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Biomedical subjects

Maïtel Botcazou

Publications and source records attributed to Maïtel Botcazou.

2 recordsLinked to original sources
PubMed2006

[Influence of menstrual cycle phase on catecholamine response to sprint exercise in the woman].

The aim of the present study was to verify the menstrual cycle phase influence on catecholamine concentrations (adrenaline (A) and noradrenaline (NA)), peak power (P(pic)), and peak lactatemia (La(pic)) in response to a 6 s sprint exercise on a cycle ergometer in eight untrained women (19.1 +/- 0.9 years, 167.7 +/- 5.4 cm, 59.5 +/- 4.7 kg). All women realize the 6 s sprint test in the morning, within the same menstrual cycle, in the follicular (PF) and the luteal phase (PL). Plasma catecholamine concentrations were determined at rest (A0 and NA0), immediately at the end of the sprint exercise (AEX and NAEX), and after 5 min of recovery (A5 and NA5). P(pic) and La(pic) were not significantly affected by the menstrual cycle phase. Catecholamine concentrations measured at rest, in response to the 6 s sprint test and after 5 min of recovery were not significantly different in PF and PL. Significant relationships were observed between AEX and La(pic) (r = 0.53, p < 0.01) and between AEX and P(pic) (r = 0.70, p < 0.01). In conclusion, this study demonstrated that the menstrual cycle phase did not alter performance, lactatemia, and sympatho-adrenergic responses to a short sprint exercise in untrained women.

Adult↗
PubMed2004

Do handball throws always exhibit a proximal-to-distal segmental sequence?

Previous studies on overarm throwing have described a proximal-to-distal segmental sequence. The proximal segments reached their maximal linear velocities before the distal ones. In handball, no study has demonstrated this sequence from the upper torso to the wrist, although a recent study did present a different organization. The aim of this study was to analyse the throwing arm segmental organization during handball throwing. We found that the maximal linear velocity of the shoulder occurred after the maximal linear velocity of the elbow. Moreover, the maximal angular velocity of the upper torso occurred later than that of the elbow. Hence, contrary to other disciplines, the rotation of the upper torso was not suddenly stopped just after the forward arm motion was initiated. These results may apply to handball in general or be specific to the population of handball players studied. It may be advisable in future studies to include international players.

Adolescent↗