PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “Muscle Stretching Exercises”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 217 records · Page 12Linked to original sources
PubMed2000

A randomized trial of preexercise stretching for prevention of lower-limb injury.

PURPOSE: This study investigated the effect of muscle stretching during warm-up on the risk of exercise-related injury. METHODS: 1538 male army recruits were randomly allocated to stretch or control groups. During the ensuing 12 wk of training, both groups performed active warm-up exercises before physical training sessions. In addition, the stretch group performed one 20-s static stretch under supervision for each of six major leg muscle groups during every warm-up. The control group did not stretch. RESULTS: 333 lower-limb injuries were recorded during the training period, including 214 soft-tissue injuries. There were 158 injuries in the stretch group and 175 in the control group. There was no significant effect of preexercise stretching on all-injuries risk (hazard ratio [HR] = 0.95, 95% CI 0.77-1.18), soft-tissue injury risk (HR = 0.83, 95% CI 0.63-1.09), or bone injury risk (HR = 1.22, 95% CI 0.86-1.76). Fitness (20-m progressive shuttle run test score), age, and enlistment date all significantly predicted injury risk (P < 0.01 for each), but height, weight, and body mass index did not. CONCLUSION: A typical muscle stretching protocol performed during preexercise warm-ups does not produce clinically meaningful reductions in risk of exercise-related injury in army recruits. Fitness may be an important, modifiable risk factor.

Adolescent↗
PubMed2001

Motor impairment in the human hand following eccentric exercise.

Motor impairment was induced by having subjects perform two sets of 50 maximal contractions, using the first dorsal interosseus (FDI) muscle to abduct the index finger, while the muscle was being stretched. Tests were conducted prior to the exercise (pre-exercise) and 24 h following the exercise (post-exercise). There were declines of 19% in maximal abduction torque and 15% in maximal flexion torque at the metacarpaphalangeal joint, during isometric contraction post-exercise compared to pre-exercise. The ability to stabilize the metacarpophalangeal joint about the abduction/adduction axis was reduced by 14% post-exercise, and the variability in tracking an isometric torque target increased by 30%. There was a decrement of 7%-10% in the median frequency of the power density spectrum of FDI electromyogram (EMG) throughout a 60 s maintained abduction at 50% maximal voluntary contraction. The mean rectified EMG, on the other hand, increased by 100%-175% for torque levels below 40% of maximal voluntary contraction, post-exercise. The results were consistent with preferential injury of type II muscle fibres in FDI. Although non-exercised synergist muscles appeared to be inhibited during maximal voluntary flexion, there was evidence that they compensated for injured FDI muscle fibres during maintained contraction at sub-maximal flexion torque.

Adult↗
PubMed2004

Comparison of laser, dry needling, and placebo laser treatments in myofascial pain syndrome.

OBJECTIVE: We aimed to evaluate the effectiveness of laser therapy in myofascial pain syndrome treatment. BACKGROUND DATA: Myofascial pain syndrome is a disease that is characterized by hypersensitive points called trigger points found in one or more muscles and/or connective tissues. It can cause pain, muscle spasm, sensitivity, stiffness, weakness, limitation of range of motion and rarely autonomic dysfunction. Physical therapy modalities and exercise are used in the treatment of this frequently encountered disease. METHODS: The placebo controlled, prospective, long-term follow up study was planned with 60 patients who had trigger points in their upper trapezius muscles. The patients were divided into three groups randomly. Stretching exercises were taught to each group and they were asked to exercise at home. Treatment duration was 4 weeks. Placebo laser was applied to group 1, dry needling to group 2 and laser to group 3. He-Ne laser was applied to three trigger points in the upper trapezius muscles on both sides with 632.8 nm. The patients were assessed at before, post-treatment, and 6 months after-treatment for pain, cervical range of motion and functional status. RESULTS: We observed a significant decrease in pain at rest, at activity, and increase in pain threshold in the laser group compared to other groups. Improvement according to Nottingham Health Profile gave the superiority of the laser treatment. However, those differences among the groups were not observed at 6-month follow up. CONCLUSIONS: Laser therapy could be useful as a treatment modality in myofascial pain syndrome because of its noninvasiveness, ease, and short-term application.

