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Bone mass and metabolic features were studied in 17 women distance runners. Eleven of the women had secondary amenorrhea for 1 to 7 years. Six women have maintained regular menses since menarche. Both groups were matched for aerobic capacity, body fat, exercise intensity, and age of menarche. Mineral density of lumbar spine in the amenorrheic runners was lower than that in the cyclic women and age-matched controls, but higher than that in runners with secondary amenorrhea who are less physically active. Mineral density of the radius was normal in both groups. Running-related fractures were more frequent in amenorrheic women. Metabolic assessment showed no differences between groups, except that serum triiodothyronine was lower in the amenorrheic group, perhaps reflecting low calorie intake. Intense exercise may reduce the impact of amenorrhea on bone mass; however, amenorrheic runners remain at high risk for exercise-related fractures.
R Marcus, and
C Cann, and
P Madvig, and
J Minkoff, and
M Goddard, and
M Bayer, and
M Martin, and
L Gaudiani, and
W Haskell, and
H Genant
November 1987,
International journal of sports medicine,
R Marcus, and
C Cann, and
P Madvig, and
J Minkoff, and
M Goddard, and
M Bayer, and
M Martin, and
L Gaudiani, and
W Haskell, and
H Genant
January 1987,
The American journal of sports medicine,
R Marcus, and
C Cann, and
P Madvig, and
J Minkoff, and
M Goddard, and
M Bayer, and
M Martin, and
L Gaudiani, and
W Haskell, and
H Genant
January 1977,
Annals of the New York Academy of Sciences,
R Marcus, and
C Cann, and
P Madvig, and
J Minkoff, and
M Goddard, and
M Bayer, and
M Martin, and
L Gaudiani, and
W Haskell, and
H Genant
March 2023,
Clinical journal of sport medicine : official journal of the Canadian Academy of Sport Medicine,
R Marcus, and
C Cann, and
P Madvig, and
J Minkoff, and
M Goddard, and
M Bayer, and
M Martin, and
L Gaudiani, and
W Haskell, and
H Genant
November 1987,
International journal of sports medicine,
R Marcus, and
C Cann, and
P Madvig, and
J Minkoff, and
M Goddard, and
M Bayer, and
M Martin, and
L Gaudiani, and
W Haskell, and
H Genant
November 1987,
International journal of sports medicine,
R Marcus, and
C Cann, and
P Madvig, and
J Minkoff, and
M Goddard, and
M Bayer, and
M Martin, and
L Gaudiani, and
W Haskell, and
H Genant
November 2001,
The International journal of eating disorders,
R Marcus, and
C Cann, and
P Madvig, and
J Minkoff, and
M Goddard, and
M Bayer, and
M Martin, and
L Gaudiani, and
W Haskell, and
H Genant
November 2016,
Journal of human lactation : official journal of International Lactation Consultant Association,
R Marcus, and
C Cann, and
P Madvig, and
J Minkoff, and
M Goddard, and
M Bayer, and
M Martin, and
L Gaudiani, and
W Haskell, and
H Genant
July 1979,
Obstetrics and gynecology,
R Marcus, and
C Cann, and
P Madvig, and
J Minkoff, and
M Goddard, and
M Bayer, and
M Martin, and
L Gaudiani, and
W Haskell, and
H Genant
November 1987,
International journal of sports medicine,
