Lung age and respiratory muscle strength in female volleyball players

Çelik, Zeliha; Güzel, Nevin Atalay; Yüksel, Fuat; Kafa, Nihan

doi:10.1590/1806-9282.20210639

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Revista da Associação Médica Brasileira

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Sumário

Original Article • Rev. Assoc. Med. Bras. 67 (10) • Oct 2021 • https://doi.org/10.1590/1806-9282.20210639 copy

Lung age and respiratory muscle strength in female volleyball players

Authorship SCIMAGO INSTITUTIONS RANKINGS

SUMMARY

OBJECTIVE:

Lung age estimation is a useful approach to determine pulmonary pathologies. In literature, no studies have evaluated and compared lung age in athletes with healthy volunteers. This study aims to compare lung age and respiratory muscle strength in female volleyball players and age-matched healthy volunteers.

METHODS:

A total of 18 female volleyball players (22.39±4.97 years) and 20 female healthy volunteers (24.85±3.33 years) were included. Pulmonary functions and respiratory muscle strength were assessed using a spirometer and mouth pressure device, respectively. The lung age was calculated using reference equations associated with gender, height, and forced expiratory volume in 1 second.

RESULTS:

Lung age was significantly lower, and forced expiratory volume in 1 L, forced vital capacity, and maximal inspiratory and expiratory pressure (cmH₂O, %) were higher in female volleyball players compared with healthy volunteers (p≤0.05).

CONCLUSION:

The lung age and respiratory muscle strength of female volleyball players were better than healthy volunteers. Regular training in female volleyball players may improve respiratory functions and lung age.

KEYWORDS:
Lung; Aging; Respiratory muscles; Athletes

	Volleyball players (n=18) X±SD/median (IQR)	Healthy volunteers (n=20) X±SD/median (IQR)	p-value
Age, years	22.39±4.97	24.85±3.33	0.079
Weight, kg	67.80 (61.45–71.68)	58.50 (53.25–65.00)	0.009 ^* * Mann-Whitney U test (p<0.05). Statistically significant p-value were written in bold.
Height, cm	176.50 (171.75–183.75)	165.00 (162.75–168.75)	<0.001 ^* * Mann-Whitney U test (p<0.05). Statistically significant p-value were written in bold.
Body mass index, kg/m²	21.52±1.64	22.01±2.91	0.539
Sports age, years	12.06±5.96

		Volleyball players (n=18) X±SD/median (IQR)	Healthy volunteers (n=20) X±SD/median (IQR)	Means difference 95%CI/U	p-value
Lung age (years)		27.93±14.02	43.01±7.23	-15.08 (-22.86– −7.29)	0.001 ^* * Student‧s t test (p<0.05).
Pulmonary function test (L)
	FEV1	4.28 (3.63–4.65)	3.15 (3.02–3.39)	26	<0.001 ^ Mann-Whitney U test (p<0.05). Statistically significant p-value were written in bold.
	FVC	4.37 (4.13–4.76)	3.72 (3.59–3.98)	82.5	0.004 ^ Mann-Whitney U test (p<0.05). Statistically significant p-value were written in bold.
Pulmonary function test (%)
	FEV1	97.50±8.02	94.81±5.97	2.69 (-1.93–7.31)	0.245
	FVC	98.22±8.75	97.00±7.66	1.23 (-4.17–6.63)	0.648
	FEV1/FVC	98.83±6.25	98.31±5.39	0.52 (-3.31–4.35)	0.784
Respiratory muscle strength
	MIP (cmH₂O)	89.00±19.44	74.15±23.05	14.85 (0.73–28.97)	0.040 ^* * Student‧s t test (p<0.05).
	MIP (%)	95.94±20.04	81.20±25.15	14.74 (-0.34–29.82)	0.055 ^* * Student‧s t test (p<0.05).
	MEP (cmH₂O)	110.11±21.30	90.50±23.14	19.61 (4.93–34.30)	0.010 ^* * Student‧s t test (p<0.05).
	MEP (%)	69.59±13.25	57.69±14.61	11.90 (2.69–21.12)	0.013 ^* * Student‧s t test (p<0.05).

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[1] *Corresponding author: zelihacelik@gazi.edu.tr, zelihacelik1@hotmail.com