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https://www.readbyqxmd.com/read/29120983/assessing-differences-in-anthropometric-and-fitness-characteristics-between-police-academy-cadets-and-incumbent-officers
#1
Robin Orr, J Jay Dawes, Rodney Pope, Joseph Terry
The physical fitness of police officers must be developed in new cadets and sustained in incumbent officers. The aims of this study were to profile and compare the anthropometric and fitness characteristics of police academy cadets and incumbent officers of varying ages from a single police force. Retrospective data for 84 police academy cadets (♂=66, mean age=27.96±5.73 yrs; ♀=18, mean age=30.50±5.76 yrs) and 80 incumbent police officers (♂=73, mean age=39.43±8.28 yrs; ♀=7, mean age=37.86±3.67 yrs) were compiled...
November 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29053943/inflammation-status-of-healthy-young-men-initial-and-specific-responses-to-resistance-training
#2
Johanna K Ihalainen, Heikki Peltonen, Göran Paulsen, Juha P Ahtiainen, Ritva S Taipale, Mari Hämäläinen, Eeva Moilanen, Antti A Mero
PURPOSE: Our primary aim was to study the effects of a 4 wk preparatory resistance training (RT) period followed by 12 wks of two specific RT protocols (either hypertrophic-strength, HS, or strength-hypertrophy-power, SHP, training) on inflammation markers and the possible relationship of the changes in abdominal fat and lean mass to the changes in inflammation status. METHODS: A total of 82 healthy men were included in the study. Maximal concentric leg press strength (1RM), total body lean mass, total body and abdominal fat mass, circulating high-sensitivity C-reactive protein (hs-CRP), interleukin-6 (IL-6), interleukin-1 receptor antagonist (IL-1ra), monocyte chemoattractant protein 1 (MCP-1), and selected adipocytokines (resistin, adiponectin and leptin) concentrations were measured before (PRE) and after 4 (wk4) and 16 weeks (wk16) of RT...
October 20, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29016481/auto-regulated-exercise-selection-training-regimen-produces-small-increases-in-lean-body-mass-and-maximal-strength-adaptations-in-strength-trained-individuals
#3
Jacob T Rauch, Carlos Ugrinowitsch, Christopher I Barakat, Michael R Alvarez, David L Brummert, Daniel W Aube, Andrew S Barsuhn, Daniel Hayes, Valmor Tricoli, Eduardo O De Souza
The purpose of this investigation was to compare the effects of auto-regulatory exercise selection (AES) vs. fixed exercise selection (FES) on muscular adaptations in strength-trained individuals. Seventeen males (Mean ± SD; age = 24 ± 5.45 years; height = 180.3 ± 7.54cm, lean body mass [LBM] 66.44 ± 6.59kg; squat and bench press 1RM: body mass ratio 1.87, 1.38 respectively) were randomly assigned into either AES or FES. Both groups trained three times a week for 9 weeks. AES self-selected the exercises for each session, whereas FES was required to perform exercises in a fixed order...
October 7, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28719669/a-whey-protein-based-multi-ingredient-nutritional-supplement-stimulates-gains-in-lean-body-mass-and-strength-in-healthy-older-men-a-randomized-controlled-trial
#4
RANDOMIZED CONTROLLED TRIAL
Kirsten E Bell, Tim Snijders, Michael Zulyniak, Dinesh Kumbhare, Gianni Parise, Adrian Chabowski, Stuart M Phillips
Protein and other compounds can exert anabolic effects on skeletal muscle, particularly in conjunction with exercise. The objective of this study was to evaluate the efficacy of twice daily consumption of a protein-based, multi-ingredient nutritional supplement to increase strength and lean mass independent of, and in combination with, exercise in healthy older men. Forty-nine healthy older men (age: 73 ± 1 years [mean ± SEM]; BMI: 28.5 ± 1.5 kg/m2) were randomly allocated to 20 weeks of twice daily consumption of either a nutritional supplement (SUPP; n = 25; 30 g whey protein, 2...
2017: PloS One
https://www.readbyqxmd.com/read/28699923/the-effects-of-moderate-versus-high-load-resistance-training-on-muscle-growth-body-composition-and-performance-in-collegiate-women
#5
Jason M Cholewa, Fabricio E Rossi, Christopher MacDonald, Amy Hewins, Samantha Gallo, Ashley Micenski, Layne Norton, Bill I Campbell
Twenty young women (20.3+1.5 years, 164+6 cm, 68.7+13.8 kg) without prior structured resistance training experience were recruited for this study. Body composition (BodPod), compartmental water (Bioelectrical Impedance), 7-site skinfold, and arm and thigh CSA were assessed pre- and post- 8 week training. Performance testing consisted of vertical jump, 3 kg chest pass initial velocity, squat 1RM and overhead press 1RM. Following 2 weeks of familiarization training, subjects were matched for body composition and relative squat strength, and randomly assigned to either a high- (HL: n=10; 4 sets of 5-7 repetitions) or moderate-load (ML: n=10; 2 sets of 10-14 repetitions) group that completed 6-7 exercises per day performed to momentary muscular failure...
