keyword
MENU ▼
Read by QxMD icon Read
search

Squats

keyword
https://www.readbyqxmd.com/read/28919122/functional-movement-screen-pain-versus-composite-score-and-injury-risk
#1
Joseph A Alemany, Timothy T Bushman, Tyson Grier, Morgan K Anderson, Michelle Canham-Chervak, William J North, Bruce H Jones
OBJECTIVES: The Functional Movement Screen (FMS™) has been used as a screening tool to determine musculoskeletal injury risk using composite scores based on movement quality and/or pain. However, no direct comparisons between movement quality and pain have been quantified. DESIGN: Retrospective injury data analysis. METHODS: Male Soldiers (n=2154, 25.0±1.3years; 26.2±.7kg/m(2)) completed the FMS (scored from 0 points (pain) to 3 points (no pain and perfect movement quality)) with injury data over the following six months...
August 23, 2017: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/28914139/the-influence-of-geometric-design-variables-on-the-kinematic-performance-of-a-surface-guided-total-knee-replacement
#2
Shabnam Pejhan, Eric Bohm, Jan-Mels Brandt, Urs Wyss
OBJECTIVE: Tibiofemoral geometries in a total knee replacement (TKR) affect the performance of an implant during activities of daily living. The specially shaped components of a surface-guided TKR aim to control the tibiofemoral motion, such that a normal pattern of motion is achieved, even at high flexion angles. The purpose of this study was to assess the influence of the design parameters on the kinematic behavior of such an implant. A combination of design variables was determined that resulted in the least deviation from the design kinematic target...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28912725/enhanced-strength-and-sprint-levels-and-changes-in-blood-parameters-during-a-complete-athletics-season-in-800-m-high-level-athletes
#3
Beatriz Bachero-Mena, Fernando Pareja-Blanco, Juan J González-Badillo
The purpose of this study was to analyze changes in sprint, strength, hematological, and hormonal parameters in high-level 800 m athletes during a complete athletics season. Thirteen male athletes of national and international level in 800 m (personal best ranging from 1:43 to 1:58 min:ss) participated in this study. A total of 5 tests were conducted during a complete athletics season. Athletes performed sprint tests (20 and 200 m), countermovement jump (CMJ), jump squat (JS), and full squat (SQ) tests. Blood samples (red and white blood profile) and hormones were collected in test 1 (T1), test 3 (T3), and test 5 (T5)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28912660/effects-of-whole-body-vibration-on-the-neuromuscular-amplitude-of-vastus-lateralis-muscle
#4
Daniel T Borges, Liane B Macedo, Caio A A Lins, Catarina O Sousa, Jamilson S Brasileiro
The aim of this study was to investigate the effects of whole-body vibration (WBV) on vastus lateralis (VL) surface electromyographic (sEMG) amplitude during an isometric semi-squat exercise, using two different frequencies, and to verify the influence of additional filters on the analyzed sEMG signal's characteristics. Forty physically active women were randomly divided into two groups with 20 members each: one group performed an isometric semi-squat exercise at 30 Hz - while the other group performed the same exercise protocol at 50 Hz...
September 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28912650/the-effects-combining-cryocompression-therapy-following-an-acute-bout-of-resistance-exercise-on-performance-and-recovery
#5
William H DuPont, Brek J Meuris, Vincent H Hardesty, Emily C Barnhart, Landon H Tompkins, Morricia J P Golden, Clayton J Usher, Paul A Spence, Lydia K Caldwell, Emily M Post, Matthew K Beeler, William J Kraemer
Compression and cold therapy used separately have shown to reduce negative effects of tissue damage. The combining compression and cold therapy (cryocompression) as a single recovery modality has yet to be fully examined. To examine the effects of cryocompression on recovery following a bout of heavy resistance exercise, recreationally resistance trained men (n =16) were recruited, matched, and randomly assigned to either a cryocompression group (CRC) or control group (CON). Testing was performed before and then immediately after exercise, 60 minutes, 24 hours, and 48 hours after a heavy resistance exercise workout (barbell back squats for 4 sets of 6 reps at 80% 1RM, 90 sec rest between sets, stiff legged deadlifts for 4 sets of 8 reps at 1...