Acupuncture Therapy↗
PubMed2006

Plyometric exercise in the rehabilitation of athletes: physiological responses and clinical application.

Plyometric exercise was initially utilized to enhance sport performance and is more recently being used in the rehabilitation of injured athletes to help in the preparation for a return to sport participation. The identifying feature of plyometric exercise is a lengthening of the muscle-tendon unit followed directly by shortening (stretch-shortening cycle). Numerous plyometric exercises with varied difficulty and demand on the musculoskeletal system can be implemented in rehabilitation. Plyometric exercises are initiated at a lower intensity and progressed to more difficult, higher intensity levels. The progression to higher-intensity plyometric exercise is thought to resolve postinjury neuromuscular impairments and to prepare the musculoskeletal system for rapid movements and high forces that may be similar to the demands imposed during sport participation, thus assisting the athlete with a return to full function. While there is a large body of scientific literature that supports the use of plyometric exercise to enhance athletic performance, evidence is sparse regarding the effectiveness of plyometric exercise in promoting a quick and safe return to sport after injury. This review will describe the mechanisms involved in plyometric exercise, discuss the considerations for implementing plyometric exercise into rehabilitation protocols, examine the evidence supporting the use of plyometric exercises, and make recommendations for future research.

Adaptation, Physiological↗
PubMed2000

Stretch- and H-reflexes of the lower leg during whole body cooling and local warming.

BACKGROUND: This study was undertaken to evaluate if possible changes in stretch- and H-reflexes could be related to the changes in the EMG activity of the cooled lower leg muscles observed during a stretch-shortening cycle exercise. METHODS: Eight subjects wearing shorts and jogging shoes were exposed once to 27 degrees C and twice to 10 degrees C for 60 min each. During the second exposure to 10 degrees C, the subject's lower legs were kept warm (10 degrees Clw) with electrical pillows. After the exposures Achilles tendon reflex (stretch reflex) was induced and the EMG activity of the triceps surae was measured. Immediately after reflex measurements the EMG activity of the triceps surae and tibialis anterior during a drop-jump (stretch-shortening cycle) was measured. After similar thermal exposures electrically induced H-reflex from the calf was measured. RESULTS: During the preactivity and stretch phases the EMG activity of the triceps surae increased after the exposure to 10 degrees C, whereas during the shortening phase it decreased. During the shortening phase cooling, on the contrary, increased the activity of tibialis surae anterior. These changes disappeared at 10 degrees Clw. At 10 degrees C the maximum EMG-amplitude of triceps surae during stretch reflex decreased (p<0.05), reflecting suppressed muscle spindle activity. Suppressed spindle activity causes the agonist to be unfacilitated and the antagonist muscle contraction to be uninhibited, which was seen in the present study as decreased agonist and increased antagonist EMG activity during the shortening phase at 10 degrees C. The Hmax/Mmax-ratio, H-reflex latency and amplitude increased at 10 degrees C (p<0.05), reflecting increased motoneuron pool excitability. This in part may explain the increased EMG activity during the preactivity and stretch phases. CONCLUSION: Cooling-induced increase in the excitability of the motoneuron pool and suppression of muscle spindle activity seem to be responsible of the EMG activity changes during the stretch-shortening cycle, consequently decreasing muscular performance.

Adult↗
PubMed1976

An early stretching routine for calf muscle strains.

Four hundred patients, average age 35 attended for treatment of strains to calf muscles. There was an average delay of 8 days before presenting. The treatment involved several repetitions of a routine involving ice or short wave for pain relief, passive stretching, ultra sound and exercises firstly for the antagonists and then the injured muscle in that order. Quadriceps exercises and correct walking were performed to ensure fitness for sport after cure. The average treatment time was 6 days. Prevention of disability was aided by early treatment, stretching before activity and exercises to increase strength in the calf. The recurrence rate was 1%.

Adolescent↗
PubMedDate not supplied

Treatment of myofascial pain.

