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https://www.readbyqxmd.com/read/29327828/the-acute-effects-of-stretching-with-vibration-on-dynamic-flexibility-in-young-female-gymnasts
#1
Aaron W Johnson, Caisa N Warcup, Matthew K Seeley, Dennis Eggett, Jeffery B Feland
BACKGROUND: While stretching with vibration has been shown to improve static flexibility; the effect of stretching with vibration on dynamic flexibility is not well known. The purpose of this study was to examine the effectiveness of stretching with vibration on acute dynamic flexibility and jump height in novice and advanced competitive female gymnasts during a split jump. METHODS: Female gymnast (n=27, age: 11.5 ± 1.7 years, Junior Olympic levels 5-10) participated in this cross-over study...
January 10, 2018: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29315452/a-case-for-the-brace-a-critical-comprehensive-and-up-to-date-review-of-static-progressive-stretch-dynamic-and-turnbuckle-braces-for-the-management-of-elbow-knee-and-shoulder-pathology
#2
Nipun Sodhi, Benjamin Yao, Anton Khlopas, Iyooh U Davidson, Assem A Sultan, Linsen T Samuel, Suela Lamaj, Jared M Newman, Robert Pivec, Kristy A Fisher, Benjamin Gaal, Michael A Mont
BACKGROUND: Non-operative management of the elbow, shoulder, and knee typically includes braces, such as the: static progressive stretch (SPS), turnbuckle, and dynamic. However, a paucity of literature exists comparing these three bracing modalities. Therefore, the purpose of this study was to evaluate the current literature on the various bracing modalities for physicians and patients managing elbow, shoulder, or knee joint complications. Specifically, we compared the use of 1) static progressive stretch, 2) dynamic, and 3) turnbuckle braces for the a) elbow, b) knee, and c) shoulder...
December 22, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/29300214/no-effect-of-muscle-stretching-within-a-full-dynamic-warm-up-on-athletic-performance
#3
Anthony J Blazevich, Nicholas D Gill, Thue Kvorning, Anthony D Kay, Alvin Goh, Bradley Hilton, Eric J Drinkwater, David G Behm
PURPOSE: To examine the effects of static and dynamic stretching routines performed as part of a comprehensive warm-up on flexibility and sprint running, jumping and change of direction tests in team sport athletes. METHODS: A randomized, controlled, cross-over study design with experimenter blinding was conducted. On separate days, 20 male team sport athletes completed a comprehensive warm-up routine. After a low-intensity warm-up a 5-s static stretch (5S), 30-s static stretch (30S; 3×10-s stretches), 5-repetition (per muscle group) dynamic stretch (DYN) or no stretch (NS) protocol was completed; stretches were done on 7 lower body and 2 upper body regions...
January 4, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29286882/acute-effects-of-static-stretching-on-passive-stiffness-and-postural-balance-in-healthy-elderly-men
#4
Ty B Palmer, Chinonye C Agu-Udemba, Bailey M Palmer
OBJECTIVES: This study aimed to examine the acute effects of straight-leg raise (SLR) static stretching on passive stiffness and postural balance in healthy, elderly men. An additional aim of this study was to examine the relationships between stiffness and balance at baseline (prior to stretching) and the relationships between the stretch-induced changes in these variables. METHODS: Eleven elderly men (age = 69 ± 6 years; height = 177 ± 7 cm; mass = 83 ± 13 kg) underwent postural balance and passive stiffness assessments before and after: 1) a stretching treatment consisting of four, 15-s SLR static stretches performed by the primary investigator and 2) a control treatment consisting of no static stretching...