September 2017: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/28905083/assessing-exercises-recommended-for-women-at-risk-of-pelvic-floor-disorders-using-multivariate-statistical-techniques
#6
Tania Tian, Stephanie Budgett, Jackie Smalldridge, Lynsey Hayward, James Stinear, Jennifer Kruger
INTRODUCTION AND HYPOTHESIS: There is a widely held, but untested, belief that certain exercises and activities generate intraabdominal pressure (IAP) that may compromise the function of the pelvic floor muscles. Women with, or at risk of, pelvic floor disorders are advised therefore to refrain from these exercises and activities in order to theoretically protect their pelvic floor. The aim of this study was to compare IAPs generated during exercises of different types that are recommended to women as pelvic floor "safe" with those generated during the corresponding conventional exercises that women are typically cautioned against...
September 13, 2017: International Urogynecology Journal
https://www.readbyqxmd.com/read/28902119/determination-of-vertical-jump-as-a-measure-of-neuromuscular-readiness-and-fatigue
#7
Casey M Watkins, Saldiam R Barillas, Megan A Wong, David C Archer, Ian J Dobbs, Robert G Lockie, Jared W Coburn, Tai T Tran, Lee E Brown
Coaches closely monitor training loads and periodize sessions throughout the season to create optimal adaptations at the proper time. However, only monitoring training loads ignores the innate physiological stress each athlete feels individually. Vertical jump (VJ) is widely used as a measure of lower body power, and has been used in post-match studies to demonstrate fatigue levels. However, no pre-training monitoring via VJ performance has been previously studied. Therefore, the purpose of this study was to determine the sensitivity of VJ as a measure of readiness and fatigue on a daily sessional basis...
September 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28902118/concurrent-training-followed-by-detraining-does-the-resistance-training-intensity-matter
#8
António C Sousa, Daniel A Marinho, Maria H Gil, Mikel Izquierdo, David Rodríguez-Rosell, Henrique P Neiva, Mário C Marques
The aim of the present study was to analyze the training and detraining effects of concurrent aerobic training and resistance training against three different external loads on strength and aerobic variables. Thirty-two men were randomly assigned to four groups: low-load (LLG, n=9), moderate-load (MLG, n=9), high-load (HLG, n=8), and control group (CG, n=6). Resistance training consisted of FS with a low-load (40-55% 1RM), a moderate-load (55-70% 1RM) or a high-load (70-85% 1RM) combined with jump and sprint exercises...
September 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28902116/adding-whole-body-vibration-to-preconditioning-squat-exercise-increases-cycling-sprint-performance
#9
Sébastien Duc, Bent R Rønnestad, William Bertucci
This study investigated the effect of performing a preconditioning exercise with or without whole-body vibration (WBV) on a subsequent cycling sprint performance. Fourteen trained subjects performed two separate test sessions in randomized order. After a warm-up, the preconditioning exercise (body-loaded half squats) was applied: 30-seconds of half-squats with WBV (40 Hz, 2 mm) or 30-seconds of half-squats without WBV with a 10-second all-out sprint performed after one minute. Surface electromyography (EMG) was measured from the vastus medialis, vastus lateralis and gastrocnemius medialis during the sprints...
September 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28900561/effects-of-a-band-loop-on-lower-extremity-muscle-activity-and-kinematics-during-the-barbell-squat
#10
Ryan C A Foley, Brittany D Bulbrook, Duane C Button, Michael W R Holmes
BACKGROUND: Medial knee collapse can signal an underlying movement issue that, if uncorrected, can lead to a variety of knee injuries. Placing a band around the distal thigh may act as a proprioceptive aid to minimize medial collapse of the knee during squats; however, little is known about EMG and biomechanics in trained and untrained individuals during the squat with an elastic band added. HYPOTHESIS/PURPOSE: To investigate the effects of the TheraBand® Band Loop on kinematics and muscle activity of the lower extremity during a standard barbell back squat at different intensities in both trained and untrained individuals...
