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Author Arnold Nelson

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A Pre-Exercise Dose of Muscle Sentry® has no Effect on Performing Repeated Leg Press Sets to Failure.

Trezlyn M Bartschi, David C Sanders, Tyler M Farney, Joke Kokkonen, Arnold G Nelson,

This study compared the number of bilateral leg presses done at 150% of body mass while on either Muscle Sentry® (MS) or placebo (PL). Participants (16 women, 14 men, college students 19-26 years) performed 2 sets of leg press to failure using 150% of their body mass with 5 min ... Read more >>

Int J Exerc Sci (International journal of exercise science)
[2017, 10(7):1000-1008]

Cited: 0 times

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Visually-guided saccades attenuate postural sway under non-fatigued, fatigued, and stretched states.

Matthew A Yeomans, Arnold G Nelson, Michael J MacLellan, Jan M Hondzinski,

Muscular fatigue, which reduces force output and position sense, often leads to increased sway and potential balance impairments. In contrast, visually-guided saccadic eye movements (saccades) can attenuate sway more than fixating gaze on an external target. The goals of this study were to determine whether the use of saccades could ... Read more >>

Exp Brain Res (Experimental brain research)
[2018, 236(12):3351-3361]

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A Pre-Exercise Dose of Melatonin Can Alter Substrate Use During Exercise.

Cardyl P Trionfante, Greggory R Davis, Tyler M Farney, Ryan W Miskowiec, Arnold G Nelson,

Notwithstanding the lack of exercise research, several reviews have championed the use of melatonin to combat metabolic syndrome. Therefore, this study compared substrate utilization during a 30-minute (min) graded exercise protocol following the ingestion of either 6 mg melatonin (M) or a placebo (P). Participants (12 women, 12 men) performed ... Read more >>

Int J Exerc Sci (International journal of exercise science)
[2017, 10(7):1029-1037]

Cited: 1 time

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The Effect of Aspartate and Sodium Bicarbonate Supplementation on Muscle Contractile Properties Among Trained Men.

Tyler M Farney, Michael J MacLellan, Christopher M Hearon, Neil M Johannsen, Arnold G Nelson,

Farney, TM, MacLellan, MJ, Hearon, CM, Johannsen, NM, and Nelson, AG. The effect of aspartate and sodium bicarbonate supplementation on muscle contractile properties among trained men. J Strength Cond Res XX(X): 000-000, 2018-The focus of this investigation was to examine the effects of aspartate and NaHCO3 supplementation on muscle contractile ... Read more >>

J Strength Cond Res (Journal of strength and conditioning research)
[2018, :]

Cited: 0 times

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Caffeine, acute static stretching and maximum knee flexion strength.

Tyler M Farney, Arnold G Nelson, Joke Kokkonen,

BACKGROUND:Reductions in one-repetition maximum lifts (1RM) following static stretching can be attributed to enhanced neural inhibition, which can be reduced by using stimulants like caffeine. This study compared knee-flexion 1RM following either static stretching (SS) or no-stretching (NS), as well as after ingesting either caffeine (C) or placebo (P). METHODS:Twenty-four ... Read more >>

J Sports Med Phys Fitness (The Journal of sports medicine and physical fitness)
[2019, 59(2):223-229]

Cited: 0 times

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Relationship between family history of type 2 diabetes and serum FGF21.

Greggory R Davis, Tiffany Deville, Joshua Guillory, David Bellar, Arnold G Nelson,

Determining predictive markers for the development of type 2 diabetes (T2D), particularly in young individuals, offers immense potential benefits in preventative medicine. Previous research examining serum fibroblast growth factor 21 (FGF21) in humans has revealed equivocal relationships with clinical markers of metabolic dysfunction. However, it is unknown to what extent, ... Read more >>

Eur. J. Clin. Invest. (European journal of clinical investigation)
[2017, 47(11):853-859]

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Emerging Relationships Between Vitamin D Status, Physical Activity Habits, and Immune Indices in College-Aged Females.

Laura A Forney, Marilyn A Dietrich, Neil M Johannsen, Tara M Henagan, Georgianna Tuuri, Arnold G Nelson, Amanda K Barkemeyer, Laura K Stewart,

It has been determined that individuals who are regularly physically active have more favorable inflammatory profiles; less is known about how vitamin D levels can impact inflammation. This study explored the relationship between inflammatory indices in physically active (PA) and not physically active (NPA) individuals with 25-hydroxyvitamin D (25OHD) concentrations ... Read more >>

Int J Vitam Nutr Res (International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition)
[2017, 87(1-2):49-58]

Cited: 0 times

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Spirometric reference values for Hopi Native American children ages 4-13 years.

David A Arnall, Arnold G Nelson, Christopher M Hearon, Christina Interpreter, Verdell Kanuho,

Spirometry is the most important tool in diagnosing pulmonary disease and is the most frequently performed pulmonary function test. Respiratory disease is also one of the greatest causes for morbidity and mortality on the Hopi Nation, but no specific reference equations exist for this unique population. The purpose of this ... Read more >>

Pediatr. Pulmonol. (Pediatric pulmonology)
[2016, 51(4):386-393]

Cited: 2 times

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Effect of 12 Weeks of Periodized Resistance Training Upon Total Plasma Adiponectin Concentration in Healthy Young Men.

