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Igawa T, Hara T, Ishizaka M, Sawaya Y, Ito A, Yakabi A, Kubo A. Changes in muscle strength and endurance of professional cyclists due to PycnoRacer TM. J Phys Ther Sci 2021; 33:339-344. [PMID: 33935358 PMCID: PMC8079890 DOI: 10.1589/jpts.33.339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 01/14/2021] [Indexed: 11/24/2022] Open
Abstract
[Purpose] Changes in the muscle performance of professional motorized athletes using
pycnogenol-containing supplements have not been clarified. The purpose of this study was
to evaluate the changes in muscle strength and endurance of professional cyclists during 4
weeks of training with the use of PycnoRacerTM. [Participants and Methods]
Eight professional cyclists were requested to consume PycnoRacerTM twice/day
for 4 weeks. The muscle endurance test consisted of 50 consecutive knee flexion and
extension exercises at 180°/sec using an isokinetic torque machine before and after
PycnoRacerTM administration. The athletes’ body composition, including leg
muscle mass, was also measured. [Results] The maximum flexor muscle torque and 41st–50th
flexion muscle torque values significantly improved after supplement consumption (average
improvement of 8.5%; range, 13.3–67.2%). The leg muscle mass and body composition did not
differ significantly between the two conditions. The participants showed an average
improvement of 31.8% (range, 0.9–67.8%) in their total work with cycling training. No
adverse events were observed. [Conclusion] The use of PycnoRacerTM may improve
training, muscle strength, and endurance, but not muscle mass.
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Affiliation(s)
- Tatsuya Igawa
- Department of Physical Therapy, School of Health Science, International University of Health and Welfare: 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan.,Department of Rehabilitation, International University of Health and Welfare Hospital, Japan
| | - Tsuyoshi Hara
- Department of Physical Therapy, School of Health Science, International University of Health and Welfare: 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan.,Department of Rehabilitation, International University of Health and Welfare Hospital, Japan
| | - Masahiro Ishizaka
- Department of Physical Therapy, School of Health Science, International University of Health and Welfare: 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan
| | - Yohei Sawaya
- Department of Physical Therapy, School of Health Science, International University of Health and Welfare: 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan.,Department of Day Rehabilitation, Nishinasuno General Home Care Center, Japan
| | - Akihiro Ito
- Department of Physical Therapy, School of Health Science, International University of Health and Welfare: 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan.,Department of Rehabilitation, International University of Health and Welfare Hospital, Japan
| | - Akihiro Yakabi
- Department of Physical Therapy, School of Health Science, International University of Health and Welfare: 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan.,Department of Rehabilitation, International University of Health and Welfare Shioya Hospital, Japan
| | - Akira Kubo
- Department of Physical Therapy, School of Health Science, International University of Health and Welfare: 2600-1 Kitakanemaru, Ohtawara, Tochigi 324-8501, Japan.,Department of Rehabilitation, International University of Health and Welfare Shioya Hospital, Japan
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