Heavy resistance training provides short-term benefits on bone formation in well-functioning older adults.

Objectives: Maintained bone health is critical for independent living when aging. Currently, multimodal exercise regimes including weight-bearing exercises with impact are prescribed as optimal for maintaining bone health, while there is less consensus on the effects of resistance training at different intensities upon bone. Here we examined whether bone health was positively influenced by 1 year of supervised resistance training at two different intensities.

Melatonin secretion across puberty: A systematic review and meta-analysis.

Background: Melatonin levels decrease with aging and substantially during puberty. Studies have presented distinct melatonin levels in patients with disorders related to their pubertal development compared to healthy controls. The discrepancy suggests that a decrease in melatonin concentrations seen during adolescence might be related to the physical, hormonal, and/or neuronal alterations that occur during the pubertal period.

Lower Bone Mineral Density in Female Elite Athletes With Menstrual Dysfunction From Mixed Sports.

Menstrual dysfunction (MD) in female athletes might be indicative of the syndrome of relative energy deficiency in sports (REDs), associated with, e.g., impaired bone health, an increased risk of injury, and decreased performance.

Hypophosphatemia is a frequent finding in infertile men and is associated with low motile sperm count.

Study Question: Is serum phosphate linked with semen quality and reproductive hormones in infertile men?

Summary Answer: Hypophosphatemia is a frequent finding in infertile men and is associated with lower number of motile sperm.

What Is Known Already: Phosphate is available in fluid from all segments of the male reproductive tract in concentrations manyfold higher than in serum. However, the role of phosphate in male fertility is largely unknown.

Bone mineral density and the risk of kidney disease in patients with type 1 diabetes.

Aim: To explore the association between bone disorder and the risk for progression of diabetic kidney disease (DKD) in persons with type 1 diabetes mellitus (T1DM).

Methods: In this prospective cohort study the association between bone mineral density (BMD), bone-derived factors (sclerostin, Dickkopf-1, and osteoprotegerin (OPG)), and four outcomes were investigated: 1) progression of albuminuria; 2) decline in estimated glomerular filtration rate (eGFR) ≥30 %; 3) kidney failure (KF); and 4) a composite kidney outcome consisting of at least one of the outcomes.

Results: In 318 participants (median follow-up time 5.