Exercise Science Commons^™

Effects Of Dietary Nitrate And Caffeine On End Power And Work Above End Power During A 3 Min All-Out Test In Trained Male Cyclists, Anthony M. Hagele, Kyle Sunderland, Petey W. Mumford, Chad Kerksick

Faculty Scholarship

Background: The purpose of this study was to examine the effects of acute dietary nitrate (NO3−) and caffeine (CAF) supplementation on end power (EP) and work performed above EP (WEP) in trained male cyclists during a 3 min all-out test (3MT) on a cycle ergometer.

Methods: Fifteen healthy, trained male cyclists (28.5 ± 5.3 years, 79.2 ± 9.1 kg, VO2peak 55.2 ± 5.6 mL·kg−1·min−1) completed four exercise trials in a randomized, double-blind, placebo-controlled, crossover study design separated by 3–7 days. The four experimental conditions were placebo beverage (nitrate-depleted) + placebo capsule, nitrate-rich beetroot juice + placebo capsule (BR), …

Effects Of Menstrual Cycle Phases On Muscular Strength And Ligament Laxity, Nicole Waldo Johnson

2026 Student Academic Showcase

Female participation in sport continues to increase, yet women remain largely underrepresented in research. Due to hormonal differences, additional research is needed to understand how menstrual cycle (MC) phases influence performance and injury risk. Females experience higher incidences of anterior cruciate ligament (ACL) injuries, which may be influenced by hormonal fluctuations. The purpose of this study is to examine how MC phases and changes affect muscular strength and ligament laxity at the knee. Muscular strength and ligament laxity will be tested twice during the MC: once during the early follicular phase (EFP) and the second set are to be collected …

Neuromuscular Function And Balance In Young Adults: Feasibility And Reliability Of Strength And Conditioning Assessments, Riley Fritzsche, Nicole Waldo Johnson, Jessica M. Moon

2026 Student Academic Showcase

Neuromuscular assessments are widely used in exercise science however; the reliability of comprehensive functional testing batteries in healthy young adults remains unclear. Since sex and hormone status may influence performance, this study proposes that neuromuscular outcomes will differ across males, naturally cycling females, and hormonal contraceptive users. This pilot study will evaluate the feasibility and test-retest reliability of a neuromuscular assessment battery in adults aged 18–35 using a repeated-measures design. Participants will complete two identical testing sessions separated by 5–10 days. Assessments will include balance on force plates, handgrip strength, a 5-repetition chair-rise, and the 3-meter Timed Up-and-Go, alongside neuromuscular …

Positive Correlations Between Olympic Weightlifting Performance And Countermovement Vertical Jumping Performance, James L. Tice, Calvin J. Lackey, Robert W. Smith, Kyle L. Sutherland, Patrick S. Harty

2026 Student Academic Showcase

In recent years, force plate vertical jump testing has greatly increased in popularity in the strength and conditioning space. PURPOSE: To examine any potential relationships between force plate vertical jump parameters and more traditional metrics of weightlifting performance such as snatch to clean and jerk ratio. METHODS: 14 male and 18 female collegiate weightlifters completed three rounds of countermovement vertical jumps with 30 seconds of rest between attempts. Competition results from all 2025 competitions were used to generate best Total, Sinclair points, Q-points, and best Snatch to Clean and Jerk Ratio. RESULTS: Vertical jump height, peak propulsive force, Sinclair, and …

Effects Of A Carbohydrate + Caffeine Beverage On Game Performance, Blood Glucose And Perceived Effort In Collegiate Women Soccer Players, Andrew Jagim, Abby Ambrosius, Makenna Carpenter, Joesi Krieger, Lochlan Charley, Jennifer Fields, Margaret T. Jones, Chad Kerksick

Faculty Scholarship

Carbohydrate availability and caffeine ingestion have been shown to elicit improvements in performance independently of one another. The purpose of the study was to examine the effect of a carbohydrate + caffeine beverage on performance and perceived effort in soccer players. Forty-three collegiate women’s soccer athletes were recruited to participate during a single day of simulated match play, in which each team played once. Athletes consumed either a carbohydrate + caffeine (Experimental) beverage or a control (Control) beverage (flavored water) during half-time in a double-blind, placebo-controlled, randomized control trial design. Prior to and after each game, Ratings of Perceived Exertion …

