keyword
MENU ▼
Read by QxMD icon Read
search

Squats

keyword
https://www.readbyqxmd.com/read/29326905/neuromuscular-features-in-sprinters-with-cerebral-palsy-case-studies-based-on-paralympic-classification
#1
Diego Antunes, Mateus Rossato, Rafael Lima Kons, Raphael Luiz Sakugawa, Gabriela Fischer
Despite the evolution of runner performance in athletes with cerebral palsy (CP), little is known about neuromuscular parameters of sprinters from different classes, especially related to power output, muscular imbalances and asymmetry indexes in lower limbs. The aim of this study was to assess muscle power, muscular imbalance and asymmetry in sprinters with CP. Four male sprinters with CP (age, 18 to 27 years; body mass, 58.5 to 72.8 kg; height, 161.5 to 174 cm) classified as T38, T37, T36, T35 according to International Paralympic Committee functional classification, performed vertical counter movement jump and squat jump on force plate and isokinetic torque evaluations in both limbs...
December 2017: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29326497/is-the-modified-harris-hip-score-valid-and-responsive-instrument-for-outcome-assessment-in-the-indian-population-with-pertrochanteric-fractures
#2
Karthik Vishwanathan, Keyur Akbari, Amit J Patel
Introduction: The original Harris hip score (HHS) does not contain ability to perform squatting and sitting cross legged as items in the questionnaire and hence a need was felt to modify the Harris hip score so that it could stay relevant in functional assessment of Indian patients in the rural setting. Validity, responsiveness and ceiling floor effect of the Harris hip score after internal fixation of pertrochanteric fracture has not been previously described. The objective of the study was to investigate construct validity, responsiveness and ceiling floor effects of the modified Harris hip score (mHHS)...
March 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29324578/training-volume-not-frequency-indicative-of-maximal-strength-adaptations-to-resistance-training
#3
Ryan J Colquhoun, Christopher M Gai, Danielle Aguilar, Daniel Bove, Jeffrey Dolan, Andres Vargas, Kaylee Couvillion, Nathaniel D M Jenkins, Bill I Campbell
PURPOSE: To compare the effects of a high- versus a moderate-training frequency on maximal strength and body composition. METHODS: 28 young, healthy resistance-trained males were randomly assigned to either: 3x/week (3x; n=16) or 6x/week (6x; n=12). Dependent variables (DVs) assessed at baseline and after the 6-week training intervention included: squat 1RM (SQ1RM), bench press 1RM (BP1RM), deadlift 1RM (DL1RM), powerlifting total (PLT), Wilk's coefficient (WC), fat-free mass (FFM) and fat mass (FM)...
January 5, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29322711/high-prevalence-of-hypovitaminosis-d-in-patients-presenting-with-proximal-muscle-weakness-a-sub-himalayan-study
#4
Jatinder Mokta, Balraj, Kiran Mokta, Asha Ranjan, Ivan Joshi, Mahak Garg
Background: Hypovitaminosis D has emerged as a major public health problem and 25-50% of patients encountered in clinical practice are deficient in vitamin D. This study was conducted to estimate the prevalence of hypovitaminosis D among patients presenting with proximal muscle weakness. Study Design: It was a cross-sectional study done on patients ≥18 years presenting in outdoor clinic from May 2008 to April 2013, with difficulty in standing and going up stairs/ diffuse musculoskeletal pains...
November 2017: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/29318166/lower-limb-symmetry-comparison-of-muscular-power-between-dominant-and-nondominant-legs-in-healthy-young-adults-associated-with-single-leg-dominant-sports
#5
Alex Vaisman, Rodrigo Guiloff, Juan Rojas, Iris Delgado, David Figueroa, Rafael Calvo
Background: Achieving a symmetrical power performance (difference <15%) between lower limbs is generally recommended during sports rehabilitation. However, athletes in single-leg-dominant sports, such as professional soccer players, could develop significant asymmetry between their dominant and nondominant legs, such that symmetry does not act as a viable comparison. Purpose: To (1) compare maximal muscular power between the dominant and nondominant legs in healthy young adults, (2) evaluate the effect of a single-leg-dominant sport activity performed at the professional level, and (3) propose a parameter of normality for maximal power difference in the lower limbs of this young adult population...
