journal
MENU ▼
Read by QxMD icon Read
search

International Journal of Sports Medicine

journal
https://www.readbyqxmd.com/read/28388783/the-reliability-and-validity-of-the-3-min-all-out-cycling-critical-power-test
#1
James Wright, Stewart Bruce-Low, Simon A Jobson
Research suggests that critical power (CP) can be estimated from a single 3-min bout of all-out cycling. The purpose of this study was to investigate the reliability and validity of the 3-min all-out cycling test when carried out at a constant cadence (isokinetic) and against a fixed resistance (linear). 12 participants completed 8 tests: 1) a ramp test; 2-4) 3 fixed power tests to calculate CP and W' using the 1/time mathematical model; 5-8) four 3-min all-out tests to calculate EP and WEP; 2 isokinetic and 2 linear tests...
April 7, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28388782/high-intensity-intermittent-exercise-and-autonomic-modulation-effects-of-different-volume-sessions
#2
Carlos Iván Mesa Castrillón, Rodolfo Augusto Travagin Miranda, Carolina Cabral-Santos, Lais Manata Vanzella, Bruno Rodrigues, Luiz Carlos Marques Vanderlei, Fábio Santos Lira, Eduardo Zapaterra Campos
The aim of this study was to compare heart rate variability (HRV) recovery after 2 sessions of high-intensity intermittent exercise at different volumes (1.25 km [HIIE1.25] and 2.5 km [HIIE2.5]). 13 participants determined their maximal aerobic speed (MAS) and completed 2 HIIE (1:1 at 100% MAS) trials. The heart rate was recorded before and after each session. HRV indicators were calculated according to time (RMSSD and SDNN) and frequency (LF, HF and LF/HF ratio) domains. SDNN and RMSSD presented effect of test (F=20...
April 7, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28388781/effects-of-hypertrophy-exercise-in-bone-turnover-markers-and-structure-in-growing-male-rats
#3
Elena Nebot, Virginia A Aparicio, Peter Pietschmann, Daniel Camiletti-Moirón, Garyfallia Kapravelou, Reinhold G Erben, Rosario Martínez, Cristina Sánchez-González, Jesús M Porres, Juan Llopis, María López-Jurado, Pilar Aranda
The benefits of exercise on bone density, structure and turnover markers are rather controversial. The present study aimed to examine the effects of hypertrophy exercise (HE) on bone. 20 male Wistar rats were randomly distributed in 2 experimental groups, one performing HE and the other untrained over 12 weeks. Plasma parameters, bone mineral content, bone mineral density (BMD), structure, and trabecular and cortical microarchitecture were measured. Femur Mg content was 12% higher (p<0.001), whereas femur length, dry weight, P content, and aminoterminal propeptides of type I procollagen were lower in the HE group (all, p<0...
April 7, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28388780/effect-of-footwear-on-dynamic-stability-during-single-leg-jump-landings
#4
Bradley J Bowser, William C Rose, Robert McGrath, Jilian Salerno, Joshua Wallace, Irene S Davis
Barefoot and minimal footwear running has led to greater interest in the biomechanical effects of different types of footwear. The effect of running footwear on dynamic stability is not well understood. The purpose of this study was to compare dynamic stability and impact loading across 3 footwear conditions; barefoot, minimal footwear and standard running shoes. 25 injury free runners (21 male, 4 female) completed 5 single-leg jump landings in each footwear condition. Dynamic stability was assessed using the dynamic postural stability index and its directional components (mediolateral, anteroposterior, vertical)...
April 7, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28388779/aerobic-exercise-decreases-lung-inflammation-by-ige-decrement-in-an-ova-mice-model
#5
Deborah Camargo Hizume-Kunzler, Flavia R Greiffo, Bárbara Fortkamp, Gabriel Ribeiro Freitas, Juliana Keller Nascimento, Thayse Regina Bruggemann, Leonardo Melo Avila, Adenir Perini, Franciane Bobinski, Morgana Duarte Silva, Fernanda Rocha Lapa, Rodolfo Paula Vieira, Verônica Vargas Horewicz, Adair Roberto Soares Dos Santos, Kelly Cattelan Bonorino
Aerobic exercise (AE) reduces lung function decline and risk of exacerbations in asthmatic patients. However, the inflammatory lung response involved in exercise during the sensitization remains unclear. Therefore, we evaluated the effects of exercise for 2 weeks in an experimental model of sensitization and single ovalbumin-challenge. Mice were divided into 4 groups: mice non-sensitized and not submitted to exercise (Sedentary, n=10); mice non-sensitized and submitted to exercise (Exercise, n=10); mice sensitized and exposed to ovalbumin (OVA, n=10); and mice sensitized, submitted to exercise and exposed to OVA (OVA+Exercise, n=10)...