International Society Of Sports Nutrition Position Stand: Effects Of Dietary Antioxidants On Exercise And Sports Performance, Drew E. Gonzalez, Broderick L. Dickerson, Brandon M. Roberts, Jennifer A. Kurtz, Hunter S. Waldman, Adam M. Gonzalez, Matthew J. Mcallister, Jeffery L. Heileson, Richard J. Bloomer, Shawn M. Arent, Darren G. Candow, Jeffrey R. Stout, Karen A. Hecht, Bill Campbell, Chad Kerksick, Douglas Kalman, Jose Antonio, Richard B. Kreider

Faculty Scholarship

Following a comprehensive review, the International Society of Sports Nutrition (ISSN) has developed an official position on the role of dietary antioxidants in exercise and sport. Antioxidants play a complex, context-dependent role in vivo; they can facilitate recovery from exercise but may also hinder training adaptations when consumed at supraphysiological doses. While endogenous antioxidant systems can effectively maintain redox balance, dietary sources, particularly whole foods, can help mitigate excessive oxidative stress following intense/heavy training or inadequate recovery. The influence of dietary antioxidants depend on timing, dosage, type, and individual factors. The ISSN’s official position encompasses the following: (1) Redox balance …

Physical Attributes Of Competitive Collegiate Co-Ed Men, Base/Backspots, Flyers, And Tumblers, Grace M. Liebhart, Harry P. Cintineo

2025 Student Academic Showcase

Cheerleading is a demanding sport often overlooked in research. This study examined physical attributes of 41 collegiate cheerleaders representing co-ed men, base/backspots, flyers, and tumblers. Participants underwent body composition, relative countermovement and squat jump, isometric mid-thigh pull, and 1RM seated military press assessments. Data were analyzed using ANOVA with gender adjustment followed by Bonferroni-adjusted post-hoc tests (α=0.05). Analyses showed significant positional differences for body fat percentage (P< 0.003), lean mass (P< 0.001), squat jump (P=0.034), and 1RM strength (P< 0.001). Bases/backspots had higher body fat percentage than flyers (P=0.016) with no other differences (P>0.110). Lean mass and 1RM strength were highest in co-ed men (P< 0.018) followed by bases/backspots and tumblers than flyers (P< 0.073). Post-hoc analysis revealed no differences in squat jump (P>0.052). These findings highlight unique physical characteristics of cheerleading positions and suggest implementation of specific strength training programs. Future investigations should …

Maintenance Of Anaerobic Power Across A Competitive Season In Collegiate Women’S Ice Hockey Playersquinn, Quinn M. Mclaren, Olivia J. Grabianowski, Molly K. Henderson, Kyle Sunderland

2025 Student Academic Showcase

The purpose of this study was to examine changes in anaerobic power and capacity in women’s college ice hockey players from pre-season to post-season. Fourteen NCAA Division I female ice hockey players performed a 30-second Wingate test (WAnT) two weeks prior to the start of the competitive season and three weeks following the final game. Athletes completed a standardized warm-up including a short sprint on the cycle ergometer to prepare for the maximal effort test. The WAnT began from a rolling start, with the athlete pedaling at 100–110 RPM. Athletes then completed a 30-second all-out sprint against 9% body weight …

Interlimb Asymmetries Differ Between Bilateral And Unilateral Countermovement Jump, Meghan Rea

2022 Student Academic Showcase

Measuring interlimb asymmetries is an important when evaluating injury risk and rehabilitation in athletes. PURPOSE: To compare the magnitude of interlimb asymmetries when performing a bilateral and unilateral CMJ. METHODS: Twenty-three female collegiate lacrosse athletes volunteered for this study. Athletes performed three bilateral CMJ and three unilateral CMJ using each leg. Data from the two jumps with highest height was averaged. Interlimb asymmetries were calculated as percent interlimb difference: (100/(maximum value)*(minimum value)*-1+100). RESULTS: Unilateral CMJ height revealed an average 12.2 ± 9.7% interlimb difference. Asymmetries were significantly different between CMJ styles when measuring peak breaking force, average breaking force, and …

Workloads Of Collegiate Female Lacrosse Athletes During A Division Ii National Championship Season, Paige Sutton

