Science AI Journal
Medicine · Research topic

Open research questions in Exercise and Physiological Responses

69 unresolved questions extracted from the limitations and future-work sections of 719 Exercise and Physiological Responses papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • The immune effects of chronic exercise and/or exercise training in healthy children and adolescents have not been well-documented, and there is only limited evidence to suggest that moderate to high levels of habitual physical activity are associated with a reduction in the incidence of infection and illness in youth.

    Paediatric exercise immunology: Health and clinical applications · 2026 · DOI

  • No studies were identified that investigated the response of acetylcholine, VIP, CGRP, substance p, serotonin, NGF or GDNF to heavy resistance exercise.

    Acute effects of heavy resistance exercise on biomarkers of neuroendocrine- immune regulation in healthy adults: a systematic review · 2026 · DOI

  • Exercise has shown promise over recent years as a mode of rehabilitation that alleviates multiple TBI symptoms; but there is a lack of controlled large-scale studies and limited research into the underlying mechanisms.

    Traumatic Brain Injury Rehabilitation: An Exercise Immunology Perspective · 2026 · DOI

  • Future research is needed to assess the clinical implications of these changes, for example on the efficacy of monoclonal antibody therapies dependent on CDC.

    The effects of exercise on complement system proteins in humans: a systematic scoping review · 2026 · DOI

  • The effects of acute exercise on cytokine expression and apoptosis of immune cells in the central nervous system (CNS) have not been well characterized.

    Immune Cell Inflammatory Cytokine Responses Differ Between Central and Systemic Compartments in Response to Acute Exercise in Mice · 2026 · DOI

  • Nevertheless, up to now only few studies have addressed this issue and there is hardly any evidence regarding a direct relationship between DNA or chromosomal damage and inflammatory responses in the context of exercise.

    Exercise-induced DNA damage: Is there a relationship with inflammatory responses? · 2026 · DOI

  • While the causes of persistent fatigue among cancer survivors are not yet fully understood, accumulating evidence suggests that several pathways, including chronic inflammation, autonomic imbalance, HPA-axis dysfunction, and/or mitochondrial damage, could contribute towards the disruption of normal neuronal function and result in the symptom of cancer-related fatigue.

    Exercise, inflammation, and fatigue in cancer survivors · 2026 · DOI

  • With the exception of IL-6, the sources of systemic cytokines following exercise remain unclear The satellite cell response to severe muscle damage is related to regeneration, whereas the biological significance of satellite cell proliferation after mild damage or non-damaging exercise remains uncertain.

    Leucocytes, cytokines and satellite cells: what role do they play in muscle damage and regeneration following eccentric exercise? · 2026 · DOI

  • However, their fatigue specificity remains to be established and requires validation using independent fatigue criteria, non-fatiguing exercise controls, matrix-specific analyses, and adequately powered diverse cohorts.

    Candidate Metabolic Biomarkers for Physical Fatigue Assessment: An Integrative Meta-Analysis and Exploratory Liquid Chromatography–Mass Spectrometry Pilot Study of Acute Exercise Responses · 2026 · DOI

  • These results permit underlining the significance of individu- alizing training loads and recovery strategies in this population and imply a potential role for the muscle-immune-gut axis in exercise adaptation in individuals with type 1 diabetes; however, further research in larger and more diverse cohorts of individuals with this condition is warranted to confirm the generalizability of these findings.

    Altered muscle-immune-gut axis response to eccentric exercise in men with well-controlled type 1 diabetes: a pilot study · 2026 · DOI

  • Although increases in resistance training (RT) volume are used to increase mechanical stress, it remains uncertain whether large and abrupt volume progressions could exceed muscle adaptive capacity by disrupting the balance between anabolic and catabolic signaling.

    Large increases in resistance training volume do not impair muscle hypertrophy or anabolic-catabolic molecular signaling in trained individuals · 2026 · DOI

  • Further research is needed to discover factors that determine EIH in healthy humans. Exercise intensity can impact the EIH response, but the research results are inconsistent and vary depending on the type of exercise and the measurement tools for assessing intensity.