August 2017: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/28895466/lower-limb-muscle-activity-during-table-tennis-strokes
#11
Yann Le Mansec, Sylvain Dorel, François Hug, Marc Jubeau
This study aimed to compare the muscle activity of lower limbs across typical table tennis strokes. Fourteen high-level players participated in this study in which five typical strokes (backhand top, forehand top, forehand spin, forehand smash, flick) were analysed. Surface electromyography activity (EMG) of eight muscles was recorded (gluteus maximus, biceps femoris, vastus medialis, vastus lateralis, rectus femoris, gastrocnemius medialis, gastrocnemius lateralis, soleus) and normalised to the maximal activity measured during squat jump or isometric maximal voluntary contractions...
September 12, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28894425/analysis-of-wearable-and-smartphone-based-technologies-for-the-measurement-of-barbell-velocity-in-different-resistance-training-exercises
#12
Carlos Balsalobre-Fernández, David Marchante, Eneko Baz-Valle, Iván Alonso-Molero, Sergio L Jiménez, Mario Muñóz-López
The purpose of this study was to analyze the validity, reliability, and accuracy of new wearable and smartphone-based technology for the measurement of barbell velocity in resistance training exercises. To do this, 10 highly trained powerlifters (age = 26.1 ± 3.9 years) performed 11 repetitions with loads ranging 50-100% of the 1-Repetition maximum in the bench-press, full-squat, and hip-thrust exercises while barbell velocity was simultaneously measured using a linear transducer (LT), two Beast wearable devices (one placed on the subjects' wrist -BW-, and the other one directly attached to the barbell -BB-) and the iOS PowerLift app...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28887332/the-cerebro-cardiovascular-response-to-periodic-squat-stand-maneuvers-in-healthy-subjects-a-time-domain-analysis
#13
Sam C Barnes, Naomi Ball, Victoria Joanna Haunton, Thompson G Robinson, Ronney B Panerai
BACKGROUND: Squat-stand maneuvers (SSMs) have been used to improve the coherence of transfer function analysis (TFA) estimates during the assessment of dynamic cerebral autoregulation (dCA). There is a need to understand the influence of peripheral changes resulting from SSMs on cerebral blood flow, which might confound estimates of dCA. METHODS: 29 healthy subjects underwent recordings at rest (5 min standing) and 15 SSMs (0.05Hz). Heart rate (3-lead ECG), end-tidal CO2 (capnography), blood pressure (Finometer), cerebral blood velocity (CBV, transcranial Doppler, MCA) and the angle of the thigh (tilt sensor) were measured continuously...
September 8, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28886062/energy-reserves-mobilization-strategies-of-three-decapod-species
#14
Hernán Javier Sacristán, Yamila Eliana Rodríguez, Nair De Los Angeles Pereira, Laura Susana López Greco, Gustavo Alejandro Lovrich, Analía Verónica Fernández Gimenez
In food deprivation assays, several different responses have been observed in crustaceans. However, studying energy reserves utilization among more than one species during the same starvation period has not yet been performed, particularly to discern whether the responses are due to intrinsic and/or environmental factors. We hypothesize that decapod species with similar feeding habits have the same strategies in the use of energetic reserves during starvation, even though they inhabit different environments...
2017: PloS One
https://www.readbyqxmd.com/read/28885389/load-velocity-relationship-in-variations-of-the-half-squat-exercise-influence-of-execution-technique
#15
Alejandro Pérez-Castilla, Amador García-Ramos, Paulino Padial, Antonio J Morales-Artacho, Belén Feriche
Previous studies have revealed that the velocity of the bar can be used to determine the intensity of different resistance training exercises. However, the load-velocity relationship seems to be exercise dependent. This study aimed to compare the load-velocity relationship obtained from two variations of the half-squat exercise (traditional vs. ballistic) using two execution techniques (eccentric-concentric vs. concentric-only). Twenty men performed a submaximal progressive loading test in four half-squat exercises: eccentric-concentric traditional-squat, concentric-only traditional-squat, countermovement jump (i...
