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https://www.readbyqxmd.com/read/29775886/sprint-interval-training-sit-substantially-reduces-depressive-symptoms-in-major-depressive-disorder-mdd-a-randomized-controlled-trial
#1
Alice Minghetti, Oliver Faude, Henner Hanssen, Lukas Zahner, Markus Gerber, Lars Donath
Continuous aerobic exercise training (CAT) is considered a complementary treatment option in patients with major depressive disorder (MDD). Intermittent exercise training protocols, such as sprint interval training (SIT) have gained increasing popularity, but no studies on depressive symptoms following SIT in patients with MDD are available. Fifty-nine in-patients with MDD were randomly assigned to a SIT or CAT group. Medication was counterbalanced in both intervention arms. Both intervention groups received 3 weekly training sessions for 4-weeks (12 sessions in total)...
May 8, 2018: Psychiatry Research
https://www.readbyqxmd.com/read/29771824/psychological-and-behavioral-responses-to-interval-and-continuous-exercise
#2
Matthew J Stork, Martin J Gibala, Kathleen A Martin Ginis
PURPOSE: To compare psychological responses to, and preferences for, moderate-intensity continuous training (MICT), high-intensity interval training (HIIT), and sprint interval training (SIT) among inactive adults; and to investigate the relationships between affect, enjoyment, exercise preferences, and subsequent exercise behavior over a 4-wk follow-up period. METHODS: Thirty inactive men and women (21.23±3.81 y), inexperienced with HIIT or SIT, completed three trials of cycle ergometer exercise in random order on separate days: MICT (45min continuous; ~70-75% of heart rate maximum (HRmax)); HIIT (10x1 min bouts at ~85-90%HRmax with 1-min recovery periods); and SIT (3x20-s "all-out" sprints with 2-min recovery periods)...
May 16, 2018: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29769828/the-effect-of-half-time-re-warm-up-duration-on-intermittent-sprint-performance
#3
Takuma Yanaoka, Kyoko Kashiwabara, Yuta Masuda, Jumpei Yamagami, Kuran Kurata, Shun Takagi, Masashi Miyashita, Norikazu Hirose
The purpose of the present study was to investigate the effect of different durations of half-time re-warm up (RW) on intermittent sprint performance. Using a randomized crossover design, 13 healthy men performed three trials, which consisted of two, 40-min intermittent exercises separated by a 15-min half-time. Half-time interventions were 15 min of seated rest (Control), 7 min of cycling at 70% of maximal heart rate (HRmax ) (7 min RW), and 3 min of cycling at 70% of HRmax (3 min RW). The second 40-min intermittent exercise as an exercise performance test was the Cycling Intermittent-Sprint Protocol (CISP), which consisted of 10 s of rest, 5 s of maximal sprint, and 105 s of low-intensity exercise at 50% of VO2max , with the cycles repeated over the 40-min duration...
June 2018: Journal of Sports Science & Medicine
https://www.readbyqxmd.com/read/29768643/effects-of-resistance-training-and-combined-training-program-on-repeated-sprint-ability-in-futsal-players
#4
Julio Torres-Torrelo, David Rodríguez-Rosell, Ricardo Mora-Custodio, Fernando Pareja-Blanco, Juan Manuel Yañez-García, Juan José González-Badillo
The purpose of this study was to compare the effects of 6 weeks resistance training (RT) with combined RT and loaded change of direction (CD) exercise on muscle strength and repeated sprint ability (RSA) in futsal players. Thirty-four players (age: 23.7±4.1 years; height: 1.77±0.06 m; body mass: 74.1±8.2 kg) were randomly assigned into three groups: full squat group (SG, n=12), combined full squat and CD group (S+CDG, n=12), and control group (CG, n=10). The RT for SG consisted of full squat with low-load (~45-60% 1RM) and low-volume (2-3 sets and 4-6 repetitions), whereas the S+CDG performed the same RT program combined with loaded CD (2-5 sets of 10 s)...