June 2, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28527156/the-effect-of-aerobic-or-aerobic-strength-exercise-on-body-composition-and-functional-capacity-in-patients-with-bmi-%C3%A2-35-after-bariatric-surgery-a-randomized-control-trial
#6
Alireza Hassannejad, Alireza Khalaj, Mohammad Ali Mansournia, Mastaneh Rajabian Tabesh, Zahra Alizadeh
BACKGROUND: Although previous studies suggested that bariatric surgery is the most effective and sustainable treatment method for morbid obesity in long term, but without changing in lifestyle, maintaining optimal weight loss is almost impossible. METHODS: Sixty morbid obese patients (BMI ≥ 35) were evaluated before and after 12 weeks of bariatric surgery in order to compare the impact of two different exercise programs on body composition and functional capacity outcomes...
November 2017: Obesity Surgery
https://www.readbyqxmd.com/read/28399016/the-effects-of-beef-chicken-or-whey-protein-post-workout-on-body-composition-and-muscle-performance
#7
Matthew H Sharp, Ryan P Lowery, Kevin A Shields, Jason R Lane, Jocelyn L Gray, Jeremy M Partl, Daniel W Hayes, Gabriel J Wilson, Chase A Hollmer, Julie R Minivich, Jacob M Wilson
The purpose of this study was to determine the effects of post-workout consumption of beef protein isolate (Beef), hydrolyzed chicken protein (Chx) or whey protein concentrate (WPC), compared to a control on lean mass and strength during 8 weeks of resistance training. Forty-one males and females were randomized into four groups: WPC (m=5, f=5; Age (yrs)=19 ± 2, Height (cm)=171 ± 10, Mass (kg)= 74.60 ± 14.19), Beef (m=5, f=5; Age (yrs)=22 ± 4, Height (cm)=170 ± 7, Mass (kg)=70.13 ± 8.16), ChxC(m=5, f=6; Age (yrs)=21 ± 2, Height (cm)=169 ± 9, Mass (kg)=74...
April 7, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28327461/muscle-strength-is-impaired-in-men-but-not-in-women-living-with-hiv-taking-antiretroviral-therapy
#8
Vitor Hf Oliveira, Susana L Wiechmann, Argéria Ms Narciso, Allison R Webel, Rafael Deminice
BACKGROUND: There is evidence that HIV Antiretroviral Therapy adverse effects may be sex-dependent, but data examing these sex differences in muscle strength is scarce. Our aim was to compare dynamic and isokinetic parameters of muscle strength between HIV-infected men and women to HIV-uninfected subjects. METHODS: In this cross-sectional study, muscle strength was evaluated in 44 HIV-infected (20 men, 24 women) and 25 age-, race- and body mass index-matched HIV-uninfected subjects (11 men, 14 women)...
March 22, 2017: Antiviral Therapy
https://www.readbyqxmd.com/read/28326351/effects-of-low-dose-ibuprofen-supplementation-and-resistance-training-on-bone-and-muscle-in-postmenopausal-women-a-randomized-controlled-trial
#9
Whitney R D Duff, Saija A Kontulainen, Darren G Candow, Julianne J Gordon, Riley S Mason, Regina Taylor-Gjevre, Bindu Nair, Michael Szafron, Adam D G Baxter-Jones, Gordon A Zello, Philip D Chilibeck
PURPOSE: To compare the effects of nine months of exercise training and ibuprofen supplementation (given immeditately after exercise sessions) on bone and muscle in postmenopausal women. METHODS: In a double-blind randomized trial, participants (females: n = 90, mean age 64.8, SD 4.3 years) were assigned (computer generated, double blind) to receive supervised resistance training or stretching 3 days/week, and ibuprofen (400 mg, post-exercise) or placebo (i...
December 2016: Bone Reports
https://www.readbyqxmd.com/read/28292885/heavy-strength-training-improves-running-and-cycling-performance-following-prolonged-submaximal-work-in-well-trained-female-athletes
#10
Olav Vikmoen, Bent R Rønnestad, Stian Ellefsen, Truls Raastad
The purpose of this study was to investigate the effects of adding heavy strength training to female duathletes' normal endurance training on both cycling and running performance. Nineteen well-trained female duathletes (VO2max cycling: 54 ± 3 ml∙kg(-1)∙min(-1), VO2max running: 53 ± 3 ml∙kg(-1)∙min(-1)) were randomly assigned to either normal endurance training (E, n = 8) or normal endurance training combined with strength training (E+S, n = 11). The strength training consisted of four lower body exercises [3 × 4-10 repetition maximum (RM)] twice a week for 11 weeks...