December 30, 2017: Physician and Sportsmedicine
https://www.readbyqxmd.com/read/29280208/medial-gastrocnemius-muscle-stiffness-cannot-explain-the-increased-ankle-joint-range-of-motion-following-passive-stretching-in-children-with-cerebral-palsy
#5
Barbara M Kalkman, Lynn Bar-On, Francesco Cenni, Constantinos N Maganaris, Alfie Bass, Gill Holmes, Kaat Desloovere, Gabor J Barton, Thomas D O'Brien
Stretching is often used to increase/maintain joint range of motion (ROM) in children with cerebral palsy (CP) but the effectiveness of these interventions is limited. Therefore, this study aimed to determine the acute changes in muscle-tendon lengthening properties that contribute to increased ROM after a bout of stretching in children with CP. Eleven children with spastic CP (age:12.1(3)y, 5/6 hemiplegia/diplegia, 7/4 GMFCS level I/II) participated in this study. Each child received 3 sets of 5 × 20 s passive, manual static dorsiflexion stretches separated by 30 s rest, and 60 s rest between sets...
December 26, 2017: Experimental Physiology
https://www.readbyqxmd.com/read/29272937/structure-spectroscopy-and-dynamics-of-the-phenol-water-2-cluster-at-low-and-high-temperatures
#6
Nagaprasad Reddy Samala, Noam Agmon
Aqueous solutions are complex due to hydrogen bonding (HBing). While gas-phase clusters could provide clues on the solution behavior, most neutral clusters were studied at cryogenic temperatures. Recent results of Shimamori and Fujii provide the first IR spectrum of warm phenol-(H2O)2 clusters. To understand the temperature (T) effect, we have revisited the structure and spectroscopy of phenol-(H2O)2 at all T. While older quantum chemistry work concluded that the cyclic isomers are the most stable, the inclusion of dispersion interactions reveals that they are nearly isoenergetic with isomers forming π-HBs with the phenyl ring...
December 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/29248845/bioinspired-microneedle-insertion-for-deep-and-precise-skin-penetration-with-low-force-why-the-application-of-mechanophysical-stimuli-should-be-considered
#7
Jonghun Kim, Sungmin Park, Gyungmok Nam, Young Choi, Seungpyo Woo, Sang-Hee Yoon
A mosquito is known to precisely and easily insert its proboscis to the human skin by pressing down a labium and vibrating a fascicle bundle. Its advanced skin-piercing mechanisms indicate that skin resistance to the insertion of needle-like objects can be changed by the application of mechanophysical stimuli. Here, we characterize the effect of the application of mechanophysical stimuli on skin resistance to microneedle insertion to find clues for inserting a microneedle in a deep and precise fashion with low force...
December 7, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29243066/serum-glucocorticoid-regulated-kinase-1-contributes-to-mechanical-stretch-induced-inflammatory-responses-in-cardiac-fibroblasts
#8
Wenqiang Gan, Tiegang Li, Jingyuan Ren, Chenghe Li, Ziliang Liu, Min Yang
Excessive mechanical stretch induces production of proinflammatory mediators in cardiac fibroblasts, which could act as inflammatory supporter cells in heart failure. Accumulation evidence and our previous studies suggest that serum-glucocorticoid-regulated kinase 1 (SGK1) contributes to cardiac remodeling and fibrosis, development of heart failure. However, the role and mechanism of SGK1 in mechanical stretch-induced inflammation of cardiac fibroblasts remain unclear. Here, cardiac fibroblasts isolated from wild-type (WT) and SGK1 knockout (SGK1-/-) mice were stimulated by 18% cyclic stretch, under static condition as the control...
December 14, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/29238262/effect-of-upper-extremity-strengthening-exercises-on-the-lumbar-strength-disability-and-pain-of-patients-with-chronic-low-back-pain-a-randomized-controlled-study
#9
Erdem Atalay, Bedrettin Akova, Hakan Gür, Ufuk Sekir
The present study aimed to analyze the impacts of a low back rehabilitation program accompanied with neck, shoulder and upper back exercises on pain, disability, and physical characteristics of patients with chronic low back pain. Twenty sedentary male patients with chronic low back pain participated in the study on a voluntary basis. The patients were randomly allocated into two groups: a conventional low back exercise group (CE) and a supported exercise group (SE; CE plus upper back, neck, and shoulder exercises)...