April 7, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28340491/comparison-of-skillful-vs-less-skilled-young-soccer-players-on-anthropometric-maturation-physical-fitness-and-time-of-practice
#6
Márcio André de Gouvêa, Edilson Serpeloni Cyrino, João Valente-Dos-Santos, Alex Silva Ribeiro, Danilo Rodrigues Pereira da Silva, David Ohara, Manuel J Coelho-E-Silva, Enio Ricardo Vaz Ronque
This study compared maturation, body composition and physical fitness between youth soccer athletes with different technical skills levels. Sixty-two young athletes (11-17 years) were categorized dichotomously in more skilled (n=31) and less skilled (n=31) groups based on 3 specific technical tests (Dribbling Speed Test [DST], Shuttle Dribble Test [SDT] and Slalom Dribble Test [SLDT]). Chronological and skeletal age, time of practice, body composition and 4 physical fitness tests were performed for comparisons...
March 24, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28315285/effects-of-plyometric-training-on-physical-fitness-in-prepuberal-soccer-athletes
#7
Yassine Negra, Helmi Chaabene, Senda Sammoud, Raja Bouguezzi, Mohamed Aymen Abbes, Younés Hachana, Urs Granacher
This study aimed at examining the effects of plyometric training on stable (SPT) vs. unstable (UPT) surfaces on physical fitness in prepuberal soccer players. Male athletes were randomly assigned to SPT (n=18; age=12.7±0.2 years) or UPT (n=16; age=12.2±0.5 years). Both groups conducted 3 regular soccer training sessions per week combined with either 2 SPT or UPT sessions. Assessment of jumping ability (countermovement jump [CMJ], and standing long jump [SLJ]), speed (10-m, 20-m, 30-m sprint), agility (Illinois agility test [IAT]), and balance (stable [SSBT], unstable [USBT] stork balance test; stable [SYBT], unstable [UYBT] Y balance test) was conducted pre-and post-training...
March 17, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28315284/the-potential-of-established-fitness-cut-off-points-for-monitoring-women-with-fibromyalgia-the-al-%C3%A3-ndalus-project
#8
José Castro-Piñero, Virginia A Aparicio, Fernando Estévez-López, Inmaculada C Álvarez-Gallardo, Milkana Borges-Cosic, Alberto Soriano-Maldonado, Manuel Delgado-Fernández, Víctor Segura-Jiménez
The aim of the present study was to determinate whether fitness cut-off points discriminate the severity of major fibromyalgia symptoms and health-related quality of life. Additionally, we investigated which American Colleague of Rheumatology (ACR) fibromyalgia criteria (1990 vs. modified 2010) better discriminate fibromyalgia symptomatology. A total of 488 women with fibromyalgia and 200 non-fibromyalgia (control) women participated. All participants underwent both the 1990 and the modified 2010 ACR preliminary criteria (hereinafter 1990c and m-2010c, respectively)...
March 17, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28303562/association-between-actn3-r577x-polymorphism-and-trunk-flexibility-in-2-different-cohorts
#9
Naoki Kikuchi, Hirofumi Zempo, Noriyuki Fuku, Haruka Murakami, Mikako Sakamaki-Sunaga, Takanobu Okamoto, Koichi Nakazato, Motohiko Miyachi
α-Actinin-3 (ACTN3) R577X polymorphism is associated with muscular strength and power. This study was performed to investigate the association between ACTN3 R577X polymorphisms and flexibility as another component of fitness in 2 cohorts. Cohort 1 consisted of 208 men and 568 women (ages 23-88), while Cohort 2 consisted of 529 men and 728 women (ages 23-87). All participants were recruited from the Tokyo metropolitan area and underwent a battery of tests to assess their grip strength and sit-and-reach flexibility...
March 16, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28255967/aerobic-and-anaerobic-swimming-force-evaluation-in-one-single-test-session-for-young-swimmers
#10
Filipe Antônio de Barros Sousa, Natalia Almeida Rodrigues, Leonardo Henrique Dalcheco Messias, Jair Borges Queiroz, Fulvia Barros Manchado-Gobatto, Claudio Alexandre Gobatto
This study aims to propose and validate the tethered swimming lactate minimum test (TSLacmin) estimating aerobic and anaerobic capacity in one single test session, using force as measurement parameter. 6 male and 6 female young swimmers (age=15.7±1.1 years; height=173.3±9.5 cm; weight=66.1±9.5 kg) performed 4 sessions comprising i) an all-out 30 s test and incremental test (TSLacmin); ii) 30 min of tethered swimming at constant intensity (2 sessions); iii) free-swimming time trials used to calculate critical velocity...