2022 Student Academic Showcase

There is a paucity of data on workloads in collegiate female lacrosse players. PURPOSE: Determine internal and external workloads of collegiate female lacrosse players. METHODS: Heart rate (HR), perceived exertion, and GPS data were analyzed from 19 collegiate female lacrosse players throughout an entire National Championship season. RESULTS: Except for average HR (p=0.494), workload variables were significantly less during training compared to games. Average practice duration was shorter than average gameday duration (p

Assessment Of Skeletal Muscle Characteristics In Female Collegiate Cheer Athletes, Amy Meyers, Esther Duncan, Blair Besancenez, Claire Gruenke, Petey Mumford

2022 Student Academic Showcase

PURPOSE: To examine training modalities and muscle architecture characteristics between legs in collegiate cheer athletes. METHODS: Thirteen female collegiate cheer athletes (19 ± 1 years, 164.3 ± 6.8 cm, 63.0 ± 10.2 kg) were assessed for anthropometrics, a survey to assess type of training outside of cheer practice, and B mode ultrasound on both legs during a single visit. All ultrasound images were analyzed at 50% of the vastus lateralis for muscle thickness (MT), pennation angle (PA), and fascicle length (FL). RESULTS: Type of exercise training outside of practice counts: endurance (2), resistance (2), mixed (6), and do not train …

Contributing Factors To Low Energy Availability In Female Athletes: A Narrative Review Of Energy Availability, Training Demands, Nutrition Barriers, Body Image, And Disordered Eating, Andrew R. Jagim, Jennifer Fields, Meghan K. Magee, Chad M. Kerksick, Margaret T. Jones

Faculty Scholarship

Relative Energy Deficiency in sport is experiencing remarkable popularity of late, particularly among female athletes. This condition is underpinned by low energy availability, which is a byproduct of high energy expenditure, inadequate energy intake, or a combination of the two. Several contributing factors exist that may predispose an athlete to low energy availability, and therefore a holistic and comprehensive assessment may be required to identify the root causes. The focus of the current narrative review is to discuss the primary contributing factors as well as known risk factors for low energy availability among female athletes to help practitioners increase awareness …

Prevalence And Amounts Of Common Ingredients Found In Energy Drinks And Shots, Andrew R. Jagim, Patrick S. Harty, Abdelrahman R. Barakat, Jacob L. Erickson, Victoria Carvalho, Chinguun Khurelbaatar, Clayton L. Camic, Chad M. Kerksick

Faculty Scholarship

Background: Energy drinks are one of the most popular packaged beverage products consumed within the United States (US). Energy drinks are considered a functional beverage, a category that also includes sports drinks and nutraceutical beverages. Purpose: The focus of the current study was to examine the nutrition fact panels of the top selling commercially available energy drink and energy shot products within the US to characterize common ingredient profiles to help establish a standard definition and ingredient profile of energy drinks and energy shots for consumers, health care practitioners, and researchers. Methods: The top 75 commercially available energy drinks and …

Absorption Kinetics Of Berberine And Dihydroberberine And Their Impact On Glycemia: A Randomized, Controlled, Crossover Pilot Trial, Jessica M. Moon, Kayla M. Ratliff, Anthony M. Hagele, Richard A. Stecker, Petey W. Mumford, Chad M. Kerksick

Faculty Scholarship

Berberine is a natural alkaloid used to improve glycemia but displays poor bioavailability and increased rates of gastrointestinal distress at higher doses. Recently, dihydroberberine has been developed to combat these challenges. This study was designed to determine the rate and extent to which berberine appeared in human plasma after oral ingestion of a 500 mg dose of berberine (B500) or 100 mg and 200 mg doses of dihydroberberine (D100 and D200). In a randomized, double-blind, crossover fashion, five males (26 ± 2.6 years; 184.2 ± 11.6 cm; 91.8 ± 10.1 kg; 17.1 ± 3.5% fat) completed a four-dose supplementation protocol …

Plant Proteins And Exercise: What Role Can Plant Proteins Have In Promoting Adaptations To Exercise?, Chad M. Kerksick, Andrew Jagim, Anthony Hagele, Ralf Jäger

Faculty Scholarship

Adequate dietary protein is important for many aspects of health with current evidence suggesting that exercising individuals need greater amounts of protein. When assessing protein quality, animal sources of protein routinely rank amongst the highest in quality, largely due to the higher levels of essential amino acids they possess in addition to exhibiting more favorable levels of digestibility and absorption patterns of the amino acids. In recent years, the inclusion of plant protein sources in the diet has grown and evidence continues to accumulate on the comparison of various plant protein sources and animal protein sources in their ability to …