December 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29238251/the-acute-effects-of-static-and-cyclic-stretching-on-muscle-stiffness-and-hardness-of-medial-gastrocnemius-muscle
#10
Noriaki Maeda, Yukio Urabe, Shogo Tsutsumi, Shogo Sakai, Hironori Fujishita, Toshiki Kobayashi, Makoto Asaeda, Kazuhiko Hirata, Yukio Mikami, Hiroaki Kimura
This study aimed to clarify the acute effects of static stretching (SS) and cyclic stretching (CS) on muscle stiffness and hardness of the medial gastrocnemius muscle (MG) by using ultrasonography, range of motion (ROM) of the ankle joint and ankle plantar flexor. Twenty healthy men participated in this study. Participants were randomly assigned to SS, CS and control conditions. Each session consisted of a standard 5-minute cycle warm-up, accompanied by one of the subsequent conditions in another day: (a) 2 minutes static stretching, (b) 2 minutes cyclic stretching, (c) control...
December 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29238214/pain-sensitivity-and-torque-used-during-measurement-predicts-change-in-range-of-motion-at-the-knee
#11
Mark D Bishop, Steven Z George
Objective: To determine the extent to which changes in knee range of motion (ROM) after a stretching program are related to sensory factors at the time of testing and the amount of force used during the measurement of ROM, rather than changes in soft-tissue properties. Design: Randomized, single-blind design. Participants were randomly assigned to a control or stretching group. Setting: Research laboratory. Participants: Forty-four healthy volunteers (22...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/29234561/comparison-of-functional-activities-on-structural-changes-of-the-inferior-patellar-pole
#12
Kelli McKinney, Harvey Wallmann, Patrick Stalcup, Katie DiTommaso
Background: It is well known that eccentric and concentric exercise produce varied amounts of stress on the connective tissues. Diagnostic ultrasound has been used to measure these structural changes by observing fascicle length, angle, and thickness; however, there is a lack of evidence comparing the structural changes as it relates to eccentric, concentric, and stretching protocols. Purpose: The purpose of this study was to compare the acute effects of static stretching, eccentric, concentric, and a combination of eccentric/concentric exercises on structural changes of the muscle tendon unit at the inferior patellar pole utilizing the diagnostic ultrasound...
December 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29223884/chronic-effect-of-different-types-of-stretching-on-ankle-dorsiflexion-range-of-motion-systematic-review-and-meta-analysis
#13
REVIEW
Diulian Muniz Medeiros, Tamara Fenner Martini
The calf muscles are one of the muscle groups that have the most need for adequate flexibility since they are deeply related to normal lower limb function. When the goal is to increase flexibility, the most commonly used technique is stretching. However, it remains unknown which stretching technique and parameters are the most effective to increase flexibility. Hence, the aim of the current review was to investigate the influence of chronic stretching on ankle dorsiflexion range of motion (DFROM) of healthy individuals...
October 27, 2017: Foot
https://www.readbyqxmd.com/read/29199789/caffeine-acute-static-stretching-and-maximum-knee-flexion-strength
#14
Tyler M Farney, Arnold G Nelson, Joke Kokkonen
BACKGROUND: Reductions in one repetition maximum lifts (1RM) following static stretching can be attributed to enhanced neural inhibition, which can be reduced by using stimulants like caffeine. This study compared knee-flexion 1RM following either static stretching (SS) or no-stretching (NS), as well as after ingesting either caffeine (C) or placebo (P). METHODS: Twenty-four participants (12 female, 12 male) performed four random counterbalanced knee flexion 1RM tests...
December 1, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29189581/impact-of-10-minute-interval-roller-massage-on-performance-and-active-range-of-motion
#15
D D Hodgson, P J Quigley, J H D Whitten, J C Reid, David G Behm
Hodgson, DD, Quigley, PJ, Whitten, JHD, Reid, JC, and Behm, DG. Impact of 10-minute interval roller massage on performance and active range of motion. J Strength Cond Res XX(X): 000-000, 2017-Roller massage (RM) has been shown to increase range of motion (ROM) without subsequent performance deficits. However, prolonged static stretching (SS) can induce performance impairments. The objective of this study was to examine the effects of combining SS and RM with and without subsequent RM on ROM and neuromuscular performance...