December 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29316273/pilot-project-physiologic-responses-to-a-high-intensity-active-video-game-with-copd-patients-tools-for-home-rehabilitation
#6
Andrée-Anne Parent, Vincent Gosselin-Boucher, Marilyn Houle-Peloquin, Claude Poirier, Alain-Steve Comtois
INTRODUCTION: Chronic Obstructive Pulmonary Disease (COPD) is a respiratory condition that causes a significant deterioration of the quality of life. However, exercise can improve the quality of life for COPD patients and it is for this reason previous study observed the effects of active video games to increase exercise. Using motion capture devices with short bursts of exercise never been tried with COPD patients. OBJECTIVES: The objective was to observe the feasibility of using this device safely and easily with COPD patients...
January 8, 2018: Clinical Respiratory Journal
https://www.readbyqxmd.com/read/29315164/effects-of-strength-training-on-postpubertal-adolescent-distance-runners
#7
Richard C Blagrove, Louis P Howe, Emily J Cushion, Adam Spence, Glyn Howatson, Charles R Pedlar, Philip R Hayes
PURPOSE: Strength training activities have consistently been shown to improve running economy (RE) and neuromuscular characteristics, such as force producing ability and maximal speed, in adult distance runners. However the effects on adolescent (<18 years) runners remains elusive. This randomized control trial aimed to examine the effect of strength training on several important physiological and neuromuscular qualities associated with distance running performance. METHODS: Participants (n=25, 13 female, 17...
January 8, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29311763/the-acute-effects-of-a-multi-ingredient-pre-workout-supplement-on-resting-energy-expenditure-and-exercise-performance-in-recreationally-active-females
#8
Michael Cameron, Clayton L Camic, Scott Doberstein, Jacob L Erickson, Andrew R Jagim
Background: The use of dietary supplements to improve performance is becoming increasingly popular among athletes and fitness enthusiasts. Unfortunately, there is a tremendous lack of research being done regarding female athletes and the use of sport supplements. The purpose of this study was to examine the acute effects of multi-ingredient pre-workout supplement (MIPS) ingestion on resting metabolism and exercise performance in recreationally-active females. Methods: Fifteen recreationally-active females participated in a randomized, double-blind, placebo controlled study...
2018: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29305450/in-vivo-three-dimensional-kinematics-of-normal-knees-during-different-high-flexion-activities
#9
K Kono, T Tomita, K Futai, T Yamazaki, S Tanaka, H Yoshikawa, K Sugamoto
AIMS: In Asia and the Middle-East, people often flex their knees deeply in order to perform activities of daily living. The purpose of this study was to investigate the 3D kinematics of normal knees during high-flexion activities. Our hypothesis was that the femorotibial rotation, varus-valgus angle, translations, and kinematic pathway of normal knees during high-flexion activities, varied according to activity. MATERIALS AND METHODS: We investigated the in vivo kinematics of eight normal knees in four male volunteers (mean age 41...
January 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29300147/relationships-between-highly-skilled-golfers-clubhead-velocity-and-force-producing-capabilities-during-vertical-jumps-and-an-isometric-mid-thigh-pull
#10
Jack E T Wells, Andrew C S Mitchell, Laura H Charalambous, Iain M Fletcher
Whilst previous research has highlighted significant relationships between golfers' clubhead velocity (CHV) and their vertical jump height and maximum strength, these field-based protocols were unable to measure the actual vertical ground reaction force (vGRF) variables that may correlate to performance. The aim of this study was to investigate relationships between isometric mid-thigh pull (IMTP), countermovement jump (CMJ), squat jump (SJ) and drop jump (DJ) vGRF variables and CHV in highly skilled golfers...