May 16, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29764731/how-much-is-enough-in-rehabilitation-high-running-workloads-following-lower-limb-muscle-injury-delay-return-to-play-but-protect-against-subsequent-injury
#5
Jordan Stares, Brian Dawson, Peter Peeling, Michael Drew, Jarryd Heasman, Brent Rogalski, Marcus Colby
OBJECTIVES: Examine the influence of rehabilitation training loads on return to play (RTP) time and subsequent injury in elite Australian footballers. DESIGN: Prospective cohort study. METHODS: Internal (sessional rating of perceived exertion: sRPE) and external (distance, sprint distance) workload and lower limb non-contact muscle injury data was collected from 58 players over 5 seasons. Rehabilitation periods were analysed for running workloads and time spent in 3 rehabilitation stages (1: off-legs training, 2: non-football running, 3: group football training) was calculated...
April 10, 2018: Journal of Science and Medicine in Sport
https://www.readbyqxmd.com/read/29764612/the-effect-of-a-novel-square-profile-hand-rim-on-propulsion-technique-of-wheelchair-tennis-players
#6
Sonja de Groot, Femke Bos, Jorine Koopman, Aldo E Hoekstra, Riemer J K Vegter
The purpose of this study was to investigate the effect of a square-profile hand rim (SPR) on propulsion technique of wheelchair tennis players. Eight experienced wheelchair tennis players performed two sets of three submaximal exercise tests and six sprint tests on a wheelchair ergometer, once with a regular rim (RR) and once with a SPR. Torque and velocity were measured continuously and power output and timing variables were calculated. No significant differences were found in propulsion technique between the RR and SPR during the submaximal tests...
September 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29761520/predicting-lysine-malonylation-sites-of-proteins-using-sequence-and-predicted-structural-features
#7
Ghazaleh Taherzadeh, Yuedong Yang, Haodong Xu, Yu Xue, Alan Wee-Chung Liew, Yaoqi Zhou
Malonylation is a recently discovered post-translational modification (PTM) in which a malonyl group attaches to a lysine (K) amino acid residue of a protein. In this work, a novel machine learning model, SPRINT-Mal, is developed to predict malonylation sites by employing sequence and predicted structural features. Evolutionary information and physicochemical properties are found to be the two most discriminative features whereas a structural feature called half-sphere exposure provides additional improvement to the prediction performance...
May 14, 2018: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/29756632/effects-of-push-off-ability-and-handcycle-type-on-handcycling-performance-in-able-bodied-participants
#8
Ingrid Kouwijzer, Carla F J Nooijen, Kees van Breukelen, Thomas W J Janssen, Sonja de Groot
OBJECTIVE: To assess the effects on handcycling performance and physiological responses, of: (i) making a closed chain by comparing handcycling in a recumbent bike with 2-feet footrest (closed chain) with handcycling with 1 footrest (partial closed chain) and without a footrest (no closed chain); (ii) equipment by comparing handcycling in a recumbent bike with a kneeling bike. METHODS: Ten able-bodied participants performed submaximal exercise and sprint tests, once in a knee-ling bike and 3 times on a recumbent: 2-feet support, 1-foot support and without foot support...
May 14, 2018: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/29747080/potential-relationship-between-passive-plantar-flexor-stiffness-and-sprint-performance-in-sprinters
#9
Chieri Takahashi, Tadashi Suga, Hiromasa Ueno, Yuto Miyake, Mitsuo Otsuka, Masafumi Terada, Akinori Nagano, Tadao Isaka
OBJECTIVE: To investigate the relationship between passive planter flexor stiffness and sprint performance in sprinters. DESIGN: Cross-sectional study. PARTICIPANTS: Fifty well-trained male sprinters (age: 20.7 ± 1.9 years, height: 175.6 ± 4.9 cm, weight: 66.7 ± 5.1 kg) were participated in this study. Their best personal times in a 100-m sprint ranged from 10.22 to 11.86 s (mean, 11.12 ± 0.43 s). METHODS: Passive stiffness of the plantar flexors measured using a dynamometer system...
April 23, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29746505/the-effects-of-short-term-detraining-and-retraining-on-physical-fitness-in-elite-soccer-players
#10
Chang Hwa Joo
PURPOSE: The aim of this study was to examine the effects of aerobic high-intensity training with reduced volume and training cessation on body composition and physical fitness after the end of season and the time required to recapture physical fitness with intensified retraining following two weeks of detraining in elite soccer players. METHOD: Twenty male semi-professional soccer players participated in this study. The soccer players were assigned to either a group that completed high-intensity aerobic training (HAT, n = 10) or to a detraining and retraining group (DHAT, n = 10) for a 5-week period immediately after the end of the season...
