterior elevation pattern (36.2 ± 32.3%) when compared to previous depression (19.5 μV ± 12.9), posterior elevation (16.1 μV ± 8.7), posterior depression 14.6μV ± 5.9). In addition, in the antero-elevation there is greater activation of the TrA/IO muscle complex when compared to the other patterns (p <0.01). Conclusion: The higher EMG response of the TrA/IO found in the anterior elevation pattern reveals its usefulness for clinical use.
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