Historical trends of metals and metalloids into lake and coastal sediments of Halong Bay (Vietnam).

Halong Bay (northern Vietnam) is heavily affected by human activities. Metals and metalloids (e.g.

A new certified reference material IAEA-465 for radionuclides in Baltic Sea sediment.

Certified reference material (CRM) for natural (K,Pb,Po,Ra,Ra,Th,Th,Th,U,U, andU) and anthropogenic (Cs,Pu, andAm) radionuclides in marine sediment from the Baltic Sea (IAEA-465) has been developed. Information values are given for Pu,Pu andPu. Altogether 27 laboratories participated in this exercise.

Determining V̇O in competitive swimmers: Comparing the validity and reliability of cycling, arm cranking, ergometer swimming, and tethered swimming.

Objectives: This study aims to identify the optimal method for determining V̇O in competitive swimmers in terms of validity and test-retest reliability.

Design: Controlled experiment.

Methods: Twenty competitive swimmers performed four maximal incremental exercise tests: cycling, arm cranking, ergometer swimming, and tethered swimming.

Neurodevelopmental outcome at 5.5 years in Dutch preterm infants born at 24-26 weeks' gestational age: the EPI-DAF study.

Objective: After lowering the Dutch threshold for active treatment from 25 to 24 completed weeks' gestation, survival to discharge increased by 10% in extremely preterm live born infants. Now that this guideline has been implemented, an accurate description of neurodevelopmental outcome at school age is needed.

Design: Population-based cohort study.

Exploring running styles in the field through cadence and duty factor modulation.

According to the dual-axis model, running styles can be defined by cadence and duty factor, variables that have been associated with running performance, economy and injury risk. To guide runners in exploring different running styles, effective instructions to modulate cadence and duty factor are needed. Such instructions have been established for treadmill running, but not for overground running, during which speed can be varied.