OBJECTIVE: To investigate the effectiveness of ultrasound treatment and trigger point injections in combination with neck-stretching exercises on myofascial trigger points of the upper trapezius muscle. DESIGN: Depression and anxiety associated with chronic pain were assessed using the Beck Depression Inventory (BDI) and the Taylor Manifest Anxiety Scale (TMAS). The study population comprised 102 patients who had myofascial trigger points in one side of the upper trapezius. The patients were randomly assigned to one of three groups: group 1 received ultrasound therapy to trigger points in conjunction with neck-stretching exercises; group 2 received trigger point injections and performed neck-stretching exercises; and group 3, the control group, performed neck-stretching exercises only. Treatment effectiveness was assessed using subjective pain intensity (PI) with a visual analog scale, pressure pain threshold (PT) with algometry, and range of motion (with a goniometer) of the upper trapezius muscle. RESULTS: Compared with the control group, patients in groups 1 and 2 had a statistically significant reduction in PI, an increase in PT, and an increase in range of motion. There were no statistically significant differences between treatment groups 1 and 2. Although not statistically significant, patients in the control group had better results at the 3-mo follow-up. The BDI scores indicated depression in 22.9% of the patient, with 4.8% of the patients having severe depression. High anxiety scores on the TMAS were present in 89.3% of the patients. When BDI and TMAS scores were compared with PI or PT levels, no significant correlations were found, but when compared with pain duration before treatment, correlations were significant. CONCLUSIONS: Patients with myofascial pain syndrome had higher scores for anxiety than for depression. When combined with neck stretching exercises, ultrasound treatment and trigger point injections were found to be equally effective.

Adult↗
PubMed2002

Heart rate at the onset of muscle contraction and during passive muscle stretch in humans: a role for mechanoreceptors.

Previous evidence suggests that the heart rate (HR) increase observed with isometric exercise is dependent on different afferent mechanisms to those eliciting the increase in blood pressure (BP). Central command and muscle metaboreceptors have been shown to contribute to this differential effect. However, in experimental animals passive stretch of the hindlimb increases HR suggesting that small fibre mechanoreceptors could also have a role. This has not been previously shown in humans and was investigated in this study. Healthy human volunteers were instrumented to record BP, ECG, respiration, EMG of rectus femoris and gastrocnemius and contraction force of triceps surae. Voluntary isometric contraction of triceps surae elicited a significant HR change in the first three respiratory cycles at 40 % of maximum voluntary contraction whereas BP did not change significantly until after 30 s. This suggests that different mechanisms are involved in the initiation of the cardiovascular changes. Sustained passive stretch of triceps surae for 1 min, by dorsiflexion of the foot, caused a significant (P < 0.05) increase in HR (5 +/- 2.6 beats min(-1)) with no significant change in BP. A time domain measure of cardiac vagal activity was reduced significantly during passive stretch from 69.7 +/- 12.9 to 49.6 +/- 8.9 ms. Rapid rhythmic passive stretch (0.5 Hz for 1 min) was without significant effect suggesting that large muscle proprioreceptors are not involved. We conclude that in man small fibre muscle mechanoreceptors responding to stretch, inhibit cardiac vagal activity and thus increase HR. These afferents could contribute to the initial cardiac acceleration in response to muscle contraction.

Adult↗
PubMed2005

[A new test (VITTORIO Test) for functional fitness assessment in rehabilitation after cardiac surgery].

An adequate assessment of physical function (PF) in Cardiac Rehabilitation (CR) plays a central role in early detection of physical limitations. Traditionally exercise tolerance has been used as an indicator of overall PF. However exercise tolerance has been shown to poorly predict patients' ability to perform daily-life activities. The goal of the present study is to evaluate a new test, named VITTORIO TEST, for assessing various component of daily activities among patients in CR after cardiac surgery. VITTORIO test consists in 8 items that assess lower and upper extremity strength and flexibility, agility, dynamic balance, aerobic capacity. 500 patients (359 males; 141 females) admitted to CR programs following cardiac surgery (349 coronary artery bypass surgery; 151 valvular surgery) were enrolled in the study. They were evaluated with an initial test (T1) (10.7 +/- 6.3 days after cardiac surgery) and a final test (T2) after an in-hospital intensive training program (mean length 16.8 +/- 6.6 days) consisting in stretching, large muscle group and aerobic activity, resistance exercises. Statistical analysis showed a significant improvement of all items at the end of the rehabilitation program. Old patients (>70 years) and particularly females demonstrate exercise improvement comparable to that of younger subjects especially regards lower extremity strength and aerobic capacity. VITTORIO test is inexpensive, simple and easy to perform by the patient. Through the identification and the measurement of different aspects of physical disability, it allows a personalized rehabilitation exercise program. It could be used as an outcome measure of CR programs.