    Exercise-induced hypoalgesia in response to different exercise types and intensities: A narrative review · 2026 · DOI

  • Several limitations should be acknowledged. The sample size (n = 22) may have limited power to detect small­to­medium effects (~51% power for d = 0.5), suggesting Type II error risk. The trivial effect sizes observed (d = 0.09­0.16) suggest any true effects are likely small. Though a seven­day washout was employed, carry­over effects cannot be entirely excluded. Neurophysiological mechanisms were not directly measured; therefore, mechanistic interpretations are speculative. Finally, RPE data were collected but not formally analyzed, precluding conclusions regarding perceptual responses.

    The effect of caffeine mouth rinsing on high-intensity intermittent exercise and physiological variables · 2026 · DOI

  • The ergogenic effects of L-arginine endure throughout a range of exercise modalities; however, there is limited information proving its effectiveness during CrossFit® programs.

    Effects of Acute L-Arginine Supplementation on the Performance of Recreationally Trained Crossfit® Males: A Randomized Double-Blind Placebo-Controlled Trial · 2026 · DOI

  • Eccentric-oriented strength training has been widely used to enhance muscle strength and hypertrophy in various musculoskeletal conditions; however, its specific application within ACL rehabilitation remains insufficiently explored.

    Eccentric-Oriented Strength Training in Anterior Cruciate Ligament Rehabilitation: A Scoping Review · 2026 · DOI

  • Established Sports Medicine. 2023;53(7):1315–1333. DOI: 10.1007/s40279-023- 01836-x Biomarkers. 3) Bonilla DA, Kreider RB, Stout JR, Forero DA, Kerksick CM, Roberts MD, et al. Metabolic Basis of Creatine in Health and Disease: A Bioinformatics- Assisted Review. Nutrients. 2021;13(4):1238. DOI: 10.3390/nu13041238 4) Moghadam-Kia S, Oddis CV, Aggarwal R. Approach to Asymptomatic Creatine Kinase Elevation.

    Serum Creatine Kinase and Lactate Dehydrogenase as Markers of ExerciseInduced Muscle Adaptation: A Comparative Study in Athletes and Sedentary Individuals · 2026 · DOI

  • The intensity of exercise, timing of sample collection relative to physical activity, and recovery status were not standardized, which may have influenced enzyme levels. Additionally, the cross-sectional design limits the ability to establish causal relationships.

    Serum Creatine Kinase and Lactate Dehydrogenase as Markers of ExerciseInduced Muscle Adaptation: A Comparative Study in Athletes and Sedentary Individuals · 2026 · DOI

  • This study has several limitations that should be acknowl- edged. First, the absence of a non-fasting control group limits the ability to isolate the specific effects of Ramadan fasting from seasonal or training-related influences. Sec- ond, the relatively small sample size restricts the gener- alizability of the findings beyond the studied population. In addition, the monitoring period was confined to Ramadan and the immediate post-fasting phase, which may have precluded the detection of delayed or cumu- lative physiological adaptations. The unique hot and arid climate of Illizi may also have amplified dehydra- tion-related responses, thereby limiting extrapolation of the results to athletes training in more temperate environments. Furthermore, muscle damage and inflammatory responses were assessed indirectly through biochemical markers such as creatine kinase and C-reactive protein, which do not fully capture neuromuscular, structural, or immune system dynamics during fasting. The test battery was also limited, as external load monitoring (e.g., GPS- based match-performance metrics) and direct neuro- muscular assessments were not included. Future research should therefore adopt multicenter designs with larger cohorts and, where feasible, include appropriate control groups. Extending monitoring beyond Ramadan would allow evaluation of delayed recovery or cumulative effects. The integration of micro- technology tools (e.g., GPS tracking), comprehensive strength and power assessments, and advanced diagnos- tic techniques (e.g., electromyography, tensiomyography, and ultrasound imaging) would provide a more complete characterization of muscle function, injury risk, and recovery during fasting. Moreover, future studies would benefit from expanded biomarker panels incorporating immunological, hor- monal, and neuroendocrine indicators (e.g., cortisol, serotonin, dopamine), as well as acid–base balance mark- ers (e.g., blood pH), to better elucidate the physiological and psychological mechanisms underlying fasting-related adaptations. Finally, examining older or master ath- lete populations, as well as athletes competing at differ- ent performance levels, may offer additional insight into long-term adaptive responses to Ramadan fasting.

