Shoulder Muscle Strength Research Articles

Relationship between anthropometric and strength variables and maximal throwing velocity in female junior handball players - a pilot study

Background: Throwing velocity is one of the determinant scoring elements in handball. However, our knowledge of anthropometric factors and shoulder muscle strength among female players and how these affect throwing velocity is limited. Objective: This study aimed to assess the relationships between throwing velocity and the physical traits of anthropometric factors and shoulder muscle strength in female handball players. Methods: Nine elite female junior handball players (age 17.1 ± 1.7 years, body height 169.7 ± 3.8 cm, body mass 66.2 ± 6.8 kg, experience with handball 8.9 ± 1.7 years) participated in the study. Spearman's correlation coefficient was used to detect correlations between throwing velocity and shoulder internal rotator torque, explosive strength deficit, and anthropometric parameters of the upper limb. Results: Our results showed significant correlations between throwing velocity and upper limb length (r = .82) and hand length (r = .68); however, no significant correlations were observed between throwing velocity and shoulder internal rotator peak torque, explosive strength deficit, lean body mass of upper limb, and other anthropometric parameters. Conclusions: The results of this study suggest that the lengths of the upper limb and hand are the two main elements that affect throwing velocity in female handball players; this could be employed in talent identification.

Motor Abilities: Identification of Development Level in Boys Aged 12-14

The study objective is to determine the possibility of identifying the state of strength abilities development in boys aged 12-14, using the methodology of multidimensional statistics.
 Materials and methods. The study involved boys: 12 (n =35), 13 (n = 36), 14 (n = 36) years old. The study used the following methods: analysis and collation of scientific and methodological literature, general scientific methods of theoretical level, such as analogy, analysis, synthesis, abstraction, induction, as well as general scientific methods of empirical level: observation, testing, experiment. The testing program included well-known tests.
 Results. In identifying the state of motor abilities development in boys aged 12-14, the most important results were obtained in tests: 10 “Squats Test (two legs), quantity of times” (0.519), 9 “Trunk Lift Test, quantity of times” (0.497), 21 “Flamingo Balance Test - single leg balance test” (-0.496), 1 “Pull-Up / Chin Up Test (low crossbar), quantity of times” (0.428), 19 “Hand Tapping Test, sec.” (-0.427), 20 “Seated Forward Bend, cm” (-0.412), 5 “The subject lies in prone position, arms bent at the elbow 90 degrees - hold position in seconds” (0.408). These tests characterize the comprehensive development of motor abilities in boys aged 12-14. 
 In identifying the state of motor abilities development in boys aged 13-14, the most important results were obtained in tests: 8 “Decline Reverse Crunch on Bench, quantity of times” (-0.989), 11 “Single Leg Squat (SLS) Test - right leg, quantity of times” (0.965), 1 “Pull-Up / Chin Up Test (low crossbar), quantity of times” (0.676), №13 “Single Leg Squat (Pistol) - right leg” (0.682), 17 “Eurofit Sit Up Test (for 30 sec.), quantity of times” (0.454). These tests characterize the development level of relative and static leg strength, strength endurance of abdominal muscles, and dynamic strength of shoulder muscles.
 Conclusions. A discriminant analysis made it possible to determine informative indicators for comprehensive control of motor abilities development in boys aged 12-14; to answer the question as to how significantly the states of motor abilities development in boys aged 12, 13 and 14 differ; what motor tests most substantially influence the differentiation of classes; what class the object belongs to based on the values of discriminant variables.
 To identify the level of motor abilities development in boys aged 12-14 years, it is necessary to focus on the indicators of relative strength and strength endurance; in boys aged 13 and 14 years – on the indicators of strength endurance of abdominal muscles and endurance of leg muscles.