Aged↗
PubMed1999

Reduced reflex sensitivity persists several days after long-lasting stretch-shortening cycle exercise.

The mechanisms related to the acute and delayed secondary impairment of the stretch reflex function were investigated after long-lasting stretch-shortening cycle exercise. The results demonstrated a clear deterioration in muscle function immediately after fatigue, which was accompanied by a clear reduction in active and passive reflex sensitivity. For active and passive stretch reflexes, this reduction was biphasic (P < 0.05 to P < 0.001). However, for the ratio of the electrically induced maximal Hoffmann reflex to the maximal mass compound action potential, only one significant reduction was seen immediately after fatigue (71.2%, P < 0.01). A similar significant (P < 0.01) decrease in the stretch-resisting force of the muscle was also detected. Clear increases were found in the indirect markers of muscle damage (serum creatine kinese activity and skeletal troponin I), which could imply the occurrence of ultrastructural muscle damage. It is suggested that the acute reduction in reflex sensitivity is of reflex origin and due to two active mechanisms, disfacilitation and presynaptic inhibition. However, the delayed second decline in the sensitivity of some reflex parameters may be attributable to the secondary injury, because of some inflammatory response to the muscle damage. This might emphasize the role of presynaptic inhibition via group III and IV muscle afferents.

Adult↗
PubMed2003

[Nonoperative treatment of ischemic contractures of forearm and hand].

The acute compartment syndrome of the forearm and hand leads to severe muscle necrosis and nerve damage if the diagnosis is not recognized. The resulting ischemic contractures and paralyses require a distinctive regime of therapy. Therefore,physiotherapy and occupational therapy are of main importance. In mild cases exclusively nonoperative treatment is possible. The goal is to exercise the function of the remaining muscles, mobilize the joints, and stretch muscle scars. Severe forms need surgery. To reach the best starting point for the operation, extensive preoperative active and passive exercises as well as splint therapy are required. Postoperatively, this regime has to be continued to retain a favorable outcome. The treatment approach is demonstrated with a case report.

Compartment Syndromes↗
PubMed1993

Muscle stiffness, strength loss, swelling and soreness following exercise-induced injury in humans.

1. In order to study injury-related changes in muscle stiffness, injury to the elbow flexors of thirteen human subjects was induced by a regimen of eccentric exercise. 2. Passive stiffness over an intermediate range of elbow angles was measured with a device which held the relaxed arm of the subject in the horizontal plane and stepped it through the range of elbow angles from 90 deg to near full extension at 180 deg. The relation between static torque and elbow angle was quite linear over the first 50 deg and was taken as stiffness. 3. Stiffness over this range of angles more than doubled immediately after exercise and remained elevated for about 4 days, and may result from low level myofibrillar activation induced by muscle stretch. 4. Arm swelling was biphasic; arm circumference increased by about 3% immediately after exercise, fell back toward normal, then increased by as much as 9% and remained elevated for as long as 9 days. 5. Ultrasound imaging showed most of the swelling immediately following the exercise to be localized to the flexor muscle compartment; subsequent swelling involved other tissue compartments as well. 6. Muscle strength declined by almost 40% after the exercise and recovery was only slight 10 days later; the half-time of recovery appeared to be as long as 5-6 weeks.

Adult↗
PubMed1997

[Stretching].

Static stretching exercises have become very popular over the past fifteen years both in professional and amateur sports. In the fields of physical therapy and in manual therapy, in particular, static stretching has become part of a standard and successful treatment modality. Together with an appropriate strengthening program, static stretching techniques have become the therapy of choice for treatment of muscle imbalances associated with functional disturbances of the musculoskeletal system. Specific muscle length testing procedures have been developed to determine muscle shortening in clinical practice. In this article, the fundamental principles of the different types of muscle stretching techniques are described, including the dynamic stretching and static stretching techniques. The exercises are organized along the concepts of passive static or neuromuscular stretching principles. The pertaining neurophysiologic fundamentals are discussed, as are the benefits of the individual methods of a functional exercise program. Examples are provided for the most important muscle groups.