January 4, 2018: Journal of Sports Sciences
https://www.readbyqxmd.com/read/29284166/functional-screening-tests-interrelationships-and-ability-to-predict-vertical-jump-performance
#11
Irineu Loturco, Lucas Adriano Pereira, Ronaldo Kobal, Cesar Cavinato Cal Abad, William Komatsu, Ronaldo Cunha, Gustavo Arliani, Benno Ejnisman, Alberto de Castro Pochini, Fábio Yuzo Nakamura, Moises Cohen
There are several methods used in sports science to identify asymmetries in athletes, given their purported relevance to injury prevention and performance optimization. We aimed to verify whether asymmetries provided by isokinetic assessments, jump tests, and tensiomyography (TMG) are associated with each other, and whether their respective functional indices are related to jumping ability. TMG parameters, unilateral and bilateral squat-jump (SJ) and countermovement-jump (CMJ) performances, and peak torque in knee-extension and flexion with angular velocities of 60o/s and 300o/s for twenty-four soccer players were retained for analyses...
December 28, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29283929/the-effect-of-three-different-maximal-concentric-velocity-squat-protocols-on-mapk-phosphorylation-and-endocrine-responses
#12
Rebecca A Kudrna, Andrew C Fry, Justin X Nicoll, Phillip M Gallagher, Michael R Prewitt
The purpose of this study was to determine the effect of three different back squat protocols on intra-cellular signaling, endocrine responses, and power fatigue. Nine recreationally trained males (X±SD; age: 21.4±0.6yrs; height: 177.8±5.1cm; weight: 78.7±9.7kg), completed three maximal concentric velocity squat protocols in a randomized order. Testing protocols consisted of 5 sets of 10 repetitions at 30% of 1RM; 5 sets of 5 repetitions at 70% of 1RM; and 5 sets of 3 repetitions at 90% of 1RM. Average system power for each set was obtained with a tethered external dynamometer...
December 27, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29283690/how-fast-is-a-horizontal-squat-jump
#13
Pierre Samozino, Jean Romain Riviere, Jérémy Rossi, Jean-Benoit Morin, Pedro Jimenez-Reyes
Velocity strength training requires exercise modalities allowing athletes to reach very high movement velocity, which is limited during vertical movements involving body weight. PURPOSE: Our aim was to quantify the mechanical outputs developed during horizontal squat jumps, and notably the movement velocity, in comparison to vertical squat jumps with and without loads. METHODS: Thirteen healthy male athletes performed squat jumps without additional loads (SJ0), with a load of ~60% of body mass (SJ60) and during horizontal squat jumps performed lying down on a roller device with (AHSJ) and without (HSJ) a rubber band assistance...
December 28, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29281133/the-impact-of-strength-level-on-adaptations-to-combined-weightlifting-plyometric-and-ballistic-training
#14
Lachlan P James, G Gregory Haff, Vincent G Kelly, Mark Connick, Ben Hoffman, Emma M Beckman
The purpose of this investigation was to determine if the magnitude of adaptation to integrated ballistic training is influenced by initial strength level. Such information is needed to inform resistance training guidelines for both higher- and lower-level athlete populations. To this end, two groups of distinctly different strength levels (stronger: one-repetition-maximum (1RM) squat = 2.01 ± 0.15 kg. BM-1 ; weaker: 1.20 ± 0.20 kg. BM-1 ) completed 10 weeks of resistance training incorporating weightlifting derivatives, plyometric actions and ballistic exercises...
December 27, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29259807/weaker-lower-extremity-muscle-strength-predicts-traumatic-knee-injury-in-youth-female-but-not-male-athletes
#15
Sofia Ryman Augustsson, Eva Ageberg
Background: The role of lower extremity (LE) muscle strength for predicting traumatic knee injury in youth athletes is largely unknown. Aims: The aim was to investigate the influence of LE muscle strength on traumatic knee injury in youth female and male athletes. Methods: 225 athletes (40% females) from sport senior high schools in Sweden were included in this case-control study. The athletes recorded any traumatic knee injury that had occurred during their high-school period in a web-based injury form...