Effect of Graded Thera-Band Exercises on Shoulder Muscle Strength and Activities of Daily Life in Modified Radical Mastectomy Subjects

Modified radical mastectomy leads to dissection of muscles and soft tissue structures and chemotherapy causes weakness of the muscles involved resulting in functional limitations that affects the activities of daily life. Graded resistance exercise is effective in improving muscle strength, functional capacity and activities of daily life. To find the effect of graded thera-band exercises on shoulder muscle strength and activities of daily life in modified radical mastectomy patients. A total of 40 females who underwent mastectomy procedure along with chemotherapy or radiotherapy for breast carcinoma were included based on inclusion criteria. Group A received conventional strengthening program with weights and group B received thera-band exercises for five days per week for eight weeks and pre and post assessment was done with Disabilities of Arm, Shoulder and Hand(DASH) Questionnaire and Manual Muscle Testing(MMT). Statistical results within group values for Conventional strengthening program for DASH (p = <0.0001) and mean difference(MD) was 2.58, MMT for Shoulder flexion (p=0.867),MD= -0.15 and extension(p=0.046),MD= -2, abduction (p=0.775),MD= -0.3, internal rotation (p=0.701),MD= -0.35 and external rotation (p=0.039),MD= -1.65. The within group statistical results for experimental group for DASH (p=<0.0001),MD=4.98 , MMT for Shoulder flexion (p=0.012),MD= -2.05, extension (p=0.0007),MD= -2.1 and external rotation(p=0.036),MD= -2.2, abduction (p=0.055),MD= -1.65 and internal rotation (p=0.051),MD= -1.4 . The results conclude that strengthening with thera-band showed more better effect compared to conventional strengthening program. Strengthening exercise program with thera-band showed significant improvement in the outcome variables on strength and activities of daily life involving shoulder, arm and hand.

Partial-thickness Rotator Cuff Tear Itself Did Not Cause Shoulder Pain Or Muscle Weakness In Baseball Players

Objectives:Rotator cuff tears are common shoulder injuries in baseball players. In some severe tears (i.e. through more than 50% of the cuff’s thickness), conservative treatment does not work well, and surgical treatment is sometimes chosen in an effort to ensure return to play. In contrast, some partial thickness rotator cuff tears do not cause shoulder symptoms, even during throwing motion. The objective of this study was to assess whether partial thickness rotator cuff tears cause shoulder pain and muscle weakness in baseball players.Methods:We studied 87 university baseball players (age: 19.5±0.8 years; baseball career: 11.5±1.6 years). Rotator cuff tendons were ultrasonographically examined (Fig 1), then divided into 4 groups; (1) no tear, (2) supraspinatus tendon tear, (3) infraspinatus tendon tear, (4) both supraspinatus and infraspinatus tendons tear. Current shoulder pain and shoulder muscle strength (Dominant/Non-dominant) in abduction, external rotation, and internal rotation were compared using Chi square test and t-test.Results:Forty-one (47%) players were diagnosed with articular-sided partial-thickness rotator cuff tears using ultrasonography. Nineteen tears were in the supraspinatus, 13 in the infraspinatus, and 9 in both the supraspinatus and the infraspinatus. Tear depth was 4.6±2.3 mm in the supraspinatus and 6.2±3.6 mm in the infraspinatus. There was no significant difference in rate of shoulder pain (p=0.96) and muscle strength among four groups (p=0.15 - 0.70).Conclusion:In this study, articular-sided partial-thickness rotator cuff tears did not cause shoulder pain and muscle weakness in university baseball players. Most of articular-sided partial-thickness rotator cuff tears are tears of the superior capsule but not the rotator cuff tendons, because the superior capsule is attached in the articular half of the greater tuberosity. Therefore, most so-called articular-sided partial-thickness rotator cuff tears may not be pathological tendon tear.

Clinical application study of acupotomy-injection technique with targeted three-point in the treatment of frozen shoulder

