Steffen Held
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View article: Partial Range, Full Gains? The Effect of 8 Weeks of Partial Range of Motion Training at Long Muscle Lengths on Elbow Flexor Hypertrophy and Strength in Trained Individuals
Partial Range, Full Gains? The Effect of 8 Weeks of Partial Range of Motion Training at Long Muscle Lengths on Elbow Flexor Hypertrophy and Strength in Trained Individuals Open
We investigated the effects of initial partial range of motion (pROMinitial; 0°–70°) and full range of motion (fROM; 0°–140°) training on elbow flexor hypertrophy and strength in resistance‐trained individuals. Thirteen individuals (males:…
View article: HRV‐Based Thresholds in Rowing: Validity and Reliability Assessment
HRV‐Based Thresholds in Rowing: Validity and Reliability Assessment Open
The concurrent validity of lactate thresholds (LT1, LT2) and between‐day reliability data from the rowing‐specific heart rate variability (HRV)‐based thresholds (HRVT) were examined. Thus, 21 rowers (19.6 ± 2.8 years; 1.78 ± 0.09 m; 72.8 ±…
View article: How reliable is the labeling of a commercial phytosteroid product? A 12-week randomized double-blind training study
How reliable is the labeling of a commercial phytosteroid product? A 12-week randomized double-blind training study Open
This study demonstrated that the prescribed resistance training protocol resulted in significant anabolic and performance-enhancing effects that did not differ between groups. The lack of group-specific differences suggests that the tested…
View article: Strength Gains Across Performance Levels and Sexes: A Meta-Analytical Perspective
Strength Gains Across Performance Levels and Sexes: A Meta-Analytical Perspective Open
Background Strength adaptations decrease with increasing training status. However, the inconsistent classification of training status in sports science impairs the comparability and interpretation of findings. This meta-analysis therefore …
View article: Self-Reported Physical Activity Among Individuals with Diabetes Mellitus in Germany—Identifying Potential Barriers and Facilitators
Self-Reported Physical Activity Among Individuals with Diabetes Mellitus in Germany—Identifying Potential Barriers and Facilitators Open
Background/Objectives: Physical activity is a cornerstone of diabetes mellitus (DM) management and is strongly recommended in the American Diabetes Association (ADA)’s guidelines. This study aims to investigate the self-reported physical a…
View article: Optimizing Resistance Training Outcomes: Comparing In-Person Supervision, Online Coaching, and Self-Guided Approaches: A Randomized Controlled Trial
Optimizing Resistance Training Outcomes: Comparing In-Person Supervision, Online Coaching, and Self-Guided Approaches: A Randomized Controlled Trial Open
Gavanda, S, Held, S, Schrey, S, Oberwetter, K, Lazzaro, P-GM, Pergelt, M, and Geisler, S. Optimizing resistance training outcomes: comparing in-person supervision, online coaching, and self-guided approaches: a randomized controlled trial.…
View article: Effects of Repeated 1RM Testing on Strength, Velocity, and Load-Velocity Profiling: A Repeated Measurement Trial
Effects of Repeated 1RM Testing on Strength, Velocity, and Load-Velocity Profiling: A Repeated Measurement Trial Open
Maximal strength assessment, particularly the one-repetition maximum (1RM) test, is essential in resistance training and sports science. Velocity-based metrics like mean concentric velocity (MCV) at 1RM and load-velocity profiling enhance …
View article: Six weeks of polarized functional interval training with large training load reductions does not affect performance gains compared to traditional workouts
Six weeks of polarized functional interval training with large training load reductions does not affect performance gains compared to traditional workouts Open
Purpose High-intensity functional interval training (HIFT) is predominantly composed of high exercise training intensities (HiT) and loads. Both have been linked to a higher risk of overtraining and injuries in inexperienced populations. A…
View article: Post-activation performance enhancement (PAPE) protocols do not further increase jumping performance beyond warm-up effects: findings from three acute randomized crossover trials
Post-activation performance enhancement (PAPE) protocols do not further increase jumping performance beyond warm-up effects: findings from three acute randomized crossover trials Open
Introduction: Post-activation performance enhancement (PAPE) cannot be clearly distinguished from and may be explained in large by warm-up effects. To disentangle PAPE from a systemic warm-up effect, we conducted three randomized crossover…
View article: Are calves trainable? Low-intensity calf muscle training with or without blood flow restriction: a randomized controlled trial
Are calves trainable? Low-intensity calf muscle training with or without blood flow restriction: a randomized controlled trial Open
Objectives Whether low-load resistance training (RT) without muscle failure, with or without blood flow restriction (BFR), is sufficient to increase strength and muscle growth of calf muscles in trained individuals is still unclear. This s…
View article: Handcycling with concurrent lower body low-frequency electromyostimulation significantly increases acute oxygen uptake in elite wheelchair basketball players: an acute crossover trial
Handcycling with concurrent lower body low-frequency electromyostimulation significantly increases acute oxygen uptake in elite wheelchair basketball players: an acute crossover trial Open
Objective: Wheelchair basketball (WCB) demands high-intensity training due to its intermittent nature. However, acute oxygen uptake (V˙O2) in handcycling is restricted. Combining handcycling with low-frequency electromyostimulation (LF-EMS…
View article: Reliability of the Maximal Lactate Accumulation Rate in Rowers
Reliability of the Maximal Lactate Accumulation Rate in Rowers Open
The maximal lactate accumulation rate (VLamax) has been linked to lactic anaerobic performance. Hence, accurate and reliable assessment is crucial in sport-specific performance testing. Thus, between-day reliability data of rowing-specific…
View article: Effects of Expertise on Muscle Activity during the Hang Power Clean and Hang Power Snatch Compared to Snatch and Clean Pulls – An Explorative Analysis