March 2, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28255966/effect-of-resistance-exercise-on-arterial-stiffness-during-the-follicular-and-luteal-phases-of-the-menstrual-cycle
#11
Takanobu Okamoto, Ryota Kobayashi, Mikako Sakamaki-Sunaga
Acute high-intensity resistance exercise increases arterial stiffness. Changes in blood concentrations of estrogen and progesterone associated with the menstrual cycle affect the degree of arterial stiffness. Therefore, high-intensity resistance exercise may affect arterial stiffness differently depending on the phase of the menstrual cycle. The purpose of this study was to investigate the effects of different phases of the menstrual cycle on arterial stiffness after one session of resistance exercise. The participants were 9 eumenorrheic females (21...
March 2, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28249346/increased-training-volume-improves-bone-density-and-cortical-area-in-adolescent-football-players
#12
Ian Varley, David C Hughes, Julie P Greeves, William D Fraser, Craig Sale
Habitual football participation has been shown to be osteogenic, although the specific volume of football participation required to cause bone adaptations are not well established. The aim of the present study is to investigate tibial bone adaptations in response to 12 weeks of increased training volume in elite adolescents who are already accustomed to irregular impact training. 99 male adolescent elite footballers participated (age 16±0 y; height 1.76±0.66 m; body mass 70.2±8.3 kg). Tibial scans were performed using peripheral quantitative computed tomography immediately before and 12 weeks after an increase in football training volume...
March 1, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28255965/high-intensity-exercise-in-men-with-type-1-diabetes-and-mode-of-insulin-therapy
#13
Andrzej Gawrecki, Dariusz Naskret, Pawel Niedzwiecki, Anna Duda-Sobczak, Aleksandra Araszkiewicz, Dorota Zozulinska-Ziolkiewicz
The purpose of this study was to evaluate the impact of high intensity exercise on glucose levels and risk of metabolic decompensation in males with type 1 diabetes (T1D), depending on the method of insulin administration. The study comprised 29 males (aged 25.3±5.1 years; duration of diabetes 10.3±3.2 years) treated with continuous subcutaneous insulin infusion (CSII) or multiple daily insulin injections (MDI). Treadmill exercise test was performed twice in each patient until subjective exhaustion as maximum according to the Borg scale...
April 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28249345/mechanical-alterations-during-800-m-self-paced-track-running
#14
Olivier Girard, Gregoire P Millet, Jean-Paul Micallef
We assessed the time course of running mechanical alterations during an 800-m. On a 200-m indoor track, 18 physical education students performed an 800-m self-paced run. Once per lap, ground reaction forces were measured by a 5-m-long force platform system, and used to determine running kinetics/kinematics and spring-mass characteristics. Compared with 100 m (19.4±1.8 km.h(-1)) running velocity progressively decreased at 300, 500 m but levelled-off at 700 m marks (-5.7±4.6, -10.4±8.3, and -9.1±13...
April 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28249344/psychotropic-drug-use-in-recreational-scuba-divers-and-its-effect-on-severe-narcosis
#15
Thierry Krummel, Alicia Thiery, Marion Villain, Bernard Schittly, Benoit Brouant
Recreational scuba diving is no longer reserved for young healthy individuals, and as a result, medical drug consumption is on the rise in the diving population. Due to the possible potentiation of nitrogen narcosis by psychotropic drugs, the latter are hence discouraged and are subject to contraindications for practice. However, there are no available experimental data to support this theoretical assumption. The objective of this study is to investigate whether psychotropic drug users are more at risk of severe narcosis...