To observe the clinical efficacy of minimally invasive acupotomy-injection technique with targeted three-point in the treatment of frozen shoulder. From March 2017 to November 2018, a total of 140 patients with frozen shoulder were randomly divided into observation group and control group. The observation group was made up of 70 patients, including 30 males and 40 females; the mean age was (59.2±11.5) years old; the mean duration of disease was (6.76±4.14) months; the observed patients were treated with acupotomy-injection technique with targeted three-point. There were also 70 patients in the control group, made up of 29 males and 41 females; the mean age was (58.9±11.8) years old; the mean duration of disease was (6.65±3.98) months; the control group was treated with the small needle knife therapy. Before treatment and one month after the treatment, the pain levels of both groups were assessed using the short-form McGill pain questionnaire, and the shoulder function was evaluated using the Constant-Murley Shoulder Outcome Scoring. The clinical efficacy of between groups was compared after treatment, and finally, the improvement rate of pain degree was used to evaluate the therapeutic effect of the patients. The PRI, VAS, PPI and total pain scores of frozen shoulder patients in both groups decreased significantly one month after the treatment compared with those before treatment (P<0.01). Compared with the control group, the observation group exhibited a more significant decrease in pain scores (P<0.01). Furthermore, the shoulder pain, muscle strength, ADL, ROM and total function scores of frozen shoulder patients in the two groups were significantly improved one month after the treatment compared with those before treatment(P<0.01). The inter-group comparison indicated that the pain, ADL, ROM and total function scores were improved obviously in the observation group when compared to those in the control group(P<0.01), but no remarkable difference was found between muscle strength score and the control group(P>0.05). In addition, the markedly effective rate of pain improvement was 70.0% and 45.7% in the observation group and the control group, respectively, meanwhile, the corresponding total effective rate was 97.1% and 84.3%, respectively. The application of acupotomy-injection technique with targeted three-point in the treatment of frozen shoulder shows definite efficacy, easy operation, little pain and high safety. Therefore, it is an ideal method for minimally invasive treatment.

Diagnostic Reasoning and Physiotherapy Treatment for A 65 Years Old Female with Left Sided Frozen Shoulder

Introduction: Frozen shoulder is a self-limiting condition that affects daily activities. Early diagnosis and treatment is essential for better prognosis. Accurate diagnosis largely depends on reasoning skills of physiotherapy practitioners.&#x0D; Methods: Case study.&#x0D; Intervention: In this case, pattern recognition was used as diagnostic reasoning and posterior to anterior and caudal mobilization techniques to decrease pain and improve range of motion. Beside, theraband was to strengthen muscle strength of shoulder as well.&#x0D; Results: After application of 12 sessions of treatment, patient showed improvement in pain at VAS by 5 cm, improvement in passive ROMs by 20°, 10° and 25° in consequently in abduction, medial rotation and lateral rotation, improvement in SPDI by 42% and muscle power improved by Grade I in abductors, medical rotators and lateral rotators.&#x0D; Conclusion: Reasoning process helps physiotherapist for correct diagnosis and application of evidence based physiotherapy intervention showed significant improvements in symptoms after frozen shoulder.

GAMBARAN KEKUATAN, DAYA TAHAN OTOT, POWER, KELENTUKAN, KECEPATAN REAKSI, DAN DAYA TAHAN JANTUNG PARU ATLET CABANG OLAHRAGA TENIS MEJA JAWA BARAT PON XVIII/2012 RIAU BERDASARKAN STANDAR KONI PUSAT

On PON XVIII/2012 Riau, achievements earned by West Java table tennis athletes were not the best. Those athletes only earned 1 silver medal and 1 bronze medal. One of several factors influencing these athletes achievement is physical condition of the athlete.Underwhelming achievements may be caused by discrepancy of athletes physical condition with Central KONI standards. This study aimed to describe predominant physical components of West Java table tennis athletes in PON XVIII/2012 Riau according to Central KONI standard. The study was conducted using descriptive study design andcross sectional approach using secondary data that has been measured by Sport Medicine field of KONI West Java. Secondary data consists of predominant physical components in table tennis athletes, which are strength, muscle endurance, power, flexibility, reactionspeed, and heart lung strength, that will be compared to Central KONI standard. Based on Central KONI standard, there were predominant physical component of West Java table tennis athletes in PON XVIII/2012 Riau still on deficient and adequate level, which were arm and shoulder muscle strength, leg muscle strength, abdominal muscle endurance, arm muscle power, and heart lung endurance in male athletes; and arm and shoulder strength, abdominal muscle endurance, leg muscle strength, and heart lung endurance in female athletes. There were still predominant physical components of West Java table tennisathletes that have not achieved good, very good or perfect category according to Central KONI standard. Hence, efforts to coach athletes through scalable and well programmed training are needed. In conclusion, an athlete can earn gold medal if predominant physical component capability of said athlete achieved good, very good or perfect category.