Effects of Expertise on Muscle Activity during the Hang Power Clean and Hang Power Snatch Compared to Snatch and Clean Pulls – An Explorative Analysis Open
The purpose was to compare the electromyographic (EMG) activity of the Hang Power Clean (HPC) and Hang Power Snatch (HPS) with the Hang Clean Pull (HCP) and Hang Snatch Pull (HSP). Additionally, the influence of weightlifting expertise (be…
View article: Acute and Chronic Performance Enhancement in Rowing: A Network Meta-analytical Approach on the Effects of Nutrition and Training
Acute and Chronic Performance Enhancement in Rowing: A Network Meta-analytical Approach on the Effects of Nutrition and Training Open
Introduction This systematic review and network meta-analysis assessed via direct and indirect comparison the occurrence and magnitude of effects following different nutritional supplementation strategies and exercise interventions on acut…
View article: Effects of Four Weeks of Static vs. Dynamic Bodyweight Exercises with Whole-Body Electromyostimulation on Jump and Strength Performance: A Two-Armed, Randomized, Controlled Trial
Effects of Four Weeks of Static vs. Dynamic Bodyweight Exercises with Whole-Body Electromyostimulation on Jump and Strength Performance: A Two-Armed, Randomized, Controlled Trial Open
The combination of strength training with complementary whole-body electromyostimulation (WB-EMS) and plyometric exercises has been shown to increase strength and jumping performance in athletes. In elite sport, however, the mesocycles of …
View article: Restricted nasal-only breathing during self-selected low intensity training does not affect training intensity distribution
Restricted nasal-only breathing during self-selected low intensity training does not affect training intensity distribution Open
Introduction: Low-intensity endurance training is frequently performed at gradually higher training intensities than intended, resulting in a shift towards threshold training. By restricting oral breathing and only allowing for nasal breat…
View article: Effects of Trail Running versus Road Running—Effects on Neuromuscular and Endurance Performance—A Two Arm Randomized Controlled Study
Effects of Trail Running versus Road Running—Effects on Neuromuscular and Endurance Performance—A Two Arm Randomized Controlled Study Open
Running on less predictable terrain has the potential to increase the stimulation of the neuromuscular system and can boost aerobic performance. Hence, the purpose of this study was to analyze the effects of trail versus road running on ne…
View article: Increased oxygen uptake in well-trained runners during uphill high intensity running intervals: A randomized crossover testing
Increased oxygen uptake in well-trained runners during uphill high intensity running intervals: A randomized crossover testing Open
The time spent above 90% of maximal oxygen uptake ( O 2 max) during high-intensity interval training (HIIT) sessions is intended to be maximized to improve O 2 max. Since uphill running serves as a promising means to increase metabolic c…
View article: Exercise based reduction of falls in communitydwelling older adults: a network meta-analysis
Exercise based reduction of falls in communitydwelling older adults: a network meta-analysis Open
Background Traditional meta-analyses with pairwise direct comparison revealed that a variety of exercise-based training interventions can prevent falls in community-dwelling older adults. This network meta-analysis adds value by comparing …
View article: Blood Flow Restricted Cycling Impairs Subsequent Jumping But Not Balance Performance Slightly More Than Non-Restricted Cycling: An Acute Randomized Controlled Cross-Over Trial
Blood Flow Restricted Cycling Impairs Subsequent Jumping But Not Balance Performance Slightly More Than Non-Restricted Cycling: An Acute Randomized Controlled Cross-Over Trial Open
Chronic blood flow restriction (BFR) training has been shown to improve drop jumping (DJ) and balance performance. However, the acute effects of low intensity BFR cycling on DJ and balance indices have not yet been examined. 28 healthy you…
View article: Similar strength gains at lower perceived efforts via cluster set vs. traditional home-based online training: A 6 weeks randomized controlled trial
Similar strength gains at lower perceived efforts via cluster set vs. traditional home-based online training: A 6 weeks randomized controlled trial Open
Cluster Training (CT) has been shown to induce strength at lower perceived efforts compared to traditional training (TRT) with sets performed to repetition failure. These findings have not yet been extended to remote online training in mid…
View article: The effectiveness of traditional vs. velocity-based strength training on explosive and maximal strength performance: A network meta-analysis
The effectiveness of traditional vs. velocity-based strength training on explosive and maximal strength performance: A network meta-analysis Open
This network meta-analysis aimed at evaluating the effectiveness of different velocity-based (VBT) and traditional 1RM-based resistance training (TRT) interventions on strength and power indices in healthy participants. The research was co…
View article: Validity and Reliability of a Commercial Force Sensor for the Measurement of Upper Body Strength in Sport Climbing
Validity and Reliability of a Commercial Force Sensor for the Measurement of Upper Body Strength in Sport Climbing Open
Recreational and professional climbing is gaining popularity. Thus, valid and reliable infield strength monitoring and testing devices are required. This study aims at assessing the validity as well as within- and between-day reliability o…
View article: Handcycling with concurrent lower body low-frequency electromyostimulation significantly increases acute oxygen uptake: implications for rehabilitation and prevention
Handcycling with concurrent lower body low-frequency electromyostimulation significantly increases acute oxygen uptake: implications for rehabilitation and prevention Open
Background Acute increases in exercise-induced oxygen uptake (V̇O 2 ) is crucial for aerobic training adaptations and depends on how much muscle mass is involved during exercising. Thus, handcycling is per se limited for higher maximal oxyg…