April 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28219107/chronic-blood-pressure-reductions-and-increments-in-plasma-nitric-oxide-bioavailability
#16
RANDOMIZED CONTROLLED TRIAL
Crisieli M Tomeleri, Alexandre J Marcori, Alex Silva Ribeiro, Aline Mendes Gerage, Camila de Souza Padilha, Durcelina Schiavoni, Mariana F Souza, Jerry L Mayhew, Matheus Amarante do Nascimento, Danielle Venturini, Decio Sabbatini Barbosa, Edilson Serpeloni Cyrino
This study analyzed the effects of 12 weeks of resistance training (RT) on resting blood pressure (BP) and plasma levels of nitric oxide metabolites (NOx) in pre- and hypertensive older women, and evaluated the relationship between these 2 parameters. Thirty-five older women (68.2±5.7 years, 70.0±14.4 kg, 157.1±6.4 cm, 28.3±5.0 kg.m(-2)) were randomly allocated into a training group (TG; n=17), which performed a 12-week RT program, and a control group (CG; n=18), which did not perform any physical exercise...
April 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28219106/reliability-and-validity-of-a-self-paced-cardiopulmonary-exercise-test-in-post-mi-patients
#17
Lauren Ann Jenkins, Alexis Mauger, Jane Fisher, James Hopker
A self-paced peak oxygen uptake (V̇O2peak) test (SPV) has been shown to produce higher V̇O2peak values compared to standard cardiopulmonary exercise tests (sCPET), but has not been tested on any clinical population. This study aimed to assess the reliability of the SPV in a healthy population (study 1), and the validity and reliability of the SPV in post-myocardial infarction (post-MI) patients (study 2). For study 1, 25 healthy participants completed 3 SPV's. For study 2, 28 post-MI patients completed one sCPET and 2 SPV's...
April 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28219105/effects-of-resistance-training-volume-on-mmps-in-circulation-muscle-and-adipose-tissue
#18
Ivo Vieira de Sousa Neto, Ramires Alsamir Tibana, Dahan da Cunha Nascimento, Denis César Leite Vieira, Joao Luiz Quagliotti Durigan, Guilherme Borges Pereira, James Wilfred Navalta, Rita de Cássia Marqueti, Jonato Prestes
The aim of this study was to investigate the effects of different resistance training (RT) volumes on MMP activity in skeletal muscle, visceral adipose tissue and circulation. 21 Wistar rats were randomly divided into 3 groups (n=7 per group): sedentary control (SC); RT with 4 ladder climbs (RT-4; 50, 75, 90 and 100% of their maximal carrying capacity) and RT with 8 ladder climbs (RT-8 with 2 sets for each load). The 8-week RT consisted of climbing a 1.1-m vertical ladder with weights secured to the animals' tails...
April 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28219104/captopril-does-not-potentiate-post-exercise-hypotension-a-randomized-crossover-study
#19
RANDOMIZED CONTROLLED TRIAL
Andréia Cristiane Carrenho Queiroz, Julio Cesar Silva Sousa, Natan Daniel Silva, Eleonora Tobaldini, Katia Coelho Ortega, Edilamar Menezes de Oliveira, Patricia Chakur Brum, Nicola Montano, Decio Mion, Taís Tinucci, Claudia Lucia de Moraes Forjaz
To evaluate whether captopril (3×50 mg/day) potentiates post-resistance exercise hypotension (PREH) in hypertensives (HT), 12 HT men received captopril and placebo for 4 weeks each in a double-blinded, randomized-crossover design. On each therapy, subjects underwent 2 sessions: Control (C - rest) and Resistance Exercise (RE - 7 exercises, 3 sets to moderate fatigue, 50% of 1 RM -repetition maximum). Measurements were taken before and after 30-60 min (Post1) and 7 h (Post2), and ambulatory blood pressure (BP) was monitored for 24 h...
April 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28219103/digoxin-induces-cardiac-hypertrophy-without-negative-effects-on-cardiac-function-and-physical-performance-in-trained-normotensive-rats
#20
Claodete Hasselstrom Neves, Ramires Alsamir Tibana, Jonato Prestes, Fabricio Azevedo Voltarelli, Andreo Fernando Aguiar, Gustavo Augusto Ferreira Mota, Sergio Luiz Borges de Sousa, Andre Soares Leopoldo, Ana Paula Lima Leopoldo, Andre Mueller, Danilo Henrique Aguiar, James Wilfred Navalta, Mario Mateus Sugizaki
Cardiotonic drugs and exercise training promote cardiac inotropic effects, which may affect training-induced cardiac adaptations. This study investigated the effects of long-term administration of digoxin on heart structure and function, and physical performance of rats submitted to high-intensity interval training (HIIT). Male Wistar rats, 60 days old, were divided into control (C), digoxin (DIGO), trained (T), and trained with digoxin (TDIGO). Digoxin was administered by gavage (30 µg/kg/day) for 75 days...
April 2017: International Journal of Sports Medicine
journal
journal
20288
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"