Exercise↗
PubMed1994

Warm-up, stretching and massage diminish harmful effects of eccentric exercise.

The effect of a combination of a warm-up, stretching exercises and massage on subjective scores for delayed onset muscle soreness (DOMS) and objective functional and biochemical measures was studied. Fifty people, randomly divided in a treatment and a control group, performed eccentric exercise with the forearm flexors for 30 min. The treatment group additionally performed a warm-up and underwent a stretching protocol before the eccentric exercise and massage afterwards. Functional and biochemical measures were obtained before, and 1, 24, 48, 72 and 96h after exercise. The median values at the five post-exercise time points differed significantly for DOMS measured when the arm was extended (p = 0.043). Significant main effects for treatment were found on the maximal force (p = 0.026), the flexion angle of the elbow (p = 0.014) and the creatine kinase activity in blood (p = 0.006). No time-by-treatment interactions were found. DOMS on pressure, extension angle and myoglobin concentration in blood did not differ between the groups. This combination of a warm-up, stretching and massage reduces some negative effects of eccentric exercise, but the results are inconsistent, since some parameters were significantly affected by the treatment whereas others were not, despite the expected efficacy of a combination of treatments. The objective measures did not yield more unequivocal results than the subjective DOMS scores.

Adult↗
PubMed1998

Molecular and cellular adaptation of muscle in response to physical training.

Molecular biology tools can be used to answer questions as to how adaptations occur in skeletal muscle with training that could provide new frameworks to improve physical performance. A number of mRNAs for transfer of metabolic substrates into muscle cells increase after a single bout of exercise demonstrating the responsiveness of some gene expression to exercise. In stretch-induced hypertrophy SRE1 of the skeletal alpha-actin promoter is required to transactivate the promoter. Less retardation of SRF in crude nuclear extracts from the stretched muscle implies a conformational change in SRF because of the stretch. Transgenic animals will provide a tool to test questions concerned with how exercise signals adaptive changes in gene expression. Molecular biological approaches will be able to evaluate the interaction between physical activity levels and the expression of genes that modulate the susceptibility to many chronic diseases. Benefits of exercise extend beyond fitness to better health. Molecular biology is an important tool which should lead to improved physical performance and health in both elite athletes and the general public.

Adaptation, Physiological↗
PubMed2004

The acute effects of static stretching on peak torque, mean power output, electromyography, and mechanomyography.

The purpose of this study was to examine the acute effects of static stretching on peak torque (PT), the joint angle at PT, mean power output (MP), electromyographic (EMG) amplitude, and mechanomyographic (MMG) amplitude of the vastus lateralis (VL) and rectus femoris (RF) muscles during maximal, voluntary concentric isokinetic leg extensions at 60 and 240 degrees x s(-1) of the stretched and unstretched limbs. Twenty-one volunteers [mean age (SD) 21.5 (1.3) years] performed maximal, voluntary concentric isokinetic leg extensions for the dominant and non-dominant limbs at 60 and 240 degrees x s(-1). Surface EMG (muVrms) and MMG (mVrms) signals were recorded from the VL and RF muscles during the isokinetic tests. PT (Nm), the joint angle at PT, and MP (W) were calculated by a dynamometer. Following the initial isokinetic tests, the dominant leg extensors were stretched using four static stretching exercises. After the stretching, the isokinetic tests were repeated. PT decreased (P< or =0.05) from pre- to post-stretching for the stretched limb at 60 and 240 degrees x s(-1) and for the unstretched limb at 60 degrees x s(-1). EMG amplitude of the VL and RF also decreased (P< or =0.05) from pre- to post-stretching for the stretched and unstretched limbs. There were no stretching-induced changes (P>0.05) for the joint angle at PT, MP, or MMG amplitude. These findings indicated stretching-induced decreases in force production and muscle activation. The decreases in PT and EMG amplitude for the unstretched limb suggested that the stretching-induced decreases may be due to a central nervous system inhibitory mechanism.

Adult↗