March 2017: Physiological Reports
https://www.readbyqxmd.com/read/27918670/improvement-of-ice-hockey-players-on-ice-sprint-with-combined-plyometric-and-strength-training
#11
Torstein E Dæhlin, Ole C Haugen, Simen Haugerud, Ivana Hollan, Truls Raastad, Bent R Rønnestad
BACKGROUND: Combined plyometric and strength training has previously been suggested as a strategy to improve skating performance in ice hockey players. However, the effects of combined plyometric and strength training have not previously been compared with the effects of strength training only. PURPOSE: To compare the effects of combined plyometric and strength training on ice hockey players' skating sprint performance with those of strength training only. METHODS: Eighteen participants were randomly assigned to 2 groups that completed 5 strength-training sessions/wk for 8 wk...
August 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/27857693/heavy-resistance-training-in-hypoxia-enhances-1rm-squat-performance
#12
Mathew W H Inness, François Billaut, Emily J Walker, Aaron C Petersen, Alice J Sweeting, Robert J Aughey
Purpose: To determine if heavy resistance training in hypoxia (IHRT) is more effective at improving strength, power, and increasing lean mass than the same training in normoxia. Methods: A pair-matched, placebo-controlled study design included 20 resistance-trained participants assigned to IHRT (FIO2 0.143) or placebo (FIO2 0.20), (n = 10 per group). Participants were matched for strength and training. Both groups performed 20 sessions over 7 weeks either with IHRT or placebo. All participants were tested for 1RM, 20-m sprint, body composition, and countermovement jump pre-, mid-, and post-training and compared via magnitude-based inferences...
2016: Frontiers in Physiology
https://www.readbyqxmd.com/read/27717738/influence-of-relative-strength-on-functional-independence-of-patients-with-spinal-cord-injury
#13
Frederico Ribeiro Neto, Patrícia Guanais, Guilherme H Lopes, Elisa Dornelas, Daniela de Campos Barbetta, Alessandra C Coutinho, Carlos Wellington Gonçalves, Rodrigo Rodrigues Gomes Costa
OBJECTIVE: To investigate the influence of strength values and fat mass on functional independence of men with different spinal cord injury (SCI) levels. DESIGN: Cross-sectional study. SETTING: Hospital network. PARTICIPANTS: Men with SCI (N=45). INTERVENTIONS: Subjects were assessed in functional independence scales, a 1 repetition maximum (1RM) test, and body composition to detect absolute and relative strength: 1RM divided by body mass (BM) and lean body mass (LBM), respectively...
June 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/27358494/one-week-of-bed-rest-leads-to-substantial-muscle-atrophy-and-induces-whole-body-insulin-resistance-in-the-absence-of-skeletal-muscle-lipid-accumulation
#14
Marlou L Dirks, Benjamin T Wall, Bas van de Valk, Tanya M Holloway, Graham P Holloway, Adrian Chabowski, Gijs H Goossens, Luc J C van Loon
Short (<10 days) periods of muscle disuse, often necessary for recovery from illness or injury, lead to various negative health consequences. The current study investigated mechanisms underlying disuse-induced insulin resistance, taking into account muscle atrophy. Ten healthy, young males (age: 23 ± 1 years; BMI: 23.0 ± 0.9 kg · m(-2)) were subjected to 1 week of strict bed rest. Prior to and after bed rest, lean body mass (dual-energy X-ray absorptiometry) and quadriceps cross-sectional area (CSA; computed tomography) were assessed, and peak oxygen uptake (VO2peak) and leg strength were determined...
October 2016: Diabetes
https://www.readbyqxmd.com/read/27174923/neither-load-nor-systemic-hormones-determine-resistance-training-mediated-hypertrophy-or-strength-gains-in-resistance-trained-young-men
#15
Robert W Morton, Sara Y Oikawa, Christopher G Wavell, Nicole Mazara, Chris McGlory, Joe Quadrilatero, Brittany L Baechler, Steven K Baker, Stuart M Phillips
We reported, using a unilateral resistance training (RT) model, that training with high or low loads (mass per repetition) resulted in similar muscle hypertrophy and strength improvements in RT-naïve subjects. Here we aimed to determine whether the same was true in men with previous RT experience using a whole-body RT program and whether postexercise systemic hormone concentrations were related to changes in hypertrophy and strength. Forty-nine resistance-trained men (23 ± 1 yr, mean ± SE) performed 12 wk of whole-body RT...
