Circadian variations in anaerobic threshold

Kazuki Nishimura, Koji Nagasaki, Hidetaka Yamaguchi, Akira Yoshioka, Yuka Nose, Sho Onodera, Noboru Takamoto

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

This study aimed to determine whether certain respiratory and cardiovascular parameters associated with anaerobic threshold (AT), measured during graded exercise testing, occur at lower intensities in the morning than in the evening. Ten healthy Japanese men volunteered to participate in this study, which involved two conditions that were performed at different times of day: morning (M) exercise was performed between 9:00 and 10:00 a.m., and afternoon (A) exercise was performed between 4:00–6:00 p.m. After resting supine for 30 minutes, each subject performed graded cycle ergometer exercise testing comprising 90-second stages. Exercise intensity was initially 10 W and was increased by 10 W for each stage. Heart rate (HR), blood pressure (BP), absolute double product (DP), cardiac autonomic nervous system modulation, and ventilatory volume (VE) were measured during each exercise stage. Ventilatory threshold (VT), the double product breaking point (DPBP), and breaking point of the natural log of high frequency (ln HF) (HFBP) were reached at a lower exercise intensity in the M condition than in the A condition (p

Original languageEnglish
Pages (from-to)164-170
Number of pages7
JournalKinesiology
Volume46
Issue number2
Publication statusPublished - 2014

Fingerprint

Anaerobic Threshold
Exercise
Autonomic Nervous System
Heart Rate
Blood Pressure

Keywords

  • Cardiac autonomic nervous system
  • Circadian rhythm
  • Double product
  • Ventilatory volume

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

Nishimura, K., Nagasaki, K., Yamaguchi, H., Yoshioka, A., Nose, Y., Onodera, S., & Takamoto, N. (2014). Circadian variations in anaerobic threshold. Kinesiology, 46(2), 164-170.

Circadian variations in anaerobic threshold. / Nishimura, Kazuki; Nagasaki, Koji; Yamaguchi, Hidetaka; Yoshioka, Akira; Nose, Yuka; Onodera, Sho; Takamoto, Noboru.

In: Kinesiology, Vol. 46, No. 2, 2014, p. 164-170.

Research output: Contribution to journalArticle

Nishimura, K, Nagasaki, K, Yamaguchi, H, Yoshioka, A, Nose, Y, Onodera, S & Takamoto, N 2014, 'Circadian variations in anaerobic threshold', Kinesiology, vol. 46, no. 2, pp. 164-170.
Nishimura K, Nagasaki K, Yamaguchi H, Yoshioka A, Nose Y, Onodera S et al. Circadian variations in anaerobic threshold. Kinesiology. 2014;46(2):164-170.
Nishimura, Kazuki ; Nagasaki, Koji ; Yamaguchi, Hidetaka ; Yoshioka, Akira ; Nose, Yuka ; Onodera, Sho ; Takamoto, Noboru. / Circadian variations in anaerobic threshold. In: Kinesiology. 2014 ; Vol. 46, No. 2. pp. 164-170.
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