November 16, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29184306/no-significant-correlation-between-the-intensity-of-static-stretching-and-subject-s-perception-of-pain
#16
Wootaek Lim, Hyunju Park
[Purpose] The purpose of this study was to determine whether the intensity of static stretching measured quantitatively is related to subjects' perception of pain. [Subjects and Methods] Sixty-eight participants were recruited. Static stretching was performed once for 30 seconds while maintaining the knee at 0° flexion and was continued to the point where pain was recognized. The intensity of stretching exerted by the practitioner was quantitatively measured by using a handheld dynamometer (HHD). A subject's pain scaled on one's perception was measured by using the visual analog scale (VAS)...
October 2017: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29163203/cyclic-stretch-alters-vascular-reactivity-of-mouse-aortic-segments
#17
Arthur Leloup, Sofie De Moudt, Cor Van Hove, Paul Fransen
Large, elastic arteries buffer the pressure wave originating in the left ventricle and are constantly exposed to higher amplitudes of cyclic stretch (10%) than muscular arteries (2%). As a crucial factor for endothelial and smooth muscle cell function, cyclic stretch has, however, never been studied in ex vivo aortic segments of mice. To investigate the effects of cyclic stretch on vaso-reactivity of mouse aortic segments, we used the Rodent Oscillatory Tension Set-up to study Arterial Compliance (ROTSAC). The aortic segments were clamped at frequencies of 6-600 bpm between two variable preloads, thereby mimicking dilation as upon left ventricular systole and recoiling as during diastole...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29150297/prolonged-stretching-of-the-ankle-plantarflexors-elicits-muscle-tendon-adaptations-relevant-to-ankle-gait-kinetics-in-children-with-spastic-cerebral-palsy
#18
Teresa Martín Lorenzo, Eduardo Rocon, Ignacio Martínez Caballero, Ana Ramírez Barragán, Sergio Lerma Lara
Tissue related ankle hyper-resistance has been reported to contribute to equinus gait in children with spastic cerebral palsy. Hence, ankle plantarflexor stretching programs have been developed in order to restore passive ankle dorsiflexion. Despite high quality evidence on the limited effects of stretching on passive joint mobility, further muscle-tendon adaptations have been reported which may impact gait performance. As such, children with spastic cerebral palsy subject to long-term manual static stretching achieved dorsiflexion gains through the reduction of muscle and fascicle strain whilst preserving tendon strain, and prolonged use of ankle-foot orthoses achieved similar dorsiflexion gains through increased tendon strain whilst preserving muscle and fascicle strain...
November 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/29143172/identification-of-key-genes-and-construction-of-microrna-mrna-regulatory-networks-in-bladder-smooth-muscle-cell-response-to-mechanical-stimuli-using-microarray-expression-profiles-and-bioinformatics-analysis
#19
Liao Peng, De-Yi Luo
PURPOSE: To identify keys genes and elucidate miRNA-mRNA regulatory networks in Bladder smooth muscle cell (BSMC) response to mechanical stimuli. METHODS: Human BSMCs, seeded on a silicone membrane, were subjected to mechanical stretch or without stretch. Microarray was used to analyze the differential expression of mRNAs and miRNAs between human BSMCs under mechanical stretch and control static control group. Differentially expressed genes(DEGs) and miRNAs (DEMs) in these two groups were identified...
November 15, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/29120006/manufactured-brace-modalities-for-elbow-stiffness
#20
Nipun Sodhi, Anton Khlopas, Michael D Vaughn, Jaiben George, George Yakubek, Assem A Sultan, Steven F Harwin, Michael A Mont
Multiple surgical and nonsurgical treatment options exist for patients with elbow stiffness. Many nonsurgical mobilization bracing options have been implemented to increase elbow range of motion. Three of the main bracing options for these patients are turnbuckle, static progressive stretch, and dynamic bracing. The purpose of this study was to review the current literature on turnbuckle, static progressive stretch, and dynamic bracing to provide information for practitioners and patients regarding which brace is more appropriate to use for elbow stiffness...
November 8, 2017: Orthopedics
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