Creatine For Exercise And Sports Performance, With Recovery Considerations For Healthy Populations, Benjamin Wax, Chad M. Kerksick, Andrew R. Jagim, Jerry J. Mayo, Brian C. Lyons, Richard B. Kreider

Faculty Scholarship

Creatine is one of the most studied and popular ergogenic aids for athletes and recreational weightlifters seeking to improve sport and exercise performance, augment exercise training adaptations, and mitigate recovery time. Studies consistently reveal that creatine supplementation exerts positive ergogenic effects on single and multiple bouts of short-duration, high-intensity exercise activities, in addition to potentiating exercise training adaptations. In this respect, supplementation consistently demonstrates the ability to enlarge the pool of intracellular creatine, leading to an amplification of the cell’s ability to resynthesize adenosine triphosphate. This intracellular expansion is associated with several performance outcomes, including increases in maximal strength (low-speed …

Health And Ergogenic Potential Of Oral Adenosine-5′-Triphosphate (Atp) Supplementation, Ralf Jäger, Martin Purpura, John A. Rathmacher, John C. Fuller Jr., Lisa M. Pitchford, Fabricio E. Ross, Chad M. Kerksick

Faculty Scholarship

Adenosine triphosphate (ATP) is the primary compound that provides energy to drive many processes in living cells, including muscle contraction, neurotransmission, and cardiac function. Initial research used enteric-coated ATP that displayed no apparent efficacy. However, ATP disodium supplementation has demonstrated improved bioavailability and acute and chronic benefits to cardiovascular health, muscular performance, body composition, and recovery while attenuating muscle breakdown and fatigue. In this review, we provide a critical assessment of oral ATP’s bioavailability and its various health and ergogenic benefits.

Physical And Metabolic Changes After Ileal Pouch-Anal Anastomosis: A Case Study, Jacob Erickson, Patrick Harty, Paul Molling, Richie Stecker, Chad Kerksick, Andrew Jagim

Faculty Scholarship

This case study examined changes in body composition, resting metabolic rate (RMR), aerobic capacity, and daily physical activity in a patient who had ulcerative colitis and underwent ileal pouch-anal anastomosis (IPAA) surgery. Body composition, RMR, and peak oxygen consumption (VO2peak) were assessed prior to surgery and four, eight, and 16 weeks after IPAA surgery. Daily physical activity data were extracted from a wrist-worn activity tracker preoperatively and 16 months postoperatively. At baseline, total body mass was 95.3 kg; body fat, 11.6%; lean body mass, 81.1 kg; RMR, 2416 kcal/d; and VO2peak, 42.7 mL/kg/min. All values decreased from baseline at four …

The Basics Of Training For Muscle Size And Strength: A Brief Review On The Theory, Samuel L. Buckner, Matthew B. Jessee, Grant J. Mouser, Scott J. Dankel, Kevin T. Mattocks, Zachary W. Bell, Takashi Abe, Jeremy P. Loenneke

Faculty Scholarship

The periodization of resistance exercise is often touted as the most effective strategy for optimizing muscle size and strength adaptations. This narrative persists despite a lack of experimental evidence to demonstrate its superiority. In addition, the general adaptation syndrome, which provides the theoretical framework underlying periodization, does not appear to provide a strong physiological rationale that periodization is necessary. Hans Selye conducted a series of rodent studies which used toxic stressors to facilitate the development of the general adaptation syndrome. To our knowledge, normal exercise in humans has never been shown to produce a general adaptation syndrome. We question whether …

Limb Occlusion Pressure: A Method To Assess Changes In Systolic Blood Pressure, Zachary W. Bell, Matthew B. Jessee, Kevin T. Mattocks, Samuel L. Buckner, Scott J. Dankel, J. Grant Mouser, Takashi Abe, Jeremy P. Loenneke

Faculty Scholarship

Although often used as a surrogate, comparisons between traditional blood pressure measurements and limb occlusion assessed via hand-held Doppler have yet to be completed. Using limb occlusion pressure as a method of assessing systolic pressure is of interest to those studying the acute effects of blood flow restriction, where the removal of the cuff may alter the physiological response. Purpose: We sought to determine how changes in limb occlusion pressure track with changes in traditional assessments of blood pressure. Basic Procedures: Limb occlusion pressure measured by hand-held Doppler and blood pressure measured by an automatic blood pressure cuff were assessed …

