The Effects of Proprioceptive Neuromuscular Facilitation and Static Stretching Performed at Various Intensities on Hamstring Flexibility

Lim, Wantae

doi:10.12674/ptk.2020.27.1.30

Cited by 5 publications

(1 citation statement)

References 47 publications

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“…Various studies have demonstrated the effects of PNF stretching on flexibility with different contraction intensities [3][4][5]. However, previous research provided torque or force values in real time, allowing subjects to identify their contrac-tion intensity values.…”

Section: Introductionmentioning

confidence: 99%

Comparison of contraction intensity and perceived intensity between dominant and non-dominant leg in sedentary adults

Lim¹

2023

Physiother Quart.

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Introduction. Accurate measurement of isometric contraction intensity is a prerequisite for establishing an exercise program and developing a rehabilitation plan. despite numerous studies performed previously, there is no research on sedentary populations susceptible to injury during exercise. Additionally, although dominant and non-dominant legs showed differences in muscle properties, the legs were not separately investigated. The purposes of this study were to compare the contraction intensity with target intensity and with perceived intensity across 3 different target intensities in sedentary adults and examine the difference between the dominant and non-dominant leg. Methods. Voluntary isometric contractions were performed with resistance provided by a sling rope and measured with a strain gauge during hip extension. First, maximum voluntary contraction (MVC) was executed; subsequently, submaximal contractions at target intensities (75%, 50%, and 25% of MVC) were randomly performed. Perceived intensity was measured at each target intensity. Results. Hip extension forces were significantly different across the 3 intensities (p < 0.001), with no significant difference between target intensity and contraction intensity or between perceived intensity and contraction intensity. There was no significant difference between the dominant and non-dominant leg. Bland-Altman analysis of the agreement between perceived and contraction intensities revealed a proportional bias for the values within each target intensity (mean bias: -1.15%, standard deviation of bias: 20.96). Conclusions. Sedentary subjects were able to distinguish 3 different contraction intensities. Perceived intensity could statistically significantly predict contraction intensity. However, clinicians should note that under-or overestimation can occur regardless of the level of target intensity.

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Section: Introductionmentioning

confidence: 99%

Comparison of contraction intensity and perceived intensity between dominant and non-dominant leg in sedentary adults

Lim¹

2023

Physiother Quart.

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Difference in Perceived Pain Intensity Depending on the Order of Submaximal Isometric Contractions Performed at Different Intensities

Lim

2021

Türk Fizyoterapi Ve Rehabilitasyon Dergisi

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Purpose: Previous studies that examined pain after submaximal isometric contractions at different intensities are limited in that they used different intensities randomly. The present study aimed to examine the change in pain depending on the order of submaximal isometric contractions performed at two different intensities and inter-and intra-individual differences in pain responses.Methods: Twenty-nine volunteers participated (mean age=22.10±1.60 years) to the study. Hamstring flexibility was measured in the supine position. Maximal voluntary contraction (MVC) was measured during hip extension. Submaximal contractions were performed at two different target intensities: 25% and 75% of MVC. Visual Analogue Scale (VAS) was used to measure the pain after submaximal contractions. Group A (n=15) performed submaximal contraction in 25% to 75% of MVC in the 1st period and 75% to 25% of MVC in the 2nd period. In Group B (n=14), the submaximal contraction was performed in each period in the opposite order of Group A.Results: There was a significant decrease in pain in Group B during the 2nd period (p<0.05). The VAS at 75% of the MVC showed a significant decrease at 25% of the MVC (p=0.011). Correlations were observed between flexibility and 1st-period VAS score (p=0.048) and 2nd-period VAS score (p=0.036) and between the VAS scores in the 1st and 2nd periods (p<0.001). Conclusion:Pain intensity could be perceived differently depending on the order of sequential application, even when the intensities are identical, and might be more clinically useful in the analysis of intra-individual comparisons.

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Influence of successive active knee extension tests on hamstring flexibility

Lim¹

2021

JKPTS

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The Effects of Proprioceptive Neuromuscular Facilitation and Static Stretching Performed at Various Intensities on Hamstring Flexibility

Cited by 5 publications

References 47 publications

Comparison of contraction intensity and perceived intensity between dominant and non-dominant leg in sedentary adults

Comparison of contraction intensity and perceived intensity between dominant and non-dominant leg in sedentary adults

Difference in Perceived Pain Intensity Depending on the Order of Submaximal Isometric Contractions Performed at Different Intensities

Influence of successive active knee extension tests on hamstring flexibility

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