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Medicine

D-Index
129
Citations
49362
World Ranking
2629
National Ranking
29

Overview

Keijo Häkkinen is affiliated with the University of Jyväskylä in Finland and specializes in medicine with a focus on orthopedics, sports medicine, and related subfields such as complementary and alternative medicine, physiology, rehabilitation, and cell biology.

Their research largely centers on topics related to sports performance and training, sports injuries and prevention, cardiovascular and exercise physiology, exercise and physiological responses, muscle metabolism and nutrition, muscle activation and electromyography studies, as well as occupational health and performance.

  • Sports Performance and Training
  • Sports injuries and prevention
  • Cardiovascular and exercise physiology
  • Exercise and Physiological Responses
  • Muscle metabolism and nutrition
  • Muscle activation and electromyography studies
  • Occupational Health and Performance

They have published extensively in a variety of scientific journals, with frequent appearances in:

  • International Journal of Environmental Research and Public Health
  • Medicine & Science in Sports & Exercise
  • International Journal of Sports Medicine
  • Frontiers in Sports and Active Living
  • European Journal of Applied Physiology

Some recent papers authored or co-authored by Keijo Häkkinen include:

  • "Resistance Training Load Effects on Muscle Hypertrophy and Strength Gain: Systematic Review and Network Meta-analysis" (2020), published in Medicine & Science in Sports & Exercise
  • "Validity of Using Velocity to Estimate Intensity in Resistance Exercises in Men and Women" (2020), published in International Journal of Sports Medicine
  • "Changes in sprint performance and sagittal plane kinematics after heavy resisted sprint training in professional soccer players" (2020), published in PeerJ
  • "Exercise medicine for cancer cachexia: targeted exercise to counteract mechanisms and treatment side effects" (2022), published in Journal of Cancer Research and Clinical Oncology
  • "Inter-individual variation in response to resistance training in cardiometabolic health indicators" (2020), published in Scandinavian Journal of Medicine and Science in Sports

Frequent co-authors in their research projects include:

  • Robert U. Newton
  • William J. Kraemer
  • Simon Walker
  • Heikki Kyröläinen
  • Juha P. Ahtiainen

Best Publications

  • Changes in agonist-antagonist EMG, muscle CSA, and force during strength training in middle-aged and older people

    K. Häkkinen;M. Kallinen;M. Izquierdo;K. Jokelainen

  • Explosive‐strength training improves 5‐km running time by improving running economy and muscle power

    L. Paavolainen;K. Hakkinen;I. Hamalainen;A. Nummela

  • Neuromuscular adaptations during concurrent strength and endurance training versus strength training

    K. Häkkinen;M. Alen;W. J. Kraemer;E. Gorostiaga

  • Effects of heavy-resistance training on hormonal response patterns in younger vs. older men.

    William J. Kraemer;Keijo Häkkinen;Robert U. Newton;Bradley C. Nindl

  • Changes in isometric force‐ and relaxation‐time, electromyographic and muscle fibre characteristics of human skeletal muscle during strength training and detraining

    K. Häkkinen;M. Alén;P. V. Komi

  • Muscle hypertrophy, hormonal adaptations and strength development during strength training in strength-trained and untrained men.

    Juha P. Ahtiainen;Arto Pakarinen;Markku Alen;William J. Kraemer

  • Neuromuscular adaptation during prolonged strength training, detraining and re-strength-training in middle-aged and elderly people.

    K. Häkkinen;M. Alen;M. Kallinen;R. U. Newton

  • Changes in Muscle Morphology, Electromyographic Activity, and Force Production Characteristics During Progressive Strength Training in Young and Older Men

    Keijo Häkkinen;Robert U. Newton;Scott E. Gordon;Matthew McCormick

  • Selective muscle hypertrophy, changes in EMG and force, and serum hormones during strength training in older women.

    Keijo Häkkinen;Arto Pakarinen;William J. Kraemer;Arja Häkkinen

  • Changes in electromyographic activity, muscle fibre and force production characteristics during heavy resistance/power strength training in middle-aged and older men and women.

    K. Häkkinen;W. J. Kraemer;R. U. Newton;M. Alen

  • Electromyographic changes during strength training and detraining.

    Keijo Hakkinen;Paavo V. Komi

  • Differential effects of strength training leading to failure versus not to failure on hormonal responses, strength, and muscle power gains

    Mikel Izquierdo;Javier Ibañez;Juan José González-Badillo;Keijo Häkkinen

  • Maximal and explosive force production capacity and balance performance in men of different ages

    M. Izquierdo;X. Aguado;R. Gonzalez;J. L. López

  • Influence of load and stretch shortening cycle on the kinematics, kinetics and muscle activation that occurs during explosive upper-body movements.

    Robert U. Newton;Aron J. Murphy;Brendan J. Humphries;Greg J. Wilson

  • Effects of ballistic training on preseason preparation of elite volleyball players.

    Robert Newton;William Kraemer;Keijo Häkkinen

  • Kinematics, Kinetics, and Muscle Activation during Explosive Upper Body Movements

    Robert U. Newton;William J. Kraemer;Keijo Häkkinen;Brendan J. Humphries

  • Low-volume circuit versus high-volume periodized resistance training in women.

    James O. Marx;Nicholas A. Ratamess;Bradley C. Nindl;Lincoln A. Gotshalk

  • Acute hormonal responses to two different fatiguing heavy-resistance protocols in male athletes.

    K Häkkinen;A Pakarinen

  • Maximal strength and power characteristics in isometric and dynamic actions of the upper and lower extremities in middle-aged and older men.

    M Izquierdo;J Ibañez;E Gorostiaga;M Garrues

  • Effects of long-term training specificity on maximal strength and power of the upper and lower extremities in athletes from different sports.

    Mikel Izquierdo;Keijo Häkkinen;Juan J Gonzalez-Badillo;Javier Ibáñez

Frequent Co-Authors

William J. Kraemer
William J. Kraemer The Ohio State University
Robert U. Newton
Robert U. Newton Edith Cowan University
Arja Häkkinen
Arja Häkkinen University of Jyväskylä
Jeff S. Volek
Jeff S. Volek The Ohio State University
Markku Alen
Markku Alen Oulu University Hospital
Paavo V. Komi
Paavo V. Komi University of Jyväskylä
Mikel Izquierdo
Mikel Izquierdo Universidad Publica De Navarra
Nicholas A. Ratamess
Nicholas A. Ratamess College of New Jersey
Carl M. Maresh
Carl M. Maresh The Ohio State University
Markus Perola
Markus Perola Finnish Institute for Health and Welfare

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