Publications by authors named "Yasutake Sato"
Article Synopsis
- Nitrogen is crucial for plant development, particularly in flowering, and low nitrogen levels can accelerate flowering, though the specific molecular mechanisms are still unclear.
- Researchers identified the FBH4 transcription factor as a key player in regulating flowering in response to low nitrogen, noting that changes in its phosphorylation state impact its activity.
- The study also highlights how the protein SnRK1 negatively affects flowering and nutrient recycling under high nitrogen conditions, ultimately showing how nitrogen levels influence flowering time and plant adaptation to nutrient scarcity.
In order to clarify whether or not ventilatory and circulatory responses to hypoxia and hypercapnia at rest in male vocalists (n = 11) are identical to those of untrained subjects (n = 11), ventilatory responses to hypoxia (HVR) and hypercapnia (HCVR) were estimated as the slope of regression relating .VI to SaO(2) (Delta.VI/DeltaSaO(2)) or the slope factor (A) for the .
View Article and Find Full Text PDFThe purpose of the present study was to test the hypothesis that the ventilatory response to exercise at sea level may increase after intermittent hypoxic exposure for 1 week, accompanied by an increase in hypoxic or hypercapnic ventilatory chemosensitivity. One group of eight subjects (hypoxic group) were decompressed in a chamber to 432 torr (where 1 torr=1.0 mmHg, simulating an altitude of 4,500 m) over a period of 30 min and maintained at that pressure for 1 h daily for 7 days.
View Article and Find Full Text PDFThe purpose of the present study was to examine the changes in maximum voluntary isometric contraction (MVC) in the contralateral untrained limb during unilateral resistance training and detraining, and to examine the factors inducing these changes by means of electrophysiological techniques. Nine healthy males trained their plantar flexor muscles unilaterally 4 day-s x week(-1) for 6 weeks using 3 sets of 10-12 repetitions at 70-75% of one-repetition maximum a day, and detrained for 6 weeks. Progressive unilateral resistance training significantly (P < 0.
View Article and Find Full Text PDFPurpose: This study examined circulatory and metabolic changes in a working muscle during a crank cycle in a pedaling exercise with near-infrared spectroscopy (NIRS).
Methods: NIRS measurements sampled under stable metabolic and cadence conditions during incremental pedaling exercise were reordered according to the crank angles whose signals were obtained in eight male subjects.
Results: The reordered changes in muscle blood volume during a crank cycle demonstrated a pattern change that corresponded to changes in pedal force and electrical muscle activity for pedal thrust.