September 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28880052/effects-of-volleyball-plyometric-intervention-program-on-vertical-jumping-ability-in-male-volleyball-players
#16
Dariusz Mroczek, Krzysztof Maćkała, Adam Kawczynski, Edward Superlak, Paweł Chmura, Tomasz Seweryniak, Jan Chmura
BACKGROUND: This study aimed to investigate the effect of a 6-week plyometric exercise training program on the development of lower limb explosive power in terms of vertical jumping ability in university level volleyball players. The study involved 9 male volleyball players from the AWF Wroclaw University Sports Club, with a minimum of 5 years of training and competition experience. The program consisted of various bounds, hops, and jumps in vertical, horizontal, and mixed directions...
September 5, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28877307/a-reconfigurable-multiplanar-in-vitro-simulator-for-real-time-absolute-motion-with-external-and-musculotendon-forces
#17
Joshua T Green, Rena F Hale, Jerome Hausselle, Roger V Gonzalez
Advancements in computational musculoskeletal biomechanics are constrained by a lack of experimental measurement under real-time physiological loading conditions. This paper presents the design, configuration, capabilities, accuracy, and repeatability of The University of Texas at El Paso Joint Load Simulator (UTJLS) by testing four cadaver knee specimens with 47 real-time tests including heel and toe squat maneuvers with and without musculotendon forces. The UTJLS is a musculoskeletal simulator consisting of two robotic manipulators and eight musculotendon actuators...
September 6, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28877186/proof-of-concept-of-a-45-second-cardiorespiratory-fitness-self-test-for-coronary-artery-disease-patients-based-on-accelerometry
#18
Gabriele Papini, Alberto G Bonomi, Wim Stut, Jos J Kraal, Hareld M C Kemps, Francesco Sartor
Cardiorespiratory fitness (CRF) provides important diagnostic and prognostic information. It is measured directly via laboratory maximal testing or indirectly via submaximal protocols making use of predictor parameters such as submaximal [Formula: see text], heart rate, workload, and perceived exertion. We have established an innovative methodology, which can provide CRF prediction based only on body motion during a periodic movement. Thirty healthy subjects (40% females, 31.3 ± 7.8 yrs, 25.1 ± 3.2 BMI) and eighteen male coronary artery disease (CAD) (56...
2017: PloS One
https://www.readbyqxmd.com/read/28872403/reliability-of-squat-movement-competency-screen-in-individuals-with-a-previous-knee-injury
#19
Suzi Edwards, Mark Liberatore
CONTEXT: Movement screens are a common method of assessing movement efficiency either against a specific criterion of segments/joint(s) motion (segmental method), or a summary label of general quality of the whole movement (overall method). While not as commonly utilized within clinical practice as the segmental method, the overall method is less time consuming to perform and more reliable. OBJECTIVES: The aim of this study was to assess the reliability of the "overall" method approach during a squat in individuals with a previous knee joint injury...
September 5, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/28872379/influence-of-different-inertial-loads-on-basic-training-variables-during-the-flywheel-squat-exercise
#20
Rafael Sabido, Jose Luis Hernández-Davó, Gabriel T Pereyra-Gerber
PURPOSE: This study aimed to analyse the effects of different inertial loads on power production and power maintenance), as well as the number of sessions required for proper familiarization during the flywheel quarter-squat. METHODS: Twenty-four high-level handball players attended four testing sessions consisting of 4 sets of 10 repetitions using 4 different inertial loads (0.025, 0.050, 0.075 and 0.100 kg·m(2)). In addition, a fifth set of 15 repetitions was performed...
September 5, 2017: International Journal of Sports Physiology and Performance
keyword
keyword
45400
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"