Kinematic Differences Between The Front And Back Squat And Conventional And Sumo Deadlift, Jovana Kasovic, Benjamin Martin, Christopher A. Fahs

Student Scholarship

Differences between the front and back squat and conventional and sumo deadlift. J Strength Cond Res 33(12): 3213–3219, 2019—The average concentric velocity (ACV) of a resistance exercise movement is inversely related to the load lifted. Previous work suggests that different resistance exercises differ in ACV at the same relative load. Currently, there is limited evidence to determine whether the style of exercise (e.g., front or back squat [BS]; sumo-style or conventional-style deadlift) also affects the load-velocity profile or other kinematic variables such as the peak concentric velocity (PCV) and linear displacement (LD). The purpose of this study was to compare …

A Pilot Study To Examine The Impact Of Beta-Alanine Supplementation On Anaerobic Exercise Performance In Collegiate Rugby Athletes, Charles R. Smith, Patrick S. Harty, Richard A. Stecker, Chad M. Kerksick

Faculty Scholarship

Beta-alanine (BA) is a precursor to carnosine which functions as a buffer assisting in the maintenance of intracellular pH during high-intensity efforts. Rugby is a sport characterized by multiple intermittent periods of maximal or near maximal efforts with short periods of rest/active recovery. The purpose of this pilot study was to evaluate the impact of six weeks of beta-alanine supplementation on anaerobic performance measures in collegiate rugby players. Twenty-one male, collegiate rugby players were recruited, while fifteen completed post-testing (Mean ± SD; Age: 21.0 ± 1.8 years, Height: 179 ± 6.3 cm, Body Mass: 91.8 ± 13.3 kg, % Body …

Eight Weeks Of A High Dose Of Curcumin Supplementation May Attenuate Performance Decrements Following Muscle-Damaging Exercise, Ralf Jäger, Martin Purpura, Chad M. Kerksick

Faculty Scholarship

Background: It is known that unaccustomed exercise—especially when it has an eccentric component—causes muscle damage and subsequent performance decrements. Attenuating muscle damage may improve performance and recovery, allowing for improved training quality and adaptations. Therefore, the current study sought to examine the effect of two doses of curcumin supplementation on performance decrements following downhill running. Methods: Sixty-three physically active men and women (21 ± 2 y; 70.0 ± 13.7 kg; 169.3 ± 15.2 cm; 25.6 ± 14.3 body mass index (BMI), 32 women, 31 men) were randomly assigned to ingest 250 mg of CurcuWIN® (50 mg of curcuminoids), 1000 mg …

Eight Weeks Of A High Dose Of Curcumin Supplementation May Attenuate Performance Decrements Following Muscle-Damaging Exercise, Ralf Jäger, Martin Purpura, Chad Kerksick

Faculty Scholarship

Background: It is known that unaccustomed exercise—especially when it has an eccentric component—causes muscle damage and subsequent performance decrements. Attenuating muscle damage may improve performance and recovery, allowing for improved training quality and adaptations. Therefore, the current study sought to examine the effect of two doses of curcumin supplementation on performance decrements following downhill running. Methods: Sixty-three physically active men and women (21 ± 2 y; 70.0 ± 13.7 kg; 169.3 ± 15.2 cm; 25.6 ± 14.3 body mass index (BMI), 32 women, 31 men) were randomly assigned to ingest 250 mg of CurcuWIN® (50 mg of curcuminoids), 1000 mg …

Common Habits, Adverse Events, And Opinions Regarding Pre-Workout Supplement Use Among Regular Consumers, Andrew R. Jagim, Clayton L. Camic, Patrick S. Harty

Faculty Scholarship

The purpose of the present study was to examine characteristics of multi-ingredient pre-workout supplement (MIPS) users, their common patterns/habits of MIPS ingestion, and their associated feelings about the effectiveness and safety of this class of supplements. An online electronic survey was distributed through social media to assess self-reported supplementation practices and preferences among adult males and females who reported regular MIPS use. A total of 1045 individuals responded, with 872 of these individuals (males: n = 636, 72.9%; females: n = 233, 26.7%; mean ± SD; age = 27.7 ± 7.9 years; training age = 8.2 ± 7.3 years) completing …

