Read by QxMD icon Read

1RM Lean Mass

Frederico Ribeiro Neto, Patrícia Guanais, Guilherme H Lopes, Elisa Dornelas, Daniela de Campos Barbetta, Alessandra C B Coutinho, Carlos Wellington Gonçalves, Rodrigo Rodrigues Gomes Costa
OBJECTIVE: The study aimed to investigate the influence of strength values and fat mass on functional independence of men with different spinal cord injury levels (SCI). DESIGN: Cross-sectional study; Setting: SARAH Rehabilitation Hospital Network - Brasilia, Brazil. PARTICIPANTS: Forty-five men with SCI were enrolled in the study. INTERVENTIONS: Subjects were assessed in functional independence scales, one maximum repetition test (1RM) and body composition to detect absolute and relative strength: 1RM divided by body mass (BM) and lean body mass (LBM)...
October 4, 2016: Archives of Physical Medicine and Rehabilitation
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
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
Kris Beattie, Brian P Carson, Mark Lyons, Antonia Rossiter, Ian C Kenny
Running economy (RE) and velocity at maximal oxygen uptake (VV˙O 2 max) are considered to be the best physiological performance indicators in elite distance runners. In addition to cardiovascular function, RE and VV˙O2 max are partly dictated by neuromuscular factors. One technique to improve neuromuscular function in athletes is through strength training. The aim of this study was to investigate the effect of a 40 week strength training intervention on strength (maximal- & reactive-strength), VVO2max, economy and body composition (body mass, fat & lean mass) in competitive distance runners...
April 21, 2016: Journal of Strength and Conditioning Research
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
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
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
Martino V Franchi, Daniel J Wilkinson, Jonathan I Quinlan, William K Mitchell, Jonathan N Lund, John P Williams, Neil D Reeves, Kenneth Smith, Philip J Atherton, Marco V Narici
UNLABELLED: We recently reported that the greatest distinguishing feature between eccentric (ECC) and concentric (CON) muscle loading lays in architectural adaptations: ECC favors increases in fascicle length (Lf), associated with distal vastus lateralis muscle (VL) hypertrophy, and CON increases in pennation angle (PA). Here, we explored the interactions between structural and morphological remodeling, assessed by ultrasound and dual x-ray absorptiometry (DXA), and long-term muscle protein synthesis (MPS), evaluated by deuterium oxide (D2O) tracing technique...
November 2015: Physiological Reports
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)...
2015: Arthritis Research & Therapy
Chad M Kerksick, Michael D Roberts, Vincent J Dalbo, Kyle L Sunderland
PURPOSE: To examine age-related differences in intramuscular concentrations of adenosine triphosphate (ATP), free creatine (FCr), phosphocreatine (PCr) and total creatine (TCr) and if these differences were related to muscle performance. METHODS: Forty-two healthy, non-sedentary, males between 20 and 76 years provided muscle samples to determine [ATP], [FCr], [PCr], and [TCr]. Maximal strength and endurance were assessed and correlated with intramuscular variables...
January 2016: European Journal of Applied Physiology
Gerald T Mangine, Jay R Hoffman, Adam M Gonzalez, Jeremy R Townsend, Adam J Wells, Adam R Jajtner, Kyle S Beyer, Carleigh H Boone, Amelia A Miramonti, Ran Wang, Michael B LaMonica, David H Fukuda, Nicholas A Ratamess, Jeffrey R Stout
This investigation compared the effect of high-volume (VOL) versus high-intensity (INT) resistance training on stimulating changes in muscle size and strength in resistance-trained men. Following a 2-week preparatory phase, participants were randomly assigned to either a high-volume (VOL; n = 14, 4 × 10-12 repetitions with ~70% of one repetition maximum [1RM], 1-min rest intervals) or a high-intensity (INT; n = 15, 4 × 3-5 repetitions with ~90% of 1RM, 3-min rest intervals) training group for 8 weeks...
August 2015: Physiological Reports
Miguel Sanchez-Moreno, Fernando Pareja-Blanco, David Diaz-Cueli, Juan J González-Badillo
BACKGROUND: The aim of this study is to investigate the relationship among pull-up and lat pull exercises and different anthropometric dimensions in trained athletes. METHODS: Twenty-five males were evaluated for maximum number of pull-ups, one-repetition maximum lat pull (1RM Lat Pull), lat pull repetitions at 80% 1RM (Lat Pull at 80% 1RM), lat pull repetitions at a load equivalent to body mass (Lat Pull at BM-load), and different anthropometric variables. Furthermore, the subjects were divided in higher (HPG, N...
July 2016: Journal of Sports Medicine and Physical Fitness
T Bjørnsen, S Salvesen, S Berntsen, K J Hetlelid, T H Stea, H Lohne-Seiler, G Rohde, K Haraldstad, T Raastad, U Køpp, G Haugeberg, M A Mansoor, N E Bastani, R Blomhoff, S B Stølevik, O R Seynnes, G Paulsen
The aim of this study was to investigate the effects of vitamin C and E supplementation on changes in muscle mass (lean mass and muscle thickness) and strength during 12 weeks of strength training in elderly men. Thirty-four elderly males (60-81 years) were randomized to either an antioxidant group (500 mg of vitamin C and 117.5 mg vitamin E before and after training) or a placebo group following the same strength training program (three sessions per week). Body composition was assessed with dual-energy X-ray absorptiometry and muscle thickness by ultrasound imaging...