2018: PloS One
https://www.readbyqxmd.com/read/29746385/strength-and-sprint-time-changes-in-response-to-repeated-shuttles-between-the-wickets-during-batting-in-cricket
#11
Candice Jo-Anne Christie, Bronwyn Sheppard, David Goble, Lee Pote, Timothy D Noakes
Christie CJ, Sheppard B, Goble D, Pote L, and Noakes TD. Strength and sprint time changes in response to repeated shuttles between the wickets during batting in cricket. J Strength Cond Res XX(X): 000-000, 2018-No studies have investigated the impact of repeated sprints between the wickets on lower-limb strength and sprint performance. Therefore, the purpose of this study was to assess changes in knee extensor (EXT) and flexor (FLEX) strength after repeated sprints between the wickets and to relate these to changes in sprint times...
May 2, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29745801/cold-water-immersion-after-training-sessions-effects-on-fiber-type-specific-adaptations-in-muscle-k-transport-proteins-to-sprint-interval-training-in-men
#12
Danny Christiansen, David John Bishop, James R Broatch, Jens Bangsbo, Michael John McKenna, Robyn M Murphy
Effects of regular use of cold-water immersion (CWI) on fiber type-specific adaptations in muscle K+ transport proteins to intense training, along with their relationship to changes in mRNA levels after the first training session, were investigated in humans. Nineteen recreationally-active men (24{plus minus}6 y, 79.5{plus minus}10.8 kg, 44.6{plus minus}5.8 mL∙kg-1 ∙min-1 ) completed six weeks of sprint-interval cycling either without (passive rest; CON) or with training sessions followed by CWI (15 min at 10{degree sign}C; COLD)...
May 10, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/29745738/effect-of-prior-fatiguing-sport-specific-exercise-on-field-hockey-passing-ability
#13
Enzo Hollville, Vincent Le Croller, Yoshihiro Hirasawa, Rémi Husson, Giuseppe Rabita, Franck Brocherie
PURPOSE: This study aimed to evaluate the effect of multiple sets of repeated-sprint ability (RSA) induced fatigue on subsequent passing skill performance among field hockey. METHODS: Ten elite U-21 male field hockey players performed five sets of a combination of RSA test (6 × 20 m - 20 s of passive recovery) followed by a 1-min passing skill test (passing reception with subsequent passes at a pre-designed target). Fastest sprint time and cumulated sprint time for RSA test; total number of balls played, targeted and passing accuracy (number of balls targeted / total number of balls played) for passing skill test; heart rate (HR), blood lactate concentration ([La-]) and rating of perceived exertion (RPE) were collected throughout the protocol...
May 10, 2018: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29743825/creatine-electrolyte-supplementation-improves-repeated-sprint-cycling-performance-a-double-blind-randomized-control-study
#14
Daniel L Crisafulli, Harsh H Buddhadev, Lorrie R Brilla, Gordon R Chalmers, David N Suprak, Jun G San Juan
Background: Creatine supplementation is recommended as an ergogenic aid to improve repeated sprint cycling performance. Furthermore, creatine uptake is increased in the presence of electrolytes. Prior research examining the effect of a creatine-electrolyte (CE) supplement on repeated sprint cycling performance, however, did not show post-supplementation improvement. The purpose of this double blind randomized control study was to investigate the effect of a six-week CE supplementation intervention on overall and repeated peak and mean power output during repeated cycling sprints with recovery periods of 2 min between sprints...
2018: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/29740564/physical-performance-tests-a-relationship-of-risk-factors-for-muscle-injuries-in-elite-level-male-football-players
#15
Kjell Svensson, Marie Alricsson, Marcus Olausson, Suzanne Werner
The purpose of the present study was to investigate whether there is a relationship between the outcome of preseason physical performance tests and the risk of sustaining lower extremity muscle injuries within the same season, in male football players at elite level. This is a cohort study of a male football team (63 players) from the first league in Swe-den. The football players are prospectively followed, in terms of muscle injuries of the lower extremity during five seasons between 2010 and 2014. All muscle injuries were evaluated and diagnosed with ultraso-nography...
April 2018: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29740560/comparison-of-technical-and-physical-activities-between-8-vs-8-and-11-vs-11-games-in-young-korean-soccer-players
#16
Seong Hwan Oh, Chang Hwa Joo
The aims of this study were to examine the differences in technical aspects and physical demands between small-size games (SSG; 8 vs. 8) and regular-size games (RSG; 11 vs. 11) in young Korean soccer players. Seventy-nine young soccer players from 6 teams (U-12) volunteered to participate in the study. The players completed 4 games (2 SSG, 62×51 m, and 2 RSG, 80×54 m) in 2 days. Each game was filmed to evaluate technical actions. Physical demand variables were measured using global positioning system technology...
April 2018: Journal of Exercise Rehabilitation
https://www.readbyqxmd.com/read/29738892/effect-of-short-term-cold-water-immersion-on-muscle-pain-sensitivity-in-elite-track-cyclists
#17
Sebastian Klich, Igor Krymski, Kamil Michalik, Adam Kawczyński
OBJECTIVE: To determine the effect of short-term cold-water immersion (CWI) on muscle pain sensitivity after maximal anaerobic power training in track cyclists. DESIGN: Repeated measures. SETTING: University Laboratory. PARTICIPANTS: 12 elite sprint track cyclists (age 24,75 ± 4,23 years). MAIN OUTCOME MEASURES: PPT measurements were made on dominant lower extremity (right) in 20 reference points, including anterior thigh muscles, posterior thigh muscles and posterior cuff muscles...
May 1, 2018: Physical Therapy in Sport
https://www.readbyqxmd.com/read/29738681/upper-and-lower-body-responses-to-repeated-cyclical-sprints
#18
Israel Halperin, Brandon W Collins, Michael Monks, Chris T Compton, Joseph D Yetman, Angela Loucks-Atkinson, Fabien Basset, Duane C Button
PURPOSE: To compare the physiological and perceptual responses of the upper and lower body to all-out cyclical sprints with short or long rest periods between sprints. METHODS: Ten recreationally trained males completed four 10 × 10 s sprint protocols in a randomized order: upper body with 30 s and 180 s of rest between sprints, and lower body with 30 s and 180 s of rest between sprints. Additionally, maximum voluntary contractions (MVC) were measured at pre-sprint and post-sprints 5 and 10...
May 8, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/29735541/multiplex-quantification-identifies-novel-exercise-regulated-myokines-cytokines-in-plasma-and-in-glycolytic-and-oxidative-skeletal-muscle
#19
Hannah Little, Stefanie Y Tan, Francesca Cali, Susana Rodriguez, Xia Lei, Andrew Wolfe, Christopher Hug, G William Wong
Exercise is known to confer major health benefits, but the underlying mechanisms are not well understood. The systemic effects of exercise on multi-organ systems are thought to be partly due to myokines/cytokines secreted by skeletal muscle. The extent to which exercise alters cytokine expression and secretion in different muscle fiber types has not been systematically examined.  Here, we assessed changes in 66 mouse cytokines in serum, and in glycolytic (plantaris) and oxidative (soleus) muscles, in response to sprint, endurance, or chronic wheel running...
May 7, 2018: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/29733694/contribution-of-central-and-peripheral-adaptations-to-changes-in-vo-sub-2-sub-max-following-four-weeks-of-sprint-interval-training
#20
James P Raleigh, Matthew D Giles, Hashim Islam, Matthew William Nelms, Robert F Bentley, Joshua H Jones, J Alberto Neder, Kristen Boonstra, Joe Quadrilatero, Craig A Simpson, Michael E Tschakovsky, Brendon J Gurd
The current study examined the contribution of central and peripheral adaptations to changes in maximal oxygen uptake (VO<sub>2</sub>max) following sprint interval training (SIT). Twenty-three males completed four weekly SIT sessions (8 x 20 second cycling bouts at ~170% of work rate at VO<sub>2</sub>max, 10 second recovery) for four weeks. Following completion of training, the relationship between changes in VO<sub>2</sub>max and changes in central (cardiac output) and peripheral (a-vO<sub>2</sub>diff, muscle capillary density, oxidative capacity, fibre-type distribution) adaptations was determined in all participants using correlation analysis...
May 7, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
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