    Post-match changes in biomarkers and fatigue-related physical performance parameters in adult amateur soccer players: the effects of fasting · 2026 · DOI

  • There is insufficient data to determine a cause of this phenomenon, however prevailing theories include: increased mucosal immunity, increased NK-cells activity, and hormonal adaptations.

    Preventive influence of regular physical exercise on the incidence of common cold - a literature review · 2025 · DOI

  • Significant acute cardiovascular, metabolic, and endocrine changes have been traced to short-lasting cold water immersion (CWI); however, the long-term impact of recurrent CWI on atherogenesis, lipid parameters, and fat distribution has not yet been studied.

    Effect of repeatedly applied cold water immersion on subclinical atherosclerosis, inflammation, fat accumulation and lipid profile parameters of volunteers · 2023 · DOI

  • Previous studies have shown that several weeks of beta-alanine (BA) supplementation increases anaerobic work capacity and decreases muscular fatigue, but limited research was conducted on elite martial arts athletes.

    Beta-alanine supplementation and anaerobic performance in highly trained judo athletes · 2022 · DOI

  • However, these findings were limited to MVIC torque production measured at 2 different times, and further research examining these relationships at multiple times and using other measures of neuromuscular function is needed.

    Isometric Knee-Extension and Knee-Flexion Torque Production During Early Follicular and Postovulatory Phases in Recreationally Active Women · 2010 · DOI

  • Although the IEMG changes due to conditioning were somewhat different in the two experimental groups, it could not be established that either type of conditioning caused increase in the desynchronized firing of motor units.

    Effect of Eccentric and Concentric Muscle Conditioning on Tension and Electrical Activity of Human Muscle* · 1972 · DOI

  • The limited evidence regarding the effects on BDNF and ACTH allows no firm conclusions to be drawn about their response to heavy resistance exercise.

    Acute effects of heavy resistance exercise on biomarkers of neuroendocrine- immune regulation in healthy adults: a systematic review · 2026 · DOI

  • Mixed results were found for cortisol (median: 0%), suggesting that its response might be more sensitive to the configuration of the exercise scheme.

    Acute effects of heavy resistance exercise on biomarkers of neuroendocrine- immune regulation in healthy adults: a systematic review · 2026 · DOI

Most-cited papers in Exercise and Physiological Responses

Most recent work

Find a gap in your own Exercise and Physiological Responses sub-topic

This page shows what the Exercise and Physiological Responses literature already flags as unresolved. To narrow it to your specific question, run the guided finder — it searches the gap library on demand and checks candidates against 250M+ OpenAlex works.

Open the Research Gap Finder →

Related topics in Medicine

Substance Abuse Treatment and Outcomes
989 open questions
Artificial Intelligence in Healthcare and Education
607 open questions
Attention Deficit Hyperactivity Disorder
448 open questions
Physical Activity and Health
436 open questions
Smoking Behavior and Cessation
402 open questions
Innovations in Medical Education
364 open questions
Dementia and Cognitive Impairment Research
363 open questions
HIV/AIDS Research and Interventions
342 open questions
69 open questions have been extracted from the limitations and future-work passages of 719 Exercise and Physiological Responses papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

Tools for your next paper

Gaps & Literature SearchFind open questions in any field — 120,000+ open gaps mined from our own library.Pre-CheckIs your paper ready? A Tier 1–5 acceptance probability in seconds.Journal FinderA ranked shortlist of target journals from a 17,500-venue index.Duplicate Publication CheckerCheck prior-publication & salami-slicing risk across 8 sources.Citation GeneratorFreeA DOI or title → APA, MLA, Vancouver, Chicago, BibTeX, RIS. No signup.Graphical Abstract MakerFreeTurn your findings into a colorblind-safe graphical abstract.

Compare the category — Honest roundups of the AI research tools, ours listed alongside the alternatives.

Command palette

Jump anywhere, run any action.