Factors Related To Average Concentric Velocity Of Four Barbell Exercises At Various Loads, Christopher A. Fahs, Julia C. Blumkaitis, Lindy M. Rossow

Faculty Scholarship

The resistance exercise load is the primarily determinant of the average concentric velocity (ACV) during a repetition. It is unknown whether individual factors such as training experience or anthropometrics also influence the ACV. Previous research has shown the ACV during the 1 repetition maximum (1RM) varies between exercises, but it is not clear whether ACV is different between exercises at various percentages of the 1RM. This information could provide practical guidelines for trainees using ACV to select training loads. Therefore, the purpose of this study was to determine whether training age, current training frequency, limb length, height, and relative strength …

Energy Status And Body Composition Across A Collegiate Women’S Lacrosse Season, Hannah A. Zabriskie, Bradley S. Currier, Patrick S. Harty, Richard A. Stecker, Andrew R. Jagim, Chad M. Kerksick

Faculty Scholarship

Little data is available regarding the energy and nutritional status of female collegiate team sport athletes. Twenty female NCAA Division II lacrosse athletes (mean ± SD: 20.4 ± 1.8 years; 68.8 ± 8.9 kg; 168.4 ± 6.6 cm; 27.9 ± 3% body fat) recorded dietary intake and wore a physical activity monitor over four consecutive days at five different time points (20 days total) during one academic year. Body composition, bone health, and resting metabolic rate were assessed in conjunction with wearing the monitor during off-season, pre-season, and season-play. Body fat percentage decreased slightly during the course of this study …

Effect Of Strength On Velocity And Power During Back Squat Exercise In Resistance-Trained Men And Women, Andrew T. Askow, Justin J. Merrigan, Jonathan M. Neddo, Jonathan M. Oliver, Jason D. Stone, Andrew R. Jagim, Margaret T. Jones

Faculty Scholarship

The purpose was to examine load-velocity and load-power relationships of back squat in resistance-trained men (n = 20, 21.3 ± 1.4 years, 183.0 ± 8.0 cm, 82.6 ± 8.0 kg, 11.5 ± 5.0% total body fat) and women (n = 18; 20.0 ± 1.0 years; 166.5 ± 6.9 cm; 63.9 ± 7.9 kg, 20.3 ± 5.0% body fat). Body composition testing was performed followed by determination of back squat 1 repetition maximum (1RM). After at least 72 hours of recovery, subjects returned to the laboratory and completed 2 repetitions at each of 7 separate loads (30, 40, 50, …

Proprietary Milk Protein Concentrate Reduces Joint Discomfort While Improving Exercise Performance In Non-Osteoarthritic Individuals, Tim N. Ziegenfuss, Chad M. Kerksick, A. William Kedia, Jennifer Sandrock, Betsy Raub, Hector L. Lopez

Faculty Scholarship

Milk and dairy products are known to contain various bioactives with potential anti-inflammatory and immune modulating effects. Previous research has indicated that milk produced from hyperimmunized cows provided meaningful health benefits to individuals suffering from varying degrees of osteoarthritis and rheumatoid arthritis. PURPOSE: To examine the impact of a proprietary milk protein concentrate on joint discomfort and physical function, exercise performance, quality of life and various measures of affect. METHODS: Non-osteoarthritic men (42.5 ± 8.9 years, 176.7 ± 6.7 cm, 89.9 ± 11.5 kg, 28.8 ± 3.5 kg/m2, n = 30) and women (46.4 ± 9.6 years, 163.1 ± 8.2 …

Common Ingredient Profiles Of Multi-Ingredient Pre-Workout Supplements, Andrew R. Jagim, Patrick S. Harty, Clayton L, Camic

Faculty Scholarship

Multi-ingredient pre-workout supplements are a popular class of dietary supplements which are purported to improve exercise performance. However, the composition of these products varies substantially between formulations, thus making comparisons challenging. Therefore, the purpose of this study was to identify a common ingredient profile of top-selling pre-workout supplements and to compare ingredient dosages to established efficacious values. The top 100 commercially available pre-workout products were analyzed for listed ingredients and amounts, if available, from the supplement facts panel. The mean ± SD number of ingredients per supplement (n = 100) was 18.4 ± 9.7 with 8.1 ± 9.9 of these …