July 2016: Scandinavian Journal of Medicine & Science in Sports
Nikolaos D Zaras, Angeliki-Nikoletta E Stasinaki, Spyridon K Methenitis, Argyro A Krase, Giorgos P Karampatsos, Giorgos V Georgiadis, Konstantinos M Spengos, Gerasimos D Terzis
The rate of force development (RFD) is an essential component for performance in explosive activities, although it has been proposed that muscle architectural characteristics might be linked with RFD and power performance. The purpose of the study was to investigate the relationship between RFD, muscle architecture, and performance in young track and field throwers. Twelve young track and field throwers completed 10 weeks of periodized training. Before (T1) and after (T2) training performance was evaluated in competitive track and field throws, commonly used shot put tests, isometric leg press RFD, 1 repetition maximum (1RM) strength as well as vastus lateralis architecture and body composition...
January 2016: Journal of Strength and Conditioning Research
Tormod S Nilsen, Truls Raastad, Eva Skovlund, Kerry S Courneya, Carl W Langberg, Wolfgang Lilleby, Sophie D Fosså, Lene Thorsen
BACKGROUND: Androgen deprivation therapy (ADT) increases survival rates in prostate cancer (PCa) patients with locally advanced disease, but is associated with side effects that may impair daily function. Strength training may counteract several side effects of ADT, such as changes in body composition and physical functioning, which in turn may affect health-related quality of life (HRQOL). However, additional randomised controlled trials are needed to expand this knowledge. MATERIAL AND METHODS: Fifty-eight PCa patients on ADT were randomised to either 16 weeks of high-load strength training (n = 28) or usual care (n = 30)...
November 2015: Acta Oncologica
K D Weisgarber, D G Candow, J P Farthing
OBJECTIVES: To examine the combined effects of whey protein supplementation and low intensity, high-volume resistance training in healthy postmenopausal women. DESIGN, SETTING AND SUBJECTS: Postmenopausal women (n=12; age: 57 ± 4.7 years, weight: 75 ± 17.4 kg, height: 163 ± 5.5 cm, body mass index: 28.3 ± 7.0) consumed whey protein (4 x 10 gram aliquots) or placebo (maltodextrin) during unilateral resistance training sessions 2 days per week (Monday, Thursday) and consumed the opposite beverage during training the other side of the body on alternating days (Tuesday, Friday) for 10 weeks...
May 2015: Journal of Nutrition, Health & Aging
Jordan J Outlaw, Abbie E Smith-Ryan, Amanda L Buckley, Stacie L Urbina, Sara Hayward, Hailee L Wingfield, Bill Campbell, Cliffa Foster, Lem W Taylor, Colin D Wilborn
Outlaw, JJ, Smith-Ryan, AE, Buckley, AL, Urbina, SL, Hayward, S, Wingfield, HL, Campbell, B, Foster, C, Taylor, LW, and Wilborn, CD. Effects of β-alanine on body composition and performance measures in collegiate women. J Strength Cond Res 30(9): 2627-2637, 2016-The purpose of this study was to evaluate the effects of β-alanine (BA) supplementation and resistance training on body composition and performance. In a double-blind placebo-controlled design, 16 untrained collegiate females (mean ± SD: 21.0 ± 2...
September 2016: Journal of Strength and Conditioning Research
Leeann M Bellamy, Sophie Joanisse, Amanda Grubb, Cameron J Mitchell, Bryon R McKay, Stuart M Phillips, Steven Baker, Gianni Parise
The extent of skeletal muscle hypertrophy in response to resistance training is highly variable in humans. The main objective of this study was to explain the nature of this variability. More specifically, we focused on the myogenic stem cell population, the satellite cell (SC) as a potential mediator of hypertrophy. Twenty-three males (aged 18-35 yrs) participated in 16 wk of progressive, whole body resistance training, resulting in changes of 7.9±1.6% (range of -1.9-24.7%) and 21.0±4.0% (range of -7.0 to 51...
2014: PloS One
Jordan J Outlaw, Colin D Wilborn, Abbie E Smith-Ryan, Sara E Hayward, Stacie L Urbina, Lem W Taylor, Cliffa A Foster
BACKGROUND: Pre-workout supplements containing numerous ingredients claim to increase performance and strength. Product-specific research is important for identifying efficacy of combined ingredients. The purpose of this study was to evaluate the effects of a proprietary pre-workout dietary supplement containing creatine monohydrate, beta-alanine, L-Tarurine, L-Leucine, and caffeine, on anaerobic power, muscular strength, body composition, and mood states. METHODS: In a double-blind, randomized, matched-pair design, twenty male subjects (mean ± SD; 22...
2014: Journal of the International Society of Sports Nutrition
Simon Walker, Keijo Häkkinen
This study investigated whether differences in neuromuscular performance and muscle hypertrophy occur between young and older men. Twenty-three young (29 ± 9 years) and 26 older men (64 ± 8 years) completed 10 weeks of high-volume, medium load "hypertrophic" resistance training with low frequency (twice per week) with 10 young (34 ± 11 years) and 11 older men (65 ± 3 years) acting as nontraining control subjects. Training consisted of 2-5 sets of 8-14 repetitions (1- to 2-minute rest). Lower-limb dynamic (leg press) and isometric maximum leg extension force, as well as lower-limb lean mass and vastus lateralis cross-sectional area were assessed before and after the training period...
November 2014: Journal of Strength and Conditioning Research
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"