2017: BMJ Open Sport & Exercise Medicine
https://www.readbyqxmd.com/read/29259281/effects-of-resistance-exercise-on-endothelial-progenitor-cell-mobilization-in-women
#16
Fernando Ribeiro, Ilda P Ribeiro, Ana C Gonçalves, Alberto J Alves, Elsa Melo, Raquel Fernandes, Rui Costa, Ana B Sarmento-Ribeiro, José A Duarte, Isabel M Carreira, Sarah Witkowski, José Oliveira
This study aimed to determine the effect of a single bout of resistance exercise at different intensities on the mobilization of circulating EPCs over 24 hours in women. In addition, the angiogenic factors stromal cell-derived factor 1 (SDF-1α), vascular endothelial growth factor (VEGF), hypoxia-inducible factor 1-alpha (HIF-1α) and erythropoietin (EPO) were measured as potential mechanisms for exercise-induced EPCs mobilization. Thirty-eight women performed a resistance exercise session at an intensity of 60% (n = 13), 70% (n = 12) or 80% (n = 13) of one repetition maximum...
December 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29248350/effectiveness-of-kinesiology-tape-on-sports-performance-abilities-in-athletes-a-systematic-review
#17
REVIEW
Jennifer C Reneker, Lisa Latham, Ryan McGlawn, Matthew R Reneker
OBJECTIVE: Establish the effectiveness of kinesiology tape (KT) on sports performance abilities compared to that of other tapes or no tape with consideration to the application methodology, timeframe, and outcome measurement. METHODS: PubMed, Embase, and PEDro databases were systematically searched. The following inclusion criteria were applied: 1) participants were healthy athletes, 2) compared any brand of dynamic KT to other types of tape (sham or therapeutic) and/or no tape, 3) measured some construct of functional sports performance, 4) involved randomization...
October 9, 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29248190/thigh-calf-contact-parameters-for-six-high-knee-flexion-postures-onset-maximum-angle-total-force-contact-area-and-center-of-force
#18
David C Kingston, Stacey M Acker
In high knee flexion, contact between the posterior thigh and calf is expected to decrease forces on tibiofemoral contact surfaces, therefore, thigh-calf contact needs to be thoroughly characterized to model its effect. This study measured knee angles and intersegmental contact parameters in fifty-eight young healthy participants for six common high flexion postures using motion tracking and a pressure sensor attached to the right thigh. Additionally, we introduced and assessed the reliability of a method for reducing noise in pressure sensor output...
November 28, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29247985/slow-movement-resistance-training-using-body-weight-improves-muscle-mass-in-the-elderly-a-randomized-controlled-trial
#19
S Tsuzuku, T Kajioka, H Sakakibara, K Shimaoka
To examine the effect of a 12-week slow movement resistance training using body weight as a load (SRT-BW) on muscle mass, strength, and fat distribution in healthy elderly people. Fifty-three men and 35 women aged 70 years old or older without experience in resistance training participated, and they were randomly assigned to a SRT-BW group or control group. The control group did not receive any intervention, but participants in this group underwent a repeat measurement 12 weeks later. The SRT-BW program consisted of three different exercises (squat, tabletop push-up, and sit-up), which were designed to stimulate anterior major muscles...
December 16, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29245511/southern-high-latitude-squat-lobsters-ii-description-of-i-uroptychus-i-i-macquariae-i-sp-nov-from-macquarie-ridge
#20
Kareen E Schnabel, Ingo Burghardt, Shane T Ahyong
Squat lobsters have only recently been recorded from the Macquarie Ridge, which extends south between New Zealand and Antarctica. Among these, Uroptychus insignis (Henderson, 1885) was recorded for the first time outside the western Indian Ocean, exhibiting only subtle morphological differences. Reexamination of the Macquarie Ridge and Indian Ocean specimens attributed to U. insignis using morphological and molecular data revealed the Macquarie Ridge form to represent a separate species. Subtle but consistent morphological differences are evident and partial CO1 sequence data indicates that the specimens collected on Macquarie Ridge differ from those collected in the Indian Ocean by more than 7%...
November 23, 2017: Zootaxa
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"