Greggory R Davis, Jacqueline M Stephens, Arnold G Nelson,

The effects of resistance training on adiponectin have thus far yielded equivocal results. However, the effect of periodized resistance training on plasma adiponectin in offspring of type 2 diabetic and nondiabetic (ND) parents (first-degree family history) has yet to be determined. Untrained healthy young men with and without a first-degree ... Read more >>

J Strength Cond Res (Journal of strength and conditioning research)
[2015, 29(11):3097-3104]

Cited: 2 times

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Short bouts of high-intensity resistance-style training produce similar reductions in fasting blood glucose of diabetic offspring and controls.

Ryan D Russell, Arnold G Nelson, Robert R Kraemer,

Family history of diabetes (FH) is associated with impaired cardiometabolic function. Aerobic exercise improves insulin sensitivity, though resistance training studies on fasting glucose (FG) in FH are lacking. This study examined the effects of 7 weeks of high-intensity-resistance-focused training (HIRFT), including circuit, core, and plyometric resistance training on FG in ... Read more >>

J Strength Cond Res (Journal of strength and conditioning research)
[2014, 28(10):2760-2767]

Cited: 4 times

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Maximal respiratory pressure reference values for Navajo children ages 6-14.

David A Arnall, Arnold G Nelson, Beatrice Owens, Maria dels Àngels Cebrià i Iranzo, Geri Ann Sokell, Verdell Kanuho, Christina Interpreter, J Richard Coast,

BACKGROUND: Since anthropometric variables are critical to the creation of pulmonary nomograms for FVC, FEV1, and other volumes and capacities, it is logical that anthropometric variables also influence the values of the maximal respiratory pressures (MRPs). Since nomograms are race-specific, it is important that tribe-specific tables of normal maximal inspiratory ... Read more >>

Pediatr. Pulmonol. (Pediatric pulmonology)
[2013, 48(8):804-808]

Cited: 6 times

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Metabolic dysfunction in diabetic offspring: deviations in metabolic flexibility.

Ryan D Russell, Robert R Kraemer, Arnold G Nelson,

In type 2 diabetes (T2D), insulin resistance is related to comorbidities, including high lipotoxicity, poor glucoregulation, and loss of metabolic flexibility. Controversy exists regarding whether reduced metabolic flexibility precedes insulin resistance or vice versa.The purpose of this study was to determine whether a family history of T2D leads to metabolic ... Read more >>

Med Sci Sports Exerc (Medicine and science in sports and exercise)
[2013, 45(1):8-15]

Cited: 7 times

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Acute stretching increases postural stability in nonbalance trained individuals.

Arnold G Nelson, Joke Kokkonen, David A Arnall, Li Li,

Studies into the relationship between acute stretching and maintenance of postural balance have been inconclusive. It was hypothesized that familiarization with the task and subsequent learning might be involved in the conflicting results. Therefore, this study was to designed determine if a regimen of static stretching exercises after a familiarization ... Read more >>

J Strength Cond Res (Journal of strength and conditioning research)
[2012, 26(11):3095-3100]

Cited: 3 times

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A 10-week stretching program increases strength in the contralateral muscle.

Arnold G Nelson, Joke Kokkonen, Jason B Winchester, Walter Kalani, Karen Peterson, Michael S Kenly, David A Arnall,

It was questioned whether a unilateral stretching program would induce a crosstraining effect in the contralateral muscle. To test this, 13 untrained individuals participated in a 10-week stretching program while 12 other untrained individuals served as a control group. For the experimental group, the right calf muscle was stretched 4 ... Read more >>

J Strength Cond Res (Journal of strength and conditioning research)
[2012, 26(3):832-836]

Cited: 5 times

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Twenty minutes of passive stretching lowers glucose levels in an at-risk population: an experimental study.

Arnold G Nelson, Joke Kokkonen, David A Arnall,

QUESTION: Can passive static stretching lower blood glucose in an at-risk population? DESIGN: Randomised, within-participant experimental study. PARTICIPANTS: 22 adults (17 males) either at increased risk of Type 2 diabetes or with Type 2 diabetes. INTERVENTION: The participants reported to the laboratory 2hr after eating a meal, and drank 355ml ... Read more >>

J Physiother (Journal of physiotherapy)
[2011, 57(3):173-178]

Cited: 6 times

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Relationship between isometric and dynamic strength in recreationally trained men.

Michael R McGuigan, Michael J Newton, Jason B Winchester, Arnold G Nelson,

The purpose of this investigation was to examine the relationships between measures of maximal isometric force (peak force [PF]), rate of force development (RFD), vertical jump performance (VJ) and 1-repetition maximum (1RM) strength in recreationally trained men. The subjects in this study were 26 men ([mean +/- SD]: age 22 ... Read more >>

J Strength Cond Res (Journal of strength and conditioning research)
[2010, 24(9):2570-2573]

Cited: 34 times

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Early-phase resistance training strength gains in novice lifters are enhanced by doing static stretching.

