1. We investigated the effect of a long‐term stretching regimen on tissue properties and stretch tolerance human skeletal muscle. 2. Resistance to was measured as torque (in N m) offered by hamstring muscle group during passive knee extension while electromyographic (EMG) activity, joint angle velocity were continuously monitored standardized manoeuvre. Seven healthy subjects tested before after 3 week training period using two separate protocols. Protocol 1 consisted slow at 0.087 rad s‐1...

The aims of this study were to examine the release speed ball in maximal instep kicking with preferred and non-preferred leg relate biomechanical differences observed during action. Seven skilled soccer players performed place kicks nonpreferred leg; their movements filmed at 400 Hz. inter-segmental kinematics kinetics derived. A coefficient restitution between foot was calculated rate force development hip flexors knee extensors measured using a Kin-Com dynamometer. Higher speeds achieved...

This study examines the relation between Na+-K+ transport and metabolism in canine brain. Cerebral oxygen glucose consumption was measured by sagittal sinus outflow technique. Synaptic transmission related blocked pentobarbital 40 mg/kg (EEG flat). Lidocaine an additional 15-20%, presumable restricting leak fluxes reducing demand for transport. Ouabain 20-25% of metabolism. also inhibited sensitive ATPase associated caused a net efflux K+ from cellular compartment as evidenced increasing...

Background Knowledge of injury patterns, an essential step towards prevention, is lacking in youth handball. Aim To investigate if increase handball load associated with increased shoulder rates compared a minor or decrease, and association influenced by scapular control, isometric strength glenohumeral range motion (ROM). Methods 679 players (14–18 years) provided weekly reports on (training competition hours) over 31 weeks using the SMS, phone medical examination system. Handball given...

Vissing, K, Brink, M, Lønbro, S, Sørensen, H, Overgaard, Danborg, Mortensen, J, Elstrøm, O, Rosenhøj, N, Ringgaard, Andersen, JL, and Aagaard, P. Muscle adaptations to plyometric vs. resistance training in untrained young men. J Strength Cond Res 22(6): 1799-1810, 2008-The purpose of this study was compare changes muscle strength, power, morphology induced by conventional strength equal time effort requirements. Young, men performed 12 weeks progressive (CRT, n = 8) or (PT, 7). Tests before...

Fascicle angle (FA) is suggested to increase as a result of fiber hypertrophy and furthermore serve the explanatory link in discrepancy relative adaptations anatomical cross-sectional area (CSA) CSA after resistance training (RT). In contrast RT, effects endurance on FA are unclear. The purpose this study was therefore investigate compare longitudinal either progressive (END, n = 7) or RT (n young untrained men FA, CSA, CSA. Muscle morphological measures included assessment vastus lateralis...

The purpose of the study was to develop a method record intramuscular electromyogram (EMG) from iliopsoas muscle and relate this activity kinetics during soccer place kick. Seven skilled players performed 3 maximal velocity kicks. kicks were filmed with high‐speed camera (400 Hz) EMG recordings obtained 5 muscles kicking leg, including wire electrodes inserted into m. iliopsoas. signals compared which calculated digitised film. results showed hardly any torque reversal about hip joint before...

ABSTRACT Muscle strain injuries are common in sports, with a high recurrence rate and loss of muscle mass. Whether protein supplementation can counteract the detrimental effects during rehabilitation has not been explored. We investigated early acute on volume function. Fifty recreational athletes were enrolled for double‐blinded, randomized controlled trial comparing twice‐daily whey to isocaloric placebo after hamstring or calf injuries. The primary outcome was changes 3 months...

Light- and electronmicroscopic studies of tissue from pathological middle ears revealed in sixteen cases changes typical tympanosclerosis, i.e. collagenous connective poor cells, with hyaline degeneration occasional calcium deposits. one case new formed cartilaginous was present. several specimens we found granulation tissue, which is assumed to represent the incipient stage pathogenesis tympanosclerosis. Electron-microscopy has that degenerative process involves not only but also epidermis...

Because anterior cruciate ligament (ACL) injuries are common in European handball the present study assessed knee joint shear forces to estimate ACL loading six elite female players during a side-cutting maneuver. A pilot investigation three dimensions showed that peak moments occurred sagittal plane at high velocity. Therefore, analysis of movement was performed two using high-speed cinematography, ground reaction forces, and electromyography (EMG). Film force plate data allowed for...

Stair walking is an important functional movement task that may require considerable amounts of muscle strength/power. This study aimed to perform a descriptive biomechanical analysis maximal stair ascent in elderly women and examine the relationship between mechanical function ascending velocity (MAV). Seventeen healthy (age 72.4 ± 6.4) were tested for MAV, multi‐joint counter jumping (CMJ), single‐joint isokinetic/isometric moment. Peak knee joint power during MAV was single independent...

In a retrospective study of long term survival in patients with small cell carcinoma the lung who had been treated purely by surgery, 1820 cancer seen during 15 years 1962-77 were reviewed and reclassified histologically according to TNM system. Of these patients, 924 resections 284 exploratory thoracotomies. Cancer chemotherapy was not used this period radiotherapy given only occasionally as palliative treatment. Seventy seven having pulmonary (8.4%), there six survivors among 71 T1-2,...

Fuglsang, EI, Telling, AS, and Sørensen, H. Effect of ankle mobility segment ratios on trunk lean in the barbell back squat. J Strength Cond Res 31(11): 3024-3033, 2017-The squat is a popular exercise used for both performance enhancing rehabilitation purposes. However, injuries are common, people with history lower pain especially vulnerable. Past studies have shown that higher angles (less forward lean) generate less stress back; thus, it seems appropriate to investigate factors presumed...

The neuromuscular phenomenon postactivation potentiation can possibly be used to increase the rate of force development (RFD) and maximal power (Pmax). Various intervention protocols have been examined with varying results. Maximal using 1 repetition maximum (1RM) in earlier studies lower body positive results, but no investigated on upper body. Using would furthermore eliminate uncertainties when expressing intensity as either numbers RM or percentage 1RM hence emphasize standardization....

The accurate measurement of sport exposure time and injury occurrence is key to effective prevention management. Current measures are limited by their inability identify all types sport‐related injury, narrow scope information, or lack the perspective injured athlete. aims study were evaluate proportion injuries agreement between exposures reported SMS messaging follow‐up telephone part , Phone, medical staff Examination ( SPE x) sports surveillance system when compared obtained trained...

Throwing speed is likely a key determinant of shoulder-specific load. However, it difficult to estimate the throws in handball field-based settings with many players due limitations current technology. Therefore, purpose this study was develop novel method throwing using low-cost accelerometer-based device. Nineteen experienced each performed 25 varying types while we measured acceleration wrist accelerometer and 3D motion capture. Using cross-validation, developed four prediction models...