July 1, 2016: Journal of Applied Physiology
https://www.readbyqxmd.com/read/27135468/the-effect-of-strength-training-on-performance-indicators-in-distance-runners
#16
Kris Beattie, Brian P Carson, Mark Lyons, Antonia Rossiter, Ian C Kenny
Beattie, K, Carson, BP, Lyons, M, Rossiter, A, and Kenny, IC. The effect of strength training on performance indicators in distance runners. J Strength Cond Res 31(1): 9-23, 2017-Running economy (RE) and velocity at maximal oxygen uptake (VV[Combining Dot Above]O2max) are considered to be the best physiological performance indicators in elite distance runners. In addition to cardiovascular function, RE and VV[Combining Dot Above]O2max are partly dictated by neuromuscular factors. One technique to improve neuromuscular function in athletes is through strength training...
January 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/26887327/exercise-training-improves-vascular-function-in-adolescents-with-type-2-diabetes
#17
RANDOMIZED CONTROLLED TRIAL
Louise H Naylor, Elizabeth A Davis, Rachelle J Kalic, Niru Paramalingam, Mary B Abraham, Timothy W Jones, Daniel J Green
The impact of exercise training on vascular health in adolescents with type 2 diabetes has not been previously studied. We hypothesized that exercise training would improve micro- and macrovascular health in adolescents with type 2 diabetes. Thirteen adolescents (13-21 years, 10F) with type 2 diabetes were recruited from Princess Margaret Hospital. Participants were randomized to receive either an exercise program along with standard clinical care (n = 8) or standard care alone (n = 5). Those in the intervention group received 12 weeks of gym-based, personalized, and supervised exercise training...
February 2016: Physiological Reports
https://www.readbyqxmd.com/read/26842665/eight-weeks-of-pre-and-postexercise-whey-protein-supplementation-increases-lean-body-mass-and-improves-performance-in-division-iii-collegiate-female-basketball-players
#18
RANDOMIZED CONTROLLED TRIAL
Lemuel W Taylor, Colin Wilborn, Michael D Roberts, Andrew White, Kristen Dugan
We examined if 8 weeks of whey protein (WP) supplementation improved body composition and performance measures in NCAA Division III female basketball players. Subjects were assigned to consume 24 g WP (n = 8; age, 20 ± 2 years; height, 170 ± 6 cm; weight, 66.0 ± 3.1 kg) or 24 g of maltodextrin (MD) (n = 6; age, 21 ± 3 years; height, 169 ± 6 cm; weight, 68.2 ± 7.6 kg) immediately prior to and following training (4 days/week anaerobic and resistance training) for 8 weeks. Prior to (T1) and 8 weeks following supplementation (T2), subjects underwent dual X-ray absorptiometry body composition assessment as well as performance tests...
March 2016: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/26733764/in-a-single-blind-matched-group-design-branched-chain-amino-acid-supplementation-and-resistance-training-maintains-lean-body-mass-during-a-caloric-restricted-diet
#19
RANDOMIZED CONTROLLED TRIAL
Wesley David Dudgeon, Elizabeth Page Kelley, Timothy Paul Scheett
BACKGROUND: Athletes and active adults many times have the goal of improving/maintaining fitness while losing weight and this is best achieved by caloric restriction in combination with exercise. However, this poses a risk for lean tissue loss, which can limit performance. Thus, the purpose of this study was to determine the effectiveness of a branched-chain amino acid (BCAA) supplement, in conjunction with heavy resistance training and a carbohydrate caloric-restricted "cut diet" on body composition and muscle fitness...
2016: Journal of the International Society of Sports Nutrition
https://www.readbyqxmd.com/read/26407995/preserved-skeletal-muscle-protein-anabolic-response-to-acute-exercise-and-protein-intake-in-well-treated-rheumatoid-arthritis-patients
#20
Ulla Ramer Mikkelsen, Kasper Dideriksen, Mads Bisgaard Andersen, Anders Boesen, Nikolai Mølkjær Malmgaard-Clausen, Inge Juul Sørensen, Peter Schjerling, Michael Kjær, Lars Holm
INTRODUCTION: Rheumatoid arthritis (RA) is often associated with diminished muscle mass, reflecting an imbalance between protein synthesis and protein breakdown. To investigate the anabolic potential of both exercise and nutritional protein intake we investigated the muscle protein synthesis rate and anabolic signaling response in patients with RA compared to healthy controls. METHODS: Thirteen RA patients (age range 34-84 years; diagnosed for 1-32 years, median 8 years) were individually matched with 13 healthy controls for gender, age, BMI and activity level (CON)...
September 25, 2015: Arthritis Research & Therapy
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