Joke Kokkonen, Arnold G Nelson, Tina Tarawhiti, Paul Buckingham, Jason B Winchester,

This study investigated differences in lower-body strength improvements when using standard progressive resistance training (WT) vs. the same progressive resistance training combined with static stretching exercises (WT + ST). Thirty-two college students (16 women and 16 men) were pair matched according to sex and knee extension 1 repetition maximum (1RM). ... Read more >>

J Strength Cond Res (Journal of strength and conditioning research)
[2010, 24(2):502-506]

Cited: 6 times

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A single 30-s stretch is sufficient to inhibit maximal voluntary strength.

Jason B Winchester, Arnold G Nelson, Joke Kokkonen,

While it has been well established that an acute stretching program can inhibit maximal muscle performance, the amount of stretching needed to produce the deleterious response is unknown. Therefore this study examined the dose-response relationship between acute stretching and strength inhibition. Eighteen college students performed a one repetition maximum (1-RM) ... Read more >>

Res Q Exerc Sport (Research quarterly for exercise and sport)
[2009, 80(2):257-261]

Cited: 18 times

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Spirometry reference values for Navajo children ages 6-14 years.

David A Arnall, Verdell Kanuho, Christina Interpreter, Arnold G Nelson, J Richard Coast, Joey C Eisenmann, Paul L Enright,

Spirometry is the most important tool in diagnosing pulmonary disease and is the most frequently performed pulmonary function test. Since respiratory disease is the single greatest cause for morbidity and mortality on the Navajo Nation, the purpose of this study was to create new age and race-specific pulmonary nomograms for ... Read more >>

Pediatr. Pulmonol. (Pediatric pulmonology)
[2009, 44(5):489-496]

Cited: 3 times

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Pulsed infrared light therapy does not increase nitric oxide concentration in the blood of patients with type 1 and type 2 diabetes mellitus.

David Alan Arnall, Arnold G Nelson, Laura Stambaugh, Núria Sanz Sevilla, M Angels Cebrià i Iranzo, Laura López Bueno, Isabel Sanz, Sheridan B Arnall,

The purpose of this study was to determine if NO blood concentrations increased acutely following an 8-week course of pulsed infrared light therapy (PILT) which could be linked to an improvement in peripheral protective sensation (PPS) in patients who have profound chronic diabetic peripheral neuropathy. A total of 22 subjects ... Read more >>

Acta Diabetol (Acta diabetologica)
[2009, 46(3):233-237]

Cited: 1 time

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Static stretching impairs sprint performance in collegiate track and field athletes.

Jason B Winchester, Arnold G Nelson, Dennis Landin, Michael A Young, Irving C Schexnayder,

Previous research has shown that static stretching (SS) can diminish the peak force output of stretch-shortening cycle actions while performing a dynamic warm-up (DW) protocol has been shown to enhance performance in similar activities. The purpose of this study was to establish whether the deleterious effects of SS would wash ... Read more >>

J Strength Cond Res (Journal of strength and conditioning research)
[2008, 22(1):13-19]

Cited: 54 times

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Early phase strength development: a four-week training comparison of different programs.

Dennis Landin, Arnold G Nelson,

The purpose of this study was to explore the effects of various exercise sequences in the early weeks of a strength training program. Forty-two untrained men were randomly assigned to one of 4 training regimens, which were differentiated by the order in which the exercises were performed, and trained 3 ... Read more >>

J Strength Cond Res (Journal of strength and conditioning research)
[2007, 21(4):1113-1116]

Cited: 1 time

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Chronic static stretching improves exercise performance.

Joke Kokkonen, Arnold G Nelson, Carol Eldredge, Jason B Winchester,

PURPOSE: This study investigated the influence of static stretching exercises on specific exercise performances. METHODS: Thirty-eight volunteers participated in this study. The stretching group (STR) consisted of 8 males and 11 females whose activity was limited to a 10-wk, 40-min, 3-d.wk(-1) static stretching routine designed to stretch all the major ... Read more >>

Med Sci Sports Exerc (Medicine and science in sports and exercise)
[2007, 39(10):1825-1831]

Cited: 30 times

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Supercompensated glycogen loads persist 5 days in resting trained cyclists.

David A Arnall, Arnold G Nelson, Jack Quigley, Stephen Lex, Tom Dehart, Peggy Fortune,

Research data indicates a persistence of elevated muscle glycogen concentration 3 days post-supercompensation in resting athletes. This study expands our earlier findings by determining whether muscle glycogen remains elevated 3, 5, or 7 days post-supercompensation. Seventeen trained male cyclists underwent one bout of exhaustive exercise to deplete muscle glycogen. This ... Read more >>

Eur. J. Appl. Physiol. (European journal of applied physiology)
[2007, 99(3):251-256]

Cited: 5 times

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Strength inhibition following an acute stretch is not limited to novice stretchers.

Arnold G Nelson, Joke Kokkonen, Carol Eldredge,

Res Q Exerc Sport (Research quarterly for exercise and sport)
[2005, 76(4):500-506]

Cited: 13 times

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