Effects of resistance training method on body composition, isokinetic strength and endurance, cardiopulmonary function, anaerobic power in female judo players

Purpose The purpose of this study was to investigate the effects of training methods on body composition, isokinetic strength and muscle endurance, cardiopulmonary function, and anaerobic power in female judo players. Methods Subjects performed weight training (n=10) and circuit weight training (n=10) consisting of 10 sports items for 12 weeks. In order to analyze the effects of training, body composition, isokinetic strength and muscle endurance, cardiopulmonary function, and anaerobic power were measured and the effect of training was verified. Results First, the comparison of body composition between WT and CWT groups showed that significant interaction effect between group and period was found in all variables (weight: F=1082.694, p=.001, body fat mass F=199.999, p=.001; skeletal muscle mass F=2481.698, p=.001, and percentage body fat: F=496.246, p=.001). Second, there was a significant interaction effect between group and duration in shoulder muscle strength and knee endurance (EPTL: F=6.598, p=.019; EAPL: F=12.860, p=.002). Conclusions The result of this study showed that the interaction effect between period and group was not significant according to the training method but the overall effect of the circuit weight training group was more positive than the weight training group. Therefore, it can be concluded that the 12 weeks circuit weight training can contribute to improve the performance of female Judo players by improving body composition, strength and muscle endurance, cardiopulmonary function and anaerobic power.

Clinical comparative study of thoracoscopic assisted reduction and traditional manual reduction with percutaneous intramedullary nail internal fixation for mid-clavicular fractures

To compare the effectiveness of thoracoscopic assisted reduction and traditional manual reduction with percutaneous intramedullary nail internal fixation in the treatment of mid-clavicular fractures. A prospective randomized controlled trial was conducted. Twenty-two patients with mid-clavicular fractures who met the selection criteria between March 2012 and March 2017 were recruited and randomly divided into trial group (7 cases, thoracoscopic assisted reduction and percutaneous intramedullary nail fixation) and control group (15 cases, traditional manual reduction and percutaneous intramedullary nail fixation). There was no significant difference in gender, age, side, cause of injury, fracture classification, interval between injury and operation between the two groups ( P>0.05). The operation time and fracture healing time were recorded and compared between the two groups. The effectiveness was evaluated by Constant-Murley scale at 6 months after operation, which included subjective evaluation indexes (functional activity and pain) and objective evaluation indexes (range of motion of shoulder joint and muscle strength). The operation time of the trial group was significantly longer than that of the control group ( t=5.881, P=0.000). Patients in both groups were followed up 7-20 months, with an average of 11 months. Satisfactory anatomical reduction achieved in all patients, and all incisions healed by first intension. In the control group, 1 patient had difficulty in removing the intramedullary nail, and 1 patient had fracture nonunion. No fracture nonunion or intramedullary nail rupture in the other patients of two groups. There was no significant difference in fracture healing time between the two groups ( t=0.764, P=0.453). At 6 months after operation, there was no significant difference in Constant-Murley scale between the two groups ( P>0.05). The treatment of the mid-clavicular fracture by using thoracoscopic assisted reduction with intramedullary nail internal fixation requires longer operation time, but does not require fluoroscopy. The effectiveness is comparable to that of traditional surgery.

Correlation between Functional Disorders of Temporomadibular Joint and Upper Crossed Syndrome

Research background. The imbalance between the jaw and neck muscle activity occurs as a compensatory mechanism in order to stabilize the jaw and neck structural parts in temporomandibular joint (TMJ) disorders (Ries et al., 2008). Changes occur in posture control system if any biomechanical unit varies (Ritzel et al., 2007). One system compensates the unusually active other body system in upper cross syndrome (UCS) (Tharcher et al., 2011). This syndrome is characterized by shortened upper trapezius, pectoralis major and romboids and week middle and lower trapezius, serratus anterior and deep neck flexors (Moore, 2004; Tharcher et al., 2011). Thus, it is believed that there may be a direct link between the upper cross syndrome and temporomandibular joint dysfunction. Purpose. Explore relationship between temporomandibular joint dysfunction and upper crossed syndrome in women. Methods. Thirty female volunteers participated in the study, and they were divided into groups according to trigger points in the shoulder and neck muscles: group 1 – painful shoulder and neck muscles (32.65 ± 12.34 years), group 2 – painless shoulder and neck muscles (34.5 ± 10.95 years). Survey was carried out assessing TMJ function during observation, palpation, evaluation of the sagittal craniovertebral angle, the neck and shoulder muscle length, strength, pain and deep neck muscle endurance was examined. Results. It was found that TMJ function was strongly associated with the UCS: trapezius pain as well as upper trapezius and scalenus length. TMJ disorders were associated with headache in both groups. Weak connection between deep neck muscle endurance and TMJ dysfunction was identifed. Conclusions. TMJ mobility is partly related to UCS, and TMJ functional disorders related to headache and sagittal craniovertebral angle. UCS specifc changes, such as pectoralis muscle length changes and impaired deep neck muscle endurance are not related to TMJ dysfunction.Keywords: temporomandibular joint, the upper crossed syndrome, muscle length, headache.

Predictors of shoulder pain in manual wheelchair users

BackgroundManual wheelchair users rely on their upper limbs to provide independent mobility, which leads to high muscular demand on their upper extremities and often results in shoulder pain and injury. However, the specific causes of shoulder pain are unknown. Previous work has shown that decreased shoulder muscle strength is predictive of shoulder pain onset, and others have analyzed joint kinematics and kinetics, propulsion technique and intra-individual variability for their relation to shoulder pathology. The purpose of this study was to determine in a longitudinal setting whether there are specific biomechanical measures that predict shoulder pain development in manual wheelchair users. MethodsAll participants were asymptomatic for shoulder pain and categorized into pain and no pain groups based on assessments at 18 and 36 months later. Shoulder strength, handrim and joint kinetics, kinematics, spatiotemporal measures, intra-individual standard deviations and coefficients of variation were evaluated as predictors of shoulder pain. FindingsIndividuals who developed shoulder pain had weaker shoulder adductor muscles, higher positive shoulder joint work during recovery, and less trunk flexion than those who did not develop pain. In addition, relative intra-individual variability was a better predictor of shoulder pain than absolute variability, however future work is needed to determine when increased versus decreased variability is more favorable for preventing shoulder pain. InterpretationThese predictors may provide insight into how to improve rehabilitation training and outcomes for manual wheelchair users and ultimately decrease their likelihood of developing shoulder pain and injuries.

Physical and Psychological Indicators for Canoeing Athlete Selection

The athlete selection is very important for the success of the team in the event. The study aim is to establish the dominant variable for canoeing athlete selection based on physical and psychological approach. The type of research is development research. This research was conducted at the national training center canoeing athletes in Jatiluhur, West Java, Indonesia. The results showed that there are two predominant indicators of physical and psychological factors in the selection of canoeing athletes. First, Physical includes of height, sitting height, arm span, stretch height, arm length, back muscle, shoulder, and arm muscle strength, abdominal and arm muscular endurance, explosive power, balance, aerobic and anaerobic capacity. Second, Psychological Skills includes: self-confidence, concentration, motivation, mental readiness, team emphasis, and control anxiety. It can be concluded that the selection of canoeing athletes can be done by measuring the physical and psychological indicators, but not all of the physical and psychological indicators can be used as the instruments in the selection of canoeing athlete.

Decreased respiratory performance of children and adolescents with myelomeningocele who use a wheelchair - preliminary data.

Myelomeningocele (MMC) is a neural tube defect that often causes spinal cord injury at the thoracolumbar region, as well as sensory and motor paralysis in the lower limbs. This leads to continuous use of a wheelchair and, consequently, a sedentary lifestyle, predisposition to muscle weakness, cardiovascular and respiratory disorders, obesity, and structural alterations in the spine. We assessed the respiratory function and shoulder strength of MMC participants who were wheelchair-users and had no respiratory complaints and compared them to healthy children and adolescents. MMC (n=10) and healthy (n=25) participants of both genders with a mean age of 12.45 years (SD=2.1) were assessed for weight, height, respiratory performance, and isometric peak for shoulder flexors, extensors, abductors, and adductors, using an isokinetic dynamometer. Medullary lesion, functional levels, and abnormal curvatures of the spine were assessed for MMC participants. The level of spinal cord injury for the majority of the MMC participants was high lumbar and they had scoliosis. MMC showed lower values for forced vital capacity, forced expiratory volume at the first second, forced expiratory flow (25–75%), maximal voluntary ventilation, and isometric peak for shoulder flexors and adductors compared to healthy participants. This indicated a decreased vital capacity, respiratory muscle endurance, and shoulder muscle strength.

Reliability of modified sphygmomanometer for measurement of maximum isometric shoulder muscle strength

BACKGROUND: To evaluate the changes in muscle performance, precise, reliable, and valid methods to assess muscle performance should be applied. Sphygmomanometer is an easily available instrument; it has been used to evaluate the isometric strength of various muscles in various conditions. The reliability of the method can be compromised by insufficient examiner's strength and insufficient stabilization of the sphygmomanometer and participant. The objective of this study was to investigate test–retest reliability of the sphygmomanometer to assess shoulder maximum voluntary isometric contraction (MVIC) against stable surface. METHODS: It was a cross-sectional study design using purposive sampling; 112 healthy individuals were recruited for strength testing. Over 3 days' interval, the MVIC of the shoulder flexor, abductor, extensor, external rotator, and internal rotator muscles strength was evaluated with an aneroid sphygmomanometer against the stable surface in sitting position. RESULTS: The results indicated excellent test–retest reliability (intraclass correlation coefficient = 0.995–0.999) with nonsignificant P value for (0.12) extensor and (0.179) internal rotator and significant P value for (0.01) flexor, (0.000) abductor, and (0.006) external rotator sphygmomanometer to assess the shoulder muscle strength against stable surface. CONCLUSION: A sphygmomanometer was found to have excellent test–retest reliability to assess the MVIC of shoulder muscles.

Isokinetic Characteristics of Amateur Boxer Athletes.

Aim: The kinetic chain of the punch of boxers is characterized by the contribution of the shoulder; however, the isokinetic muscle strength of shoulder’s rotators muscles has not been well studied so far, especially with regards to performance. Therefore, the aim of the present study was (a) to profile the isokinetic muscle strength of rotators of the glenohumeral joint, bilateral (BL), unilateral (UL) and functional ratios in amateur boxers, and (b) to examine the variation of these muscle strength characteristics by performance level.Methods: Forty male amateur Greek boxers from three division levels (elite, n = 22; second division, n = 11; and third division, n = 7), and 10 non-athletes (control group) were tested, using the isokinetic dynamometer Kin-ComTM in the scapular seated position under standard conditions. We examined (i) peak torque (PT) of internal (IR) and external (ER) rotators during concentric (CON) and eccentric (ECC) contractions at low (60°/s), medium (120°/s), and high speed (180°/s), (ii) BL, (iii) UL, and (iv) functional ratios of dominant (D) and non-dominant (ND) limbs.Results: Boxers were stronger than control group in IR and ER at all speeds, and D outscored ND limb (p < 0.05). Elite boxers were stronger than group B and C (p < 0.05); however, when peak torque was expressed in relative to body mass values, these differences were attenuated. The BL ratios for the men athletes were under 10% at 60 and 180°/s, the UL ratios were lower at 60 and higher at 180°/s and significant lower in the dominant limb at all speeds. The functional ratios of IR ECC / ER CON were higher between the control group at all speeds and the ER ECC/IR CON ratios were between 60 and 180°/s, and the two limbs with higher values at 180°/s.Conclusion: Boxers had the strongest dominant limb and their BL ratios were normal at all speeds except of 120°/s ECC. The UL ratios of ECC at 120 and 180°/s of ND were normal, and at the other speeds abnormal due to high IR. In addition, the functional ratios may be related to the kinetic chain of the punch, which in turn correlates with the contribution of ER of both limbs.

A Randomized Controlled Trial on Posture Improvement and Trunk Muscle Strength by Round Shoulder Posture Improvement Exercise

The aim of this article was to examine investigates the effects of posture-improving exercises on round shoulder posture (RSP) and back muscle strength. 35 college students participated in this study and were measured for both shoulder height and muscle strength. After pretest, participants were divided into shoulder stabilization exercise group (SSEG, n1=12), antagonist strength exercise group (ASEG, n2=12), and control group (CG, n3=11). SSEG and ASEG exercised with a trainer 3 times a week for 30 minutes during 4 weeks. After completion of intervention, there was a significant difference in both shoulders and trunk muscle strength is significant difference for SSEG, ASEG and CG. This study has found that strengthening exercise is more effective in RSP reduction. However, it is the opinion of the researchers that the 4 week exercise period was not long enough to achieve significant results for other measurements. Further comparative studies related to the effects of strength exercises on RSP reduction, lung capacity, and trunk muscle strength is necessary.

Effects of an anteroposterior mobilization of the glenohumeral joint in overhead athletes with chronic shoulder pain: A randomized controlled trial

BackgroundPassive oscillatory mobilizations are often employed by physiotherapists to reduce shoulder pain and increase function. However, there is little data about the neurophysiological effects of these mobilizations. ObjectivesTo investigate the initial effects of an anteroposterior (AP) shoulder joint mobilization on measures of pain and function in overhead athletes with chronic shoulder pain. DesignDouble-blind, controlled, within-subject, repeated-measures design. MethodThirty-one overhead athletes with chronic shoulder pain participated. The effects of a 9-min, AP mobilization of the glenohumeral joint were compared with manual contact and no-contact interventions. Self-reported pain, pressure pain threshold (PPT), range of movement (ROM), muscle strength, and disability were measured immediately before and after each intervention. Results/findingsNo significant differences were found among the treatment conditions in any of the variables investigated. A significantly greater mean decrease in self-reported shoulder pain was observed following treatment condition [0.63 (0.12, 1.14); p = 0.01]. PPT at the affected shoulder increased significantly following both the treatment [0.23 (−0.43, 0.02); p = 0.02] and manual contact [0.28 (−0.51, 0.04); p = 0.01] conditions. Shoulder AP joint mobilization also increased PPT at a distal, non-painful site [0.42 (−0.85, 0.01); p = 0.04]. No changes were observed in shoulder ROM or muscle strength. ConclusionsThis study found no superior effects in various pain or function-related outcome measures of a passive oscillatory anteroposterior mobilization applied to the glenohumeral joint compared to manual contact and no-contact interventions in overhead athletes with chronic shoulder pain. Some ability to modulate shoulder pain and local and widespread pain sensitivity was observed in the short term after the passive oscillatory anteroposterior mobilization.

The Effect of External Pelvic Compression on Shoulder and Lumbopelvic Muscle sEMG and Strength of Trunk Extensor During Push Up Plus and Deadlift Exercise

The Effect of External Pelvic Compression on Shoulder and Lumbopelvic Muscle sEMG and Strength of Trunk Extensor During Push Up Plus and Deadlift Exercise

New exercise intervention focusing on compensatory strategy is an effective treatment for patients with massive rotator cuff tear

To examine the effect of compensatory strategies training for patients with massive rotator cuff tear (MRCT). Twenty-four subjects with MRCT were recruited to participate three times shoulder assessments and 12 weeks of intervention. After initial assessment, the subjects were assigned randomly into two groups (CS-TE and TE-CS). CS-TE group was provided compensatory strategies (CS) training followed by 6 weeks of traditional exercise (TE) training. In comparison, TE-CS group took 6 weeks TE training followed by CS. All the participants were arranged to attend the second assessments after completing the first 6 weeks of intervention, and the third assessment at the end of 12 weeks of intervention, including measurements of visual analogue scale (VAS), range of motion (ROM) of shoulder, shoulder pain and disability index (SPADI) questionnaire, shoulder and scapular muscle strength. In addition, scapular kinematics analysis were performed at initial and 2nd assessments. After the first 6 weeks training, CS-TE group showed significant important in motion pain measurement, SPADI score, AROM and strength of local muscles at 6th week; however, TE-CS group only showed significant improvement in SPADI score and flexion of shoulder. Moreover, after 6 weeks of the CS training, TE-CS group showed significant improvement in VAS and strength of compensatory muscles and scapular muscles. Furthermore, significant improvements in scapular control strategies were only found in CS-TE group after completing 6 weeks of intervention, showing significantly increasing scapular external rotation (ER) and posterior tipping (PT). Our results have supported that CS training is an effective treatment for establishing the compensatory strategies after MRCT and regaining the shoulder function by strengthening the humeral head depressors and scapular stabilizers.

Erratum to: What Influence Does Progression of a Nonhealing Rotator Cuff Tear Have on Shoulder Pain and Function?

Jeon and colleagues would like to correct an error found in the Discussion section of the published study “What Influence Does Progression of a Nonhealing Rotator Cuff Tear Have on Shoulder Pain and Function?” A sentence in the Discussion section did not accurately convey the results of the study. The sentence should be: “Patients without healing of the repaired rotator cuff tendon with a decrease in the size of their tear, as measured at 6 months after surgery, experienced better shoulder function and muscle strength from those with increased tear size when followed beyond